Electro-optical catalytic reaction device and system

Abstract

The invention provides an electro-optical catalytic reaction device and system, and relates to the technical field of reactors, and the electro-optical catalytic reaction device comprises a first electrode, an insulation structure, a second electrode and a clamping plate. Wherein the insulating structure is annularly arranged and is arranged on the surface of one side of the first electrode along the thickness direction of the first electrode. The second electrode is arranged in a net shape, has light transmittance and is arranged on the side, away from the first electrode, of the insulation structure in the thickness direction. The first electrode and the second electrode are arranged at intervals through an insulation structure and are electrically insulated. The clamping plate has light transmittance and covers the surface, away from the first electrode, of the second electrode. The first electrode, the insulating structure and the clamping plate enclose a reaction cavity. Photocatalysis and electro-catalysis are simultaneously carried out in the reaction cavity by utilizing the light-transmitting clamping plate and the second electrode, the liquid holdup is increased by the annular insulating structure, the solution mixing is promoted by the net-shaped second electrode, the reaction efficiency can be effectively improved, meanwhile, the clamping plate and the second electrode are mutually independent, the material selection is flexible, and the cost is convenient to control.

Description

Technical Field

[0001] This application relates to the field of reactor technology, and in particular to an electro-photocatalytic reaction device and system. Background Technology

[0002] In related technologies, some electrocatalytic and photocatalytic reactions in electro-photocatalytic reactors are designed sequentially, meaning the two reactions are carried out in two separate modules in turn to take advantage of the mass transfer benefits of fluid chemistry and improve mass transfer efficiency. However, this design prevents the electrocatalytic and photocatalytic reactions from working synergistically in the same space and time, resulting in the inability to capture and utilize the unique, highly active intermediates that can only be produced when the two reactions act simultaneously. This limits the reaction efficiency of the electro-photocatalytic reactor. Furthermore, the limited fluid channel space in existing electro-photocatalytic reactors results in low liquid holdup and limited mixing of the internal reaction solution, leading to poor mass transfer performance and further affecting the reaction efficiency.

[0003] Furthermore, in related technologies, electrodes are usually made of materials that are transparent and conductive to provide the light conditions required for photocatalytic reactions, which limits the choice of materials and makes it difficult to control the preparation cost of electrophotocatalytic reactors.

[0004] Therefore, how to improve the reaction efficiency of electro-photocatalytic reactors while better controlling the manufacturing cost of these reactors is an urgent problem to be solved. Summary of the Invention

[0005] This application proposes a device and system for preparing a conductor structure, which aims to provide illumination conditions by using an independent, light-transmitting second electrode and a clamping plate, so that photocatalytic and electrocatalytic reactions can be carried out simultaneously in the reaction chamber. It also utilizes a ring-shaped insulating structure to increase the liquid holding capacity and uses a mesh-like second electrode to promote the mixing of the reaction solution. This allows for improved reaction efficiency of the electro-photocatalytic reaction device while making the material selection of the second electrode and clamping plate more flexible and easier to control the preparation cost of the electro-photocatalytic reaction device.

[0006] On one hand, an electro-photocatalytic reaction device is provided, comprising a first electrode, an insulating structure, a second electrode, and a clamping plate. The insulating structure is annularly arranged and disposed on one surface of the first electrode along its thickness direction. The second electrode is mesh-like and transparent. It is disposed on the side of the insulating structure away from the first electrode along its thickness direction. The first and second electrodes transmit different electrical signals. The first and second electrodes are spaced apart by the insulating structure and are electrically insulated. The clamping plate covers the surface of the second electrode away from the first electrode and is transparent. The first electrode, the insulating structure, and the clamping plate form a reaction chamber, with at least a portion of the second electrode located within the reaction chamber.

[0007] In this embodiment, by utilizing a light-transmitting clamp and a second electrode, light can smoothly enter the reaction chamber to provide illumination for the photocatalytic reaction. The first and second electrodes transmit different electrical signals to provide voltage for the electrocatalytic reaction, allowing the photocatalytic and electrocatalytic reactions to occur simultaneously within the reaction chamber. This effectively improves the reaction efficiency of the electrophotocatalytic reaction device. Furthermore, the presence of the annular insulating structure allows for a larger reaction chamber space formed by the annular structure, the first electrode, and the clamp, increasing the liquid holding capacity of the electrophotocatalytic reaction device. Simultaneously, the mesh-like second electrode can disturb the flow of the reaction solution entering the reaction chamber, promoting mixing and enhancing the mass transfer effect of the electrophotocatalytic reaction device, further improving its reaction efficiency.

[0008] Furthermore, the second electrode and the clamp are independent of each other, i.e., the coupling is low, which makes the material selection of the clamp and the second electrode more flexible. For example, the clamp can be made of a light-transmitting insulating material, and the second electrode can be made of a low-cost material, so as to effectively control the preparation cost of the electro-photocatalytic reaction device while providing the light conditions required for photocatalysis, and improve its economy.

[0009] In some embodiments, the clamp includes a main body and two conduits disposed on both sides of the main body and connected to the main body. The main body is located on the surface of the second electrode away from the first electrode, and the main body is hollow, with the two conduits communicating with the main body.

[0010] In some embodiments, the electro-photocatalytic reaction device further includes a back plate and a cover plate. The back plate has a slot, in which the first electrode, the insulating structure, and the second electrode are embedded. The cover plate is stacked on top of the back plate, and has an opening that faces the slot in the thickness direction. A clamping plate is sandwiched between the back plate and the cover plate. Both the back plate and the cover plate are made of insulating material.

[0011] In some embodiments, the clamp includes a main body and two conduits disposed on both sides of the main body and connected to the main body. A first groove is also provided on the back plate and / or the cover plate, and the portions of the back plate and the cover plate without slots, openings and the first groove abut against each other, with the two conduits embedded in the first groove.

[0012] In some embodiments, the back plate and / or cover plate are further provided with a second groove, the second groove being disposed around the boundary of the slot and / or opening. The electrophotocatalytic reaction device described above also includes a sealing ring. The sealing ring is embedded in the second groove.

[0013] In some embodiments, a through-hole is formed on the first electrode, located on the outer side of the annular insulating structure. At least a portion of the second electrode is disposed opposite to the through-hole in the thickness direction. The thickness of the overlapping portion of the two grid lines of the second electrode is greater than the thickness of the grid lines. Gaps are formed along the grid lines between the insulating structure and the second electrode, and between the clamping plate and the second electrode. The through-hole, the gaps, and the reaction chamber are interconnected.

[0014] In some embodiments, the shapes of the surfaces of the first electrode and the second electrode perpendicular to the thickness direction include circles, ellipses, rectangles, rhombuses, or other polygons other than rectangles and rhombuses.

[0015] In some embodiments, the first electrode has two through holes. The surface of the first electrode perpendicular to the thickness direction is elliptical in shape, and the two through holes are located at two ends of the first electrode along the longest diameter. Alternatively, the surface of the first electrode perpendicular to the thickness direction is rhomboid in shape, and the two through holes are located at two ends of the first electrode along the longest diagonal.

[0016] In some embodiments, the material of the clamp includes an insulating material.

[0017] In some embodiments, the material of the second electrode includes one or more of platinum-plated titanium, titanium, and stainless steel.

[0018] In some embodiments, the electro-photocatalytic reaction device further includes a first wire and a second wire. The first wire and the second wire are respectively disposed on opposite sides of the first electrode along a first direction and are electrically connected to the first electrode and the second electrode, respectively. The first direction is perpendicular to the thickness direction. The clamp includes a main body and two conduits connected to the main body, the two conduits being respectively disposed on opposite sides of the main body along a second direction. The second direction is perpendicular to both the first direction and the thickness direction.

[0019] On the other hand, an electro-photocatalytic reaction system is provided, which includes the electro-photocatalytic reaction device and controller as described in any of the above embodiments. The controller is connected to the electro-photocatalytic reaction device.

[0020] The technical effects of the aforementioned electro-photocatalytic reaction system can be found in the technical effects of the electro-photocatalytic reaction device in the first aspect, and will not be repeated here. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in some embodiments of this application will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not actual dimensions of the products or actual processes of the methods involved in the embodiments of this application.

[0022] Figure 1 An exploded view of an electro-photocatalytic reaction device provided in this application; Figure 2 for Figure 1 Side view of the cover plate; Figure 3 for Figure 1 Side view of the back panel; Figure 4 This is a schematic diagram showing the position of an insulating structure and a first electrode provided in an embodiment of this application; Figure 5 for Figure 1 A magnified view of the second electrode at point P; Figure 6 An exploded view of an electro-photocatalytic reaction device provided in this application; Figure 7 for Figure 6 A front view of the electro-photocatalytic reaction device shown; Figure 8 for Figure 6 A schematic diagram of the back of the electro-photocatalytic reaction device shown; Figure 9 This is a schematic diagram of an electro-photocatalytic reaction system provided in an embodiment of this application. Detailed Implementation

[0023] The technical solutions in some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application are within the scope of protection of this application.

[0024] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and encompassing, that is, "including, but not limited to".

[0025] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. For example, in describing some embodiments, the term "connection" may be used to indicate that two or more components have direct physical or electrical contact with each other.

[0027] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0028] In related technologies, some electrocatalytic and photocatalytic reactions in electro-photocatalytic reactors are designed sequentially, meaning the two reactions are carried out in two separate modules in turn to take advantage of the mass transfer benefits of fluid chemistry and improve mass transfer efficiency. However, this design prevents the electrocatalytic and photocatalytic reactions from working synergistically in the same space and time, resulting in the inability to capture and utilize the unique, highly active intermediates that can only be produced when the two reactions act simultaneously. This limits the reaction efficiency of the electro-photocatalytic reactor. Furthermore, the limited fluid channel space in existing electro-photocatalytic reactors results in low liquid holdup and limited mixing of the internal reaction solution, leading to poor mass transfer performance and further affecting the reaction efficiency.

[0029] To address the aforementioned problems, embodiments of this application provide an electro-photocatalytic reaction device. Figure 1 An exploded view of an electro-photocatalytic reaction device provided in an embodiment of this application.

[0030] See Figure 1 The aforementioned electro-photocatalytic reaction device 100 includes a first electrode 1, an insulating structure 2, a second electrode 3, and a clamping plate 4.

[0031] The first electrode 1 is a working electrode of the electro-photocatalytic reaction device 100, which is used to provide electrons for the electrocatalytic reaction and participate in the reaction.

[0032] The aforementioned electrocatalytic reaction refers to the electrochemical process in which the activation energy of a reaction is reduced by a catalyst under the action of an electric field, thereby accelerating chemical reactions such as reduction and oxidation.

[0033] For example, the material of the first electrode 1 may include graphite. Graphite electrodes have good electrical conductivity, high temperature resistance, and chemical corrosion resistance, which can reduce the risk of the first electrode 1 being damaged (e.g., corroded) in the electro-photocatalytic reaction. In addition, graphite electrodes have low cost and are easy to process, which can effectively reduce the preparation cost and difficulty of the electro-photocatalytic reaction device 100.

[0034] Alternatively, by way of example, the material of the first electrode 1 can be a material with good conductivity, high temperature resistance, chemical corrosion resistance, etc., such as carbon felt, and this application does not limit it.

[0035] This ensures that the first electrode 1 will not be damaged even in electro-photocatalytic reaction environments such as strong acidity, strong alkalinity, and high temperature, thus maintaining its catalytic activity and ensuring the continuous and efficient operation of the electro-photocatalytic reaction device 100. It also extends the service life of the first electrode 1, thereby improving the service life of the electro-photocatalytic reaction device 100. In addition, the first electrode 1, with its excellent conductivity, can quickly introduce electrons into the electro-photocatalytic reaction, reducing energy loss during electron transport and improving the efficiency of the electro-photocatalytic reaction.

[0036] The electro-photocatalytic process mentioned here refers to a homogeneous-heterogeneous composite catalytic process that, under the synergistic drive of light irradiation and applied electrode potential, utilizes the photosensitivity of homogeneous photocatalysts and the electron donation and acceptance characteristics of electrodes to achieve continuous regeneration of photocatalysts through electrochemical means, thereby replacing chemical sacrificial agents and accelerating target redox reactions.

[0037] For example, the thickness of the first electrode 1, i.e. its dimension in the Z direction, can be designed according to the specific electro-photocatalytic reaction requirements of the electro-photocatalytic reaction device 100. For example, in order to balance the conductivity and mechanical stability of the electrode, a graphite electrode with a thickness of 2 mm can be used. This application does not limit this.

[0038] See Figure 1 The aforementioned insulating structure 2 can be a ring structure so that the area enclosed by the insulating structure 2 can be fully utilized, that is, the area inside the ring can accommodate more reaction solution and allow it to flow continuously.

[0039] The reaction solution here can flow continuously within the electro-photocatalytic reaction device 100 at a set flow rate.

[0040] See Figure 1 The insulating structure 2 can be disposed on one side surface of the first electrode 1 along the thickness direction of the first electrode 1, so as to subsequently combine the first electrode 1 and the clamping plate 4 to form a reaction chamber, thereby providing reaction space for the reaction solution to carry out photocatalytic and electrocatalytic reactions, for example, Figure 1In the middle, along the thickness direction Z, the insulating structure 2 can be disposed on the left side surface of the first electrode 1. For example, the material of the above-mentioned insulating structure 2 may include any one of polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and polypropylene (PP).

[0041] Among them, polyetheretherketone and polytetrafluoroethylene have similar corrosion resistance and high temperature resistance, but polyetheretherketone has higher mechanical strength, that is, it has better mechanical stability under high pressure and high temperature, making it suitable for extreme electro-photocatalytic reaction environments.

[0042] Polypropylene is corrosion resistant, but its high temperature resistance is poor. It is suitable for medium and low temperature, mild electro-photocatalytic reaction environments. In addition, polypropylene is relatively inexpensive. Using this material can effectively reduce the preparation cost and improve the economy of the electro-photocatalytic reaction device 100.

[0043] For example, the thickness of the above-mentioned insulating structure 2 can be 0.1mm to 1mm, so as to ensure that the reaction cavity space enclosed by it, the first electrode 1 and the clamping plate 4 is large, thereby increasing the liquid holding capacity of the electro-photocatalytic reaction device 100, while shortening the distance between the first electrode 1 and the second electrode 3, so as to reduce the ohmic drop and light flux attenuation effect, thereby effectively improving the chemical reaction rate.

[0044] See Figure 1 The second electrode 3 can be arranged in a mesh pattern, that is, it can be a mesh structure composed of multiple meshes.

[0045] The mesh allows light to pass through, making the second electrode 2 translucent, thus effectively avoiding the light-blocking effect of traditional plate-shaped electrode plates.

[0046] See Figure 1 Along the thickness direction Z, the second electrode 3 can be disposed on the side of the insulating structure 2 away from the first electrode 1, for example, Figure 1 In the middle, the left side of the insulating structure 2 is sandwiched together with the first electrode 1 so that the inner region of the insulating structure 2 can serve as the reaction zone for the electro-photocatalytic reaction, accommodating more reaction solution and thus improving the reaction efficiency.

[0047] See Figure 1 Along the thickness direction Z, the surface of the second electrode 3 near the insulating structure 2 is also a reaction zone for electro-photocatalytic reaction. Since the second electrode 3 is arranged in a mesh, the reaction solution can be convection. That is, when the reaction solution flows through the mesh wall, it will be divided, which can promote the mixing of the reaction solution and improve the electro-photocatalytic reaction effect.

[0048] Meanwhile, the mesh-like second electrode 3 also facilitates the escape of gases (such as hydrogen) formed in the electro-photocatalytic reaction. That is, during the electro-photocatalytic reaction, bubbles can gradually grow from small to large within the mesh of the second electrode 3. When the size of the bubbles exceeds the critical size of the mesh pores, they will detach from the mesh surface and be discharged with the flow of the reaction solution. In this way, the surface activity of the second electrode 3 is maintained and the catalytic efficiency is improved, while the formation of dead zones due to gas retention affecting the flow rate distribution of the reaction solution is avoided, thereby improving the mass transfer efficiency of the electro-photocatalytic reaction device 100.

[0049] When the second electrode 3 is arranged in a mesh, its specific surface area is large, which can provide more active sites for electrocatalytic reaction, thereby improving reaction efficiency.

[0050] The first electrode 1 and the second electrode 3 transmit different electrical signals, for example, they can be used as anode and cathode respectively. Under the drive of an external power source, a potential difference is established, driving specific electrochemical reactions to occur on the electrode surface, so as to continuously regenerate the homogeneous photocatalyst consumed in the photocatalysis, thereby ensuring that the entire electrophotocatalytic reaction runs efficiently and continuously in the reaction chamber.

[0051] For example, the first electrode 1 can be positively charged, and the second electrode 3 can be negatively charged. The first electrode 1 acts as an electron acceptor, accepting electrons from specific species in the solution by applying a sufficient positive potential, causing them to undergo oxidation reactions, such as regenerating the photocatalyst. The second electrode 3 acts as an electron donor, actively donating electrons to specific species in the solution, such as hydrogen ions, by applying a sufficient negative potential, causing them to undergo reduction reactions to generate hydrogen gas. This electrochemical electron donation and acceptance design replaces the traditional chemical sacrificial agent, thereby maintaining the continuity of the entire electrophotocatalytic reaction.

[0052] See Figure 1 The first electrode 1 and the second electrode 3 can be spaced apart and electrically insulated by the insulating structure 2 between them. This ensures that the reaction area enclosed by the first electrode 1, the insulating structure 2 and the second electrode 3 is an undivided electrolytic cell. Furthermore, since the undivided electrolytic cell design is relatively simple and easy to assemble, and the diaphragm is eliminated, the undivided electrolytic cell can have a low internal resistance, which is beneficial to reducing the driving voltage. At the same time, it can also reduce the overall preparation difficulty and preparation cost of the electrophotocatalytic reaction device 100.

[0053] For example, the insulating structure 2 can be replaced with a diaphragm (e.g., an ion exchange membrane) to divide the entire electrolytic cell into two independent half-chambers, allowing specific ions to conduct current while ensuring that the oxidation reaction at the anode and the reduction reaction at the cathode are physically separated, thereby effectively suppressing reverse reactions (or cross-reactions) between products, and thus improving the Faraday efficiency and product selectivity of the electrophotocatalytic reaction.

[0054] The aforementioned clamp 4 is light-transmitting, allowing light to pass through the clamp 4 and enter other components in order to provide illumination conditions for the electro-photocatalytic reaction.

[0055] See Figure 1 The aforementioned clamp 4 can cover the surface of the second electrode 3 away from the first electrode 1, so that light can pass through the clamp 4 and enter the second electrode 3, providing illumination conditions for the electro-photocatalytic reaction, thereby ensuring that photocatalysis and electrocatalysis of the electro-photocatalytic reaction device 100 can be carried out simultaneously.

[0056] For example, the thickness of the clamp 4 can be 4mm, so that the effects of refraction, reflection and other phenomena that occur when light passes through the clamp 4 on the light transmission path and intensity are minimal and can be approximately ignored. At the same time, it can also make the electro-photocatalytic reaction device 100 thinner and more compact.

[0057] See Figure 1 The combination of the first electrode 1, the insulating structure 2, and the clamping plate 4 can form a reaction chamber, i.e. a fluid channel, in the electro-photocatalytic reaction device 100, so as to provide an independent reaction space for the reaction solution to carry out photocatalytic and electrocatalytic reactions simultaneously under the conditions of light and electric field.

[0058] At least a portion of the second electrode 3 can be located within the reaction chamber formed by the first electrode 1, the insulating structure 2, and the clamping plate 4. This provides voltage for the electrocatalytic reaction, allowing the photocatalytic and electrocatalytic reactions to proceed simultaneously. Furthermore, the mesh-like arrangement of the second electrode 3 promotes the mixing of the reaction solution and the discharge of gaseous products, thereby improving the efficiency of the electro-photocatalytic reaction.

[0059] It is understood that in this embodiment, by utilizing the light-transmitting clamp 4 and the second electrode 3, light can smoothly enter the reaction chamber to provide illumination for the photocatalytic reaction, and the first electrode 1 and the second electrode 3 can transmit different electrical signals to provide voltage for the electrocatalytic reaction. This allows the photocatalytic and electrocatalytic reactions to occur simultaneously within the reaction chamber, effectively improving the reaction efficiency of the electrophotocatalytic reaction device 100. Furthermore, the presence of the annular insulating structure 2 allows for a larger reaction chamber space formed by it, the first electrode 1, and the clamp 4, increasing the liquid holding capacity of the electrophotocatalytic reaction device 100. Simultaneously, the mesh-like second electrode 3 can disturb the flow of the reaction solution entering the reaction chamber, promoting mixing and enhancing the mass transfer effect of the electrophotocatalytic reaction device 100, further improving its reaction efficiency. Furthermore, the second electrode 3 and the clamping plate 4 are independent of each other, i.e., the coupling is low, which makes the material selection of the clamping plate 4 and the second electrode 3 more flexible. For example, the clamping plate 4 can be made of a light-transmitting insulating material, and the second electrode 3 can be made of a low-cost material, so as to effectively control the preparation cost of the electro-photocatalytic reaction device 100 while providing the light conditions required for photocatalysis, and improve its economy.

[0060] In some embodiments, see Figure 1 The clamp 4 in the above embodiment includes a main body 41 and two conduits 42.

[0061] Two conduits 42 are respectively disposed on both sides of the main body 41 and connected to the main body 41.

[0062] For example, see Figure 1 The two conduits 42 can be arranged on both sides of the main body 41 along the X direction, or the two conduits 42 can be arranged on both sides of the main body 41 along the Y direction, to meet the needs of different electro-photocatalytic reaction devices 100. This application does not limit this.

[0063] See Figure 1 The ends of the two conduits 42 that are furthest from the main body 41 can be the heat exchange medium inlet and the heat exchange medium outlet.

[0064] Among them, heat exchange medium refers to the fluid or substance that stores or transfers heat during the heat exchange process, and realizes the energy transfer between the heat source and the cold source by absorbing or releasing heat.

[0065] The main body 41 can be hollow and communicate with two conduits 42 so that the heat exchange medium can enter from one conduit 42, flow through the main body 41, and then flow out from the other conduit 42, thereby achieving temperature control of the electro-photocatalytic reaction and ensuring that the photocatalytic reaction and the electrocatalytic reaction can proceed normally at the set temperature.

[0066] The above-mentioned set temperature can be set according to the properties of the reaction solution, the target product, and the reaction rate of the electro-photocatalytic reaction.

[0067] See Figure 1 The main body 41 of the clamping plate 4 can be located on the surface of the second electrode 3 away from the first electrode 1. In this way, the heat exchange medium flowing in the main body 41 can transfer heat in real time and uniformly, thereby achieving the purpose of controlling the temperature of the electro-photocatalytic reaction in real time and uniformly, so that the photocatalytic reaction and the electrocatalytic reaction can always proceed stably at the set reaction temperature.

[0068] For example, the heat exchange medium can be water, oil, or other substances, so as to store or transfer heat through it, thereby controlling the reaction temperature of the electro-photocatalytic reaction while reducing the cost of the electro-photocatalytic reaction device 100 and improving its economic efficiency, which in turn helps to enhance the competitiveness of the electro-photocatalytic reaction device 100.

[0069] In this way, the transparent clamp 4 is hollow, which can provide light conditions for the electro-photocatalytic reaction by utilizing the light transmission of the clamp 4, and can also control the reaction temperature of the electro-photocatalytic reaction in real time by utilizing the heat exchange medium flowing inside it. Thus, the clamp 4 can serve multiple purposes, thereby making the structure of the electro-photocatalytic reaction device 100 more compact and improving its integration.

[0070] In some embodiments, the material of the clamp 4 in the above embodiments may include an insulating material.

[0071] For example, the material of the clamping plate 4 may include insulating materials such as quartz or borosilicate glass. When the material of the clamping plate 4 is quartz, because quartz has good light transmittance, it exhibits good light transmittance in the ultraviolet, visible, and even infrared bands, thereby ensuring that light of various bands can pass through the clamping plate 4 constructed of this material, providing sufficient illumination for the electro-photocatalytic reaction. In addition, quartz has an extremely high melting point and excellent chemical stability, and can withstand high temperatures and corrosion from most acid and alkali solutions, thereby ensuring that the clamping plate 4 remains stable and durable under severe catalytic reaction conditions such as high temperatures and corrosive media, thus improving the service life of the electro-photocatalytic reaction device 100.

[0072] The chemical resistance and high temperature resistance of the aforementioned borosilicate glass are slightly inferior to those of quartz, but its cost is lower. When the photocatalyst for electro-photocatalytic reaction only requires visible light and does not have high requirements for ultraviolet light, borosilicate glass can be used to construct the sandwich panel 4.

[0073] Compared to existing electro-photocatalytic reactors that require materials that are both light-transmitting and conductive to provide the necessary illumination for photocatalysis, this method uses only a light-transmitting insulating material to prepare the clamp 4 and combines it with the mesh-like second electrode 3 to provide the illumination conditions for the photocatalytic reaction. This allows for more flexible selection of materials for the clamp 4 and the second electrode 3. For example, lower-cost insulating and conductive materials can be selected to prepare the clamp 4 and the second electrode 3, respectively. This ensures that illumination is provided for the electro-photocatalytic reaction while reducing the manufacturing cost of the electro-photocatalytic reactor 100, thereby improving the economic efficiency of the electro-photocatalytic reactor 100.

[0074] Figure 2 for Figure 1 Side view of the cover plate in the middle. Figure 3 for Figure 1 Side view of the back panel.

[0075] In some embodiments, see Figures 1-3 The aforementioned electro-photocatalytic reaction device 100 also includes a back plate 5 and a cover plate 6.

[0076] The back plate 5 has a slot 51 so that the first electrode 1, the insulating structure 2 and the second electrode 3 can be embedded in the slot 51 to fix these components.

[0077] See Figure 1 Along the thickness direction Z, the cover plate 6 can be stacked with the back plate 5 so that the two can be combined to fix various components set between them.

[0078] See Figure 1 and Figure 2 The cover plate 6 has an opening 61, and along the thickness direction Z, the opening 61 is directly opposite the slot 51 of the back plate 5. That is, along the thickness direction Z, the opening 61 is located to the left of the slot 51, so as to ensure that the light can completely illuminate the clamping plate 4 in the slot 51 through the opening 61, thereby providing light for the photocatalytic reaction.

[0079] For example, see Figures 1-3 The shape and size of the groove 51 and the opening 61 can be the same, or the size of the opening 61 can be larger than the size of the groove 51. This ensures that the light passing through the opening 61 can illuminate the entire area of ​​the groove 51, so that the reaction solution in each area of ​​the reaction chamber can carry out photocatalytic reaction under light illumination.

[0080] The materials of the back plate 5 and the cover plate 6 can both include insulating materials to wrap the first electrode 1 and the second electrode 3, thereby avoiding direct contact between the electrodes and other conductive components or the external environment, which could lead to leakage or short circuits and improve the safety of the electro-photocatalytic reaction device 100.

[0081] For example, the material of the back plate 5 may include any one of polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and polypropylene (PP), and the material of the cover plate 6 may also be any one of polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and polypropylene (PP). Since these materials are also corrosion resistant, the back plate 5 and cover plate 6 made of these materials can remain stable in high acid and high alkali environments, thereby improving the safety and service life of the electro-photocatalytic reaction device 100.

[0082] See Figure 1 In the above embodiment, the clamping plate 4 can be disposed between the back plate 5 and the cover plate 6, that is, it can be clamped and fixed by the back plate 5 and the cover plate 6 to ensure that the clamping plate 4 can form a reaction chamber with the first electrode 1 and the insulating structure 2, so that the electro-photocatalytic reaction can be carried out.

[0083] For example, see Figure 1 and Figure 2 The main body 41 of the aforementioned clamping plate 4 can be embedded in the opening 61 of the cover plate 6 to ensure that light passes through the opening 61 to provide illumination for the photocatalytic reaction, while making the structure of the electrophotocatalytic reaction device 100 more compact.

[0084] For example, the back plate 5 is provided with a plurality of first fastening holes 55, and the cover plate 6 is also provided with a plurality of second fastening holes 64. Along the thickness direction Z, the first fastening holes 55 and the second fastening holes 64 are arranged opposite each other so that fasteners (such as nuts and screws) can pass through the first fastening holes 55 and the second fastening holes 64 respectively. By tightening or fixing the fasteners, the back plate 5 and the cover plate 6 can be connected together, thereby using the back plate 5 and the cover plate 6 to fix the various components between them, so as to effectively prevent these components from shifting or falling off due to the shaking of the electro-photocatalytic reaction device 100, which would affect the life of the electro-photocatalytic reaction device 100.

[0085] In this way, by using the insulating back plate 5 and cover plate 6, the first electrode 1, the insulating structure 2, the second electrode 3 and the clamping plate 4 can be fixed, thereby reducing the risk of displacement or detachment of the first electrode 1, the insulating structure 2, the second electrode 3 and the clamping plate 4 due to shaking of the electro-photocatalytic reaction device 100. It can also prevent the electrodes from directly contacting external conductive components or the external environment, which could lead to leakage or short circuits, thereby improving the safety and service life of the electro-photocatalytic reaction device 100.

[0086] In some embodiments, see Figures 1-3The back plate 5 and / or cover plate 6 may also have a first groove, and the parts of the back plate 5 and cover plate 6 that do not have a groove 51, an opening 61 and a first groove can abut against each other, so as to protect the internal components while reducing the size of the electro-photocatalytic reaction device 100 in the thickness direction Z.

[0087] The first groove here is used to accommodate the two conduits 42 of the clamp 4, that is, the two conduits 42 can be embedded in the first groove.

[0088] For example, see Figure 1 and Figure 2 Two first grooves 62 can be opened only on the side of the cover plate 6 near the back plate 5 to accommodate two conduits 42 respectively. In this case, the part of the cover plate 6 other than the opening 61 and the first groove 62 abuts against the part of the back plate 5 other than the slot 51.

[0089] For example, the first groove can be made only on one side of the back plate 5, in which case the first groove and the slot 51 are located on the same side of the back plate 5.

[0090] Alternatively, for example, a first groove is formed on the opposite side of the back plate 5 and the cover plate 6, and the portion of the conduit 42 near the back plate 5 is embedded in the first groove formed in the back plate 5, while the remaining portion of the conduit 42 is embedded in the first groove formed in the cover plate 6. In this case, the portion of the back plate 5 other than the slot 51 and the first groove abuts against the portion of the cover plate 6 other than the opening 61 and the first groove.

[0091] For example, along the thickness direction Z, the size of the first groove opened only on the side of the cover plate 6 near the back plate 5, or the size of the first groove opened only on the side of the back plate 5 near the cover plate 6, can be larger than the size of the first groove opened simultaneously on both the side of the cover plate 6 near the back plate 5 and the side of the cover plate 6 near the back plate 5.

[0092] For example, see Figure 1 and Figure 3 Two first interface holes 53 can be provided on the back plate 5 so that the reaction solution can be injected through one of the first interface holes 53, and the unreacted reaction solution, reaction products and other substances can be discharged through the other first interface hole 53.

[0093] In this way, a first groove is also provided on the back plate 5 and / or the cover plate 6 so that the two conduits 42 of the clamping plate 4 can be embedded, and the parts of the back plate 5 and the cover plate 6 without grooves 51, openings 61 and the first groove can abut against each other. This can further fix the clamping plate 4 to ensure that a reaction chamber can be formed, and can also make the structure of the electro-photocatalytic reaction device 100 more compact and improve its integration.

[0094] In some embodiments, see Figures 1-3 In the above embodiments, the back plate 5 and / or cover plate 6 may also have a second groove.

[0095] The second groove may be provided around the boundary of the slot 51 of the back plate 5 and / or the opening 61 of the cover plate 6 in order to embed other components.

[0096] See Figure 1 The electro-photocatalytic reaction device 100 may also include a sealing ring 7, which may be embedded in the second groove.

[0097] The sealing ring 7 here is used to seal the components on both sides, so that the part where the back plate 5 and the cover plate 6 abut against each other can form a sealed, independent cavity. This prevents leakage of the reaction solution or the entry of external gases, moisture, or other substances, which could affect the reaction efficiency, mass transfer efficiency, or heat transfer efficiency of the electro-photocatalytic reaction. In addition, the sealing ring 7 also acts as a buffer, that is, it can also protect the components on both sides.

[0098] For example, the material of the sealing ring 7 may include ethylene propylene diene monomer (EPDM), polytetrafluoroethylene (PTFE), or other materials that can be used for sealing, and this application does not limit this.

[0099] The aforementioned EPDM rubber is a high-performance synthetic rubber with good chemical resistance and electrical insulation. It can also permanently deform after compression, resulting in a good seal ring 7 made from this material. Compared with EPDM rubber, PTFE has better chemical resistance, resisting almost all chemicals. The seal ring 7 made from this material is suitable for applications requiring extremely high chemical resistance. However, PTFE has poor elasticity, so when using the seal ring 7 made from this material to seal components, a more precise compression design is required to ensure its sealing performance.

[0100] For example, see Figures 1-3 A second slot 52 and a second slot 63 can be opened on opposite sides of the back plate 5 and the cover plate 6, respectively, to embed two sealing rings 7. The sealing ring 7 embedded in the second slot 52 can be used for sealing between the clamping plate 4 and the back plate 5, and the sealing ring 7 embedded in the second slot 63 can be used for sealing between the clamping plate 4 and the cover plate 6, so as to ensure that the part of the back plate 5 and the cover plate 6 that abuts against each other can form a sealed and independent cavity, while avoiding the clamping plate 4 from being crushed, so as to better protect the clamping plate 4.

[0101] Figure 4 This is a schematic diagram showing the position of an insulating structure and a first electrode, provided in an embodiment of this application.

[0102] In some embodiments, see Figure 1 and Figure 4A through hole 11 is provided on the first electrode 1.

[0103] The through hole 11 here can be an inlet or outlet for the reaction solution, so as to allow the reaction solution to enter or exit.

[0104] For example, two through holes 11 can be formed on the first electrode 1, one as an inlet for injecting the reaction solution and the other as an outlet for discharging reaction products, unreacted reaction solution, and other substances.

[0105] For example, Figure 1 Along direction X, the through hole 11 on the upper side of the first electrode 1 can be the inlet of the reaction solution, and the through hole 11 on the lower side can be the outlet of the reaction solution.

[0106] For example, see Figure 1 Along the thickness direction Z, the two through holes 11 on the first electrode 1 can be directly opposite to the two first interface holes 53 on the back plate 5, so that the reaction solution injected through the first interface hole 53 can directly enter the corresponding through hole 11, and the unreacted reaction solution, reaction products, etc. discharged from the through hole 11 can directly flow into another first interface hole 53, thereby being discharged from the electro-photocatalytic reaction device 100.

[0107] See Figure 1 and Figure 4 Along the thickness direction X, the aforementioned through hole 11 can be located outside the ring of the annular insulating structure 2, that is, along the thickness direction Z, the orthogonal projection of the insulating structure 2 on the first electrode 1 does not cover the through hole 11, so as to ensure that the reaction solution injected through the through hole 11 can directly reach the second electrode 3, thereby entering the reaction cavity surrounded by the first electrode 1, the insulating structure 2 and the clamping plate 4 to carry out the electro-photocatalytic reaction, while avoiding the insulating structure 2 from blocking part of the reaction solution and reaction products after the electro-photocatalytic reaction from being discharged through the through hole 11.

[0108] For example, Figure 4 In the middle, along the direction X, the two through holes 11 of the first electrode 1 are located on the upper and lower sides of the outer ring of the insulating structure 2, respectively.

[0109] See Figure 1 Along the thickness direction Z, a portion of the second electrode 3 can be positioned directly opposite the through hole 11, that is, along the thickness direction Z, a portion of the second electrode 3 is located directly to the left of the through hole 11, for example... Figure 1In the process, the upper and lower portions of the second electrode 3 are located directly to the left of the two through holes 11, so that the reaction solution injected through the through holes 11 can undergo electro-photocatalytic reaction in the reaction chamber through this portion of the second electrode 3, and the products after the electro-photocatalytic reaction and the remaining reaction solution can be discharged through the portion of the second electrode 3 that is directly opposite to the through holes 11, thereby ensuring that the electro-photocatalytic reaction continues.

[0110] For example, through holes 11 can also be made on other components. In this case, the reaction solution can still be transported to the reaction cavity formed by the first electrode 1, the insulating structure 2 and the clamping plate 4 to carry out electro-photocatalytic reaction. For example, through holes 11 can be made on the side of the insulating structure 2, the side of the back plate 5 and other positions along the thickness direction Z. This application does not limit this.

[0111] Figure 5 for Figure 1 A magnified view of the second electrode at point P.

[0112] See Figure 5 The thickness of the overlapping portion of the two grid lines of the second electrode 3 is greater than the thickness of the grid lines. Taking grid lines 31 and 32 as an example, the thickness of the overlapping portion of grid lines 31 and 32 (the part in the gray box in the figure) is greater than the thickness of grid lines 31 and 32. In this way, there can be gaps along the grid lines between the second electrode 3 and the insulating structure 2, and between the second electrode 3 and the clamping plate 4. That is, there are gaps between the second electrode 3 and the insulating structure 2, and between the second electrode 3 and the clamping plate 4 along the thickness direction Z.

[0113] The gap here can communicate with the through hole 11 and the reaction chamber, so that after the reaction solution injected through one through hole 11 (reaction solution inlet) reaches the second electrode 3, it can enter the reaction chamber through the gap. Under the conditions of light and voltage, photocatalytic reaction and electrocatalytic reaction can be carried out simultaneously. The reaction products and the unreacted reaction solution can also flow out of the reaction chamber through the gap and be discharged through another through hole 11 (reaction solution outlet), thereby realizing the continuous progress of electro-photocatalytic reaction.

[0114] In some embodiments, see Figure 1 The surface shape of the first electrode 1 and the second electrode 3 in the above embodiments, perpendicular to the thickness direction Z, may include a circle, an ellipse, a rectangle, a rhombus, or other polygons other than rectangles and rhombuses, so as to enrich the structure of the electro-photocatalytic reaction device 100 and enable it to meet the needs of different applications.

[0115] For example, the surface shape of the first electrode 1 and the second electrode 3 perpendicular to the thickness direction Z may include a geometric shape that is generally circular, elliptical, rectangular, or rhomboid. For example, a rectangle or ellipse with small notches, or a rectangle or ellipse with slightly protruding edges, or a rectangle or ellipse with slight deformation, such as a rectangle-like shape with four curved lines.

[0116] For example, the surface shape of the insulating structure 2 perpendicular to the thickness direction Z may include a circular ring, an elliptical ring, a rectangular ring, and a rhomboid ring with the two ends removed, etc., to correspond to the surface shape of the first electrode 1 and the second electrode 3 perpendicular to the thickness direction Z, so that the reaction cavity surrounded by the first electrode 1, the insulating structure 2 and the clamping plate 4 is large enough, thereby increasing the liquid holding capacity of the electro-photocatalytic reaction device 100 and enhancing its mass transfer effect.

[0117] In some embodiments, see Figure 1 Two through holes 11 are provided on the first electrode 1. When the surface of the first electrode 1 perpendicular to the thickness direction Z is elliptical, the two through holes 11 can be respectively located at the two ends of the first electrode 1 along the longest diameter of the first electrode 1.

[0118] Alternatively, when the surface of the first electrode 1 perpendicular to the thickness direction Z is rhomboid, the two through holes 11 can be disposed at the two ends of the first electrode 1 along the longest diagonal of the first electrode 1. For example, along the direction X, the two through holes 11 can be disposed at the upper end and the lower end of the first electrode 1, respectively.

[0119] In this way, when the reaction solution injected through the through-hole 11 (reaction solution inlet) flows in the reaction chamber, its flow path will first flow from the tip of one end to the expansion section (for example, the apex of the rhombus without the through-hole 11), then from the expansion section to the tip of the other end, and finally flow out of the reaction chamber. This flow path design can make the reaction solution flow more smoothly, thereby effectively reducing the dead zone area of ​​the reaction, and thus improving the utilization rate of the reaction solution and enhancing the mass transfer effect.

[0120] In some embodiments, the material of the second electrode 3 in the above embodiments may include one or more of platinum-plated titanium, titanium, and stainless steel to adapt to different electro-photocatalytic reaction requirements, thereby improving the applicability of the electro-photocatalytic reaction device 100.

[0121] For example, the material of the second electrode 3 can be platinum-plated titanium. Since platinum-plated titanium integrates the advantages of platinum and titanium, it has excellent electrocatalytic activity, excellent corrosion resistance and durability, and high conductivity. Thus, on the one hand, the second electrode 3 can provide more active sites in the electro-photocatalytic reaction and can quickly receive and consume electrons from the external circuit, thereby accelerating the reduction reaction and improving the reaction efficiency. On the other hand, the second electrode 3 is not easily corroded in the electro-photocatalytic reaction, resulting in a long service life, thereby extending the service life of the electro-photocatalytic reaction device 100. In addition, compared with platinum, platinum-plated titanium has a lower cost, which can reduce the manufacturing cost of the electro-photocatalytic reaction device 100 and improve its economy.

[0122] Figure 6 An exploded view of another electro-photocatalytic reaction device provided in this application. Figure 7 for Figure 6 The diagram shown is a front view of the electro-photocatalytic reaction device. Figure 8 for Figure 6 A schematic diagram of the back of the electro-photocatalytic reaction device shown.

[0123] In some embodiments, see Figure 1 , Figure 6 , Figure 7 and Figure 8 The electro-photocatalytic reaction device 100 in the above embodiments also includes a first wire w1 and a second wire w2.

[0124] The first wire w1 and the second wire w2 can be arranged on both sides of the first electrode 1 along the first direction X and are electrically connected to the first electrode 1 and the second electrode 3 respectively, so as to apply voltage to the first electrode 1 and the second electrode 3, thereby enabling the first electrode 1 and the second electrode 3 to transmit different electrical signals, and thus provide voltage conditions for the electrocatalytic reaction.

[0125] The first direction X is perpendicular to the thickness direction Z.

[0126] See Figure 1 , Figure 6 , Figure 7 and Figure 8 The back plate 5 of the electro-photocatalytic reaction device 100 also includes two wire through holes 54, and these two wire through holes 54 can be arranged on both sides of the back plate 5 along the first direction X, so that the first wire w1 and the second wire w2 can be electrically connected to the first electrode 1 and the second electrode 3 respectively through the two wire through holes 54.

[0127] See Figure 1 , Figure 6 , Figure 7 and Figure 8The clamping plate 4 of the electro-photocatalytic reaction device 100 includes a main body 41 and two conduits 42. The two conduits 42 can be arranged on both sides of the main body 41 along the second direction Y and connected to the main body 41, so that the heat exchange medium can flow in from one conduit 42, pass through the main body 41, and then flow out from the other conduit 42. This allows the clamping plate 4 to control the reaction temperature of the electro-photocatalytic reaction in real time and uniformly, thereby ensuring that the electro-photocatalytic reaction always proceeds stably under the set temperature conditions. In addition, since the two wire through holes 54 are arranged on both sides of the back plate 5 along the first direction X, and the two conduits 42 are arranged on both sides of the main body 41 along the second direction Y, the conductive channels, the heat exchange medium injection and discharge channels, and the reaction solution injection and discharge channels of the electro-photocatalytic reaction device 100 are arranged in different directions, which can effectively avoid interference between channels and ensure the effective progress of the electro-photocatalytic reaction.

[0128] The second direction Y is perpendicular to the first direction X and the thickness direction Z.

[0129] For example, see Figures 6-8 The aforementioned electro-photocatalytic reaction device 100 may further include a first clamping plate 8 and a second clamping plate 9 to clamp the back plate 5, the cover plate 6, and other components between the back plate 5 and the cover plate 6.

[0130] Along the thickness direction Z, the first clamping plate 8 is located on the side of the cover plate 6 away from the back plate 5, and has an opening 81. The opening 81 is directly opposite to the opening 61 of the cover plate 6 to ensure that light can pass through the opening 81 to provide illumination for the photocatalytic reaction.

[0131] For example, the thickness of the first clamping plate 8 and the second clamping plate 9 can be 2mm to prevent deformation when fixing other components with clamps, and at the same time, it can reduce the thickness of the electro-photocatalytic reaction device 100 and improve its integration.

[0132] See Figure 6 Along the thickness direction Z, the second clamping plate 9 can be set on the side of the back plate 5 away from the cover plate 6.

[0133] For example, the materials of the first clamping plate 8 and the second clamping plate 9 may include stainless steel. When the back plate 5 and the cover plate 6 are made of other materials with insufficient hardness (such as polytetrafluoroethylene), the first clamping plate 8 and the second clamping plate 9 can be used to fix the components between them. This can also avoid the problem of deformation of the first clamping plate 8 and the second clamping plate 9 during the fastening process, which could damage the back plate 5, the cover plate 6, the first electrode 1, the insulating structure 2, and other components.

[0134] For example, see Figures 6-8The first clamping plate 8 is provided with a plurality of third fastening holes 82, and the second clamping plate 9 is provided with a plurality of fourth fastening holes 91. Along the thickness direction Z, the third fastening holes 82 are directly opposite the first fastening holes 55, the second fastening holes 64 and the third fastening holes 91, so that fasteners (such as nuts) can pass through the third fastening holes 82, the second fastening holes 64, the first fastening holes 55 and the third fastening holes 91 respectively. By tightening or fixing the fasteners, the first clamping plate 8 and the second clamping plate 9 can be connected together, thereby achieving the purpose of fixing the back plate 5, the cover plate 6, the clamping plate 4 and other components between them using the first clamping plate 8 and the second clamping plate 9.

[0135] For example, see Figure 1 , Figure 6 and Figure 8 The second clamping plate 9 has two second interface holes 92, and is respectively positioned opposite to the two first interface holes 53 of the back plate 5 along the thickness direction Z, so as to ensure that the reaction solution injected through the second interface hole 92 can enter the through hole 11 of the first electrode 1 through the first interface hole 53, and that part of the reaction solution, reaction products and other substances discharged from the through hole 11 can flow through the first interface hole 53 into the second interface hole 92 and be discharged from the electro-photocatalytic reaction device 100.

[0136] For example, see Figure 8 The electro-photocatalytic reaction device 100 also includes two inverted conical connectors L, which can be directly and sealed to the first electrode 1, or pass through the second interface hole 92 and the first interface hole 53 respectively and be sealed to the first electrode 1 to avoid leakage of reaction solution, reaction products, etc.

[0137] This application also provides an electro-photocatalytic reaction system. Figure 9 This is a schematic diagram of an electro-photocatalytic reaction system provided in this application.

[0138] See Figure 9 The electro-photocatalytic reaction system 200 described above includes the electro-photocatalytic reaction device 100 and controller K in the above embodiments.

[0139] The controller K is connected to the electro-photocatalytic reaction device 100 and is used to regulate various operating parameters within the electro-photocatalytic reaction device 100, such as voltage, current, reaction temperature, and reaction time. Through a real-time monitoring and feedback mechanism, the controller K can dynamically adjust these parameters according to a preset program or external input commands to ensure that the electro-photocatalytic reaction of the electro-photocatalytic reaction device 100 is carried out under optimal conditions, thereby improving the reaction efficiency of the electro-photocatalytic reaction of the electro-photocatalytic reaction device 100 and enhancing the product selectivity of the electro-photocatalytic reaction, while ensuring the safety and stability of the entire electro-photocatalytic reaction process.

[0140] The technical effects of the electro-photocatalytic reaction system 200 provided in this application embodiment can be seen in the technical effects of the electro-photocatalytic reaction device 100 in the above embodiment, and will not be repeated here.

[0141] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electro-optical catalytic reaction device, characterized by, The application relates to an electro-optical catalytic reaction device. The device comprises: a first electrode; an insulating structure arranged in a ring shape; the insulating structure is arranged on one side surface of the first electrode along a thickness direction of the first electrode; a second electrode arranged in a mesh shape and having light transmission; the second electrode is arranged on a side of the insulating structure away from the first electrode along the thickness direction; the first electrode and the second electrode respectively transmit different electrical signals; the first electrode and the second electrode are arranged at intervals and are electrically insulated through the insulating structure; 2. The electro-optical catalytic reaction device according to claim 1, wherein, a clamping plate covering a surface of the second electrode away from the first electrode; the clamping plate has light transmission; the first electrode, the insulating structure and the clamping plate form a reaction cavity, and at least part of the second electrode is located in the reaction cavity. The clamping plate comprises a main body part and two conduits arranged on two sides of the main body part and connected with the main body part; 3. The electro-optic catalytic reaction device of claim 1, wherein, The main body part is located on the surface of the second electrode away from the first electrode, and the main body part is hollow; the two conduits are communicated with the main body part. The device further comprises: a back plate provided with a slot; the first electrode, the insulating structure and the second electrode are embedded in the slot; a cover plate arranged in a stack with the back plate; the cover plate is provided with an opening; the opening and the slot are arranged in a front-to-back manner along the thickness direction; the clamping plate is clamped between the back plate and the cover plate; 4. The electro-optic catalytic reaction device of claim 3, wherein, Materials of the back plate and the cover plate both comprise insulating materials. The clamping plate comprises a main body part and two conduits arranged on two sides of the main body part and connected with the main body part; 5. The electro-optic catalytic reaction device of claim 3, wherein, The back plate and / or the cover plate are further provided with a first recess; parts of the back plate and the cover plate, which are not provided with the slot, the opening and the first recess, abut against each other; the two conduits are embedded in the first recess. The back plate and / or the cover plate are further provided with a second recess; the second recess is arranged around a boundary of the slot and / or the opening; The device further comprises:

6. The electro-optic catalytic reaction device of claim 1, wherein, a sealing ring embedded in the second recess. The first electrode is provided with a through hole located outside the ring-shaped insulating structure; at least part of the second electrode is arranged in a front-to-back manner with the through hole along the thickness direction; 7. The electro-optic catalytic reaction device of claim 1, wherein, A thickness of a part where two grid lines of the second electrode overlap is greater than a thickness of the grid line; gaps exist between the insulating structure and the second electrode and between the clamping plate and the second electrode along the grid line; the through hole, the gap and the reaction cavity are communicated.

8. The electro-optic catalytic reaction device of claim 7, wherein, A shape of a surface of the first electrode and the second electrode perpendicular to the thickness direction comprises a circle, an ellipse, a rectangle, a rhombus or other polygons except the rectangle and the prism. The first electrode is provided with two through holes; A shape of a surface of the first electrode perpendicular to the thickness direction comprises an ellipse; the two through holes are arranged at two ends of the first electrode along a longest diameter of the first electrode; or a shape of a surface of the first electrode perpendicular to the thickness direction comprises a rhombus; the two through holes are arranged at two ends of the first electrode along a longest diagonal of the first electrode.

9. The electro-optic catalytic reaction device of claim 1, wherein, The material of the clamping plate comprises an insulating material.

10. The electro-optic catalytic reaction device of claim 1, wherein, The material of the second electrode comprises one or more of platinum-coated titanium, titanium and stainless steel.

11. The electro-optic catalytic reaction device of claim 1, wherein, Further comprising: First and second wires are separately arranged on both sides of the first electrode along a first direction, and are respectively electrically connected with the first electrode and the second electrode; The first direction is perpendicular to the thickness direction; The clamping plate comprises a main body and two conduits connected with the main body, and the two conduits are separately arranged on both sides of the main body along a second direction; the second direction is perpendicular to the first direction and the thickness direction, respectively.

12. An electro-optic catalytic reaction system characterized by, Comprising: The electro-optical catalytic reaction device according to any one of claims 1-11; A controller connected with the electro-optical catalytic reaction device.

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