Integrated photoelectrochemical sensing device

Abstract

The integrated photoelectrochemical sensing device comprises an outer cover, a reaction tank and a cover body, the reaction tank is arranged on the inner side of the outer cover, electrolyte is stored in the reaction tank, the cover body used for sealing the outer cover is arranged on the top of the outer cover, and a sealed dark space is formed in the outer cover after the cover body is closed; two circular electrode through holes are formed in the cover body and used for placing a reference electrode and an auxiliary electrode respectively, a rectangular electrode through hole is further formed in the cover body, a working electrode is placed on the inner side of the rectangular electrode through hole, and an LED light source located on the right side of the reaction tank is arranged on the inner side of the outer cover; a quartz light-transmitting sheet is arranged on the side wall, facing the LED light source, of the reaction tank, light emitted by the LED light source can penetrate through the quartz light-transmitting sheet to enter the reaction tank and irradiate on the working electrode, the light utilization rate and the accuracy of a detection result are improved, and the device is resistant to acid and alkali corrosion, easy to install, small and portable.

Description

Technical Field

[0001] The utility model relates to the technical field of photoelectrochemical technology, in particular to an integrated photoelectrochemical sensing device. Background Art

[0002] When performing photoelectrochemical detection, the existing ones mainly rely on light-emitting elements and electrochemical systems. This operation is mainly completed by two devices. The electrochemical system includes a reaction cell, a reference electrode, an auxiliary electrode and a working electrode. The electrolyte is injected into the reaction cell. The reference electrode is used to compare the potential of the working electrode. The auxiliary electrode is used to conduct current. The reference electrode and the auxiliary electrode form a polarization circuit. The reference electrode and the working electrode form a test circuit. The light-emitting element emits light to the working electrode. Under light conditions, the working electrode and the electrolyte produce a chemical reaction. Then the test device detects the potential difference between the reference electrode and the working electrode in the test circuit. During the whole process, the light flux irradiated on the working electrode is a very important parameter, and light interference other than the excitation light needs to be eliminated during detection. If the external light source is not unique, the light flux irradiated on the working electrode will change, affecting the test accuracy. That is, it is necessary to detect in a dark environment, which is extremely inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an integrated photoelectrochemical sensor device in view of the above shortcomings.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An integrated photoelectrochemical sensor device comprises an outer cover, a reaction cell and a cover body, wherein the inner side of the outer cover is provided with a reaction cell, an electrolyte is stored in the reaction cell, and the top of the outer cover is provided with a cover body for closing the outer cover, and when the cover body is closed, a closed dark space is formed in the outer cover;

[0006] The cover body is provided with two circular electrode through holes, which are used to place a reference electrode and an auxiliary electrode respectively. The cover body is also provided with a rectangular electrode through hole, and a working electrode is placed inside the rectangular electrode through hole. The tops of the reference electrode, the auxiliary electrode and the working electrode are electrically connected to an external photoelectrochemical test spectrometer through wires. An LED light source is arranged on the inside of the outer cover and is located on the right side of the reaction cell. A quartz light-transmitting sheet is arranged on the side wall of the reaction cell facing the LED light source. Light emitted by the LED light source can pass through the quartz light-transmitting sheet into the reaction cell and irradiate the working electrode.

[0007] Furthermore, a power switch is provided on the outer cover, and the power switch is electrically connected to the LED light source.

[0008] Furthermore, the working electrode is parallel to the LED light source, so that the light emitted by the LED light source is perpendicular to the working electrode, and the working electrode is made of conductive glass.

[0009] Furthermore, the reaction pool is made of quartz.

[0010] Furthermore, the cover is made of polytetrafluoroethylene.

[0011] Furthermore, a lifting hole is provided at the bottom of the outer cover, and the reaction pool can be pushed out of the outer cover through the lifting hole using an external structure for cleaning and storage.

[0012] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0013] The utility model fixes the LED light source on the outside of the reaction pool, places the reaction pool on the inside of the outer cover, and covers the cover so that the inside of the outer cover is a dark environment. The LED light source is the only light source, so the luminous flux and the lighting angle in the reaction pool are constant, which improves the light utilization rate and the accuracy of the detection result, and facilitates the integrated operation of light and electrochemical detection. The pool body is made of quartz stone, which has stable chemical properties and will not cause chemical backflow with the electrolyte, and is resistant to acid and alkali corrosion.

[0014] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a cross-sectional view of the internal structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the outer cover;

[0018] Figure 4 Schematic diagram of the three-dimensional structure of the reaction pool;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the cover;

[0020] Figure 6 Schematic diagram of the three-dimensional structure of the reference electrode, auxiliary electrode and working electrode.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Outer cover; 101. Lifting hole; 2. Reaction cell; 3. Cover; 301. Circular electrode through hole; 302. Rectangular electrode through hole; 4. Reference electrode; 5. Auxiliary electrode; 6. Working electrode; 7. LED light source; 8. Quartz light-transmitting sheet; 9. Power switch. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] like Figure 1-6 As shown, an integrated photoelectrochemical sensing device comprises an outer cover 1, a reaction cell 2 and a cover 3. The reaction cell 2 is arranged inside the outer cover 1, and electrolyte is stored inside the reaction cell 2. The top of the outer cover 1 is provided with a cover 3 for closing the outer cover 1. When the cover 3 is closed, a closed dark space is formed inside the outer cover 1.

[0026] The cover body 3 is provided with two circular electrode through holes 301, and the two circular electrode through holes 301 are used to place the reference electrode 4 and the auxiliary electrode 5 respectively. The cover body 3 is also provided with a rectangular electrode through hole 302, and the working electrode 6 is placed inside the rectangular electrode through hole 302. The tops of the reference electrode 4, the auxiliary electrode 5 and the working electrode 6 are electrically connected to the external photoelectrochemical test spectrometer through wires. The inner side of the outer cover 1 is provided with an LED light source 7 located on the right side of the reaction cell 2, and a quartz light-transmitting sheet 8 is provided on the side wall of the reaction cell 2 facing the LED light source 7. The light emitted by the LED light source 7 can pass through the quartz light-transmitting sheet 8 into the interior of the reaction cell 2 and irradiate the working electrode 6.

[0027] As an implementation manner, a power switch 9 is provided on the outer cover 1 , and the power switch 9 is electrically connected to the LED light source 7 .

[0028] As an implementation mode, the working electrode 6 is parallel to the LED light source 7, so that the light emitted by the LED light source 7 is perpendicular to the working electrode 6, and the working electrode 6 is made of conductive glass.

[0029] As an implementation manner, the reaction pool 2 is made of quartz.

[0030] As an implementation manner, the cover body 3 is made of polytetrafluoroethylene.

[0031] As an embodiment, a lifting hole 101 is provided at the bottom of the outer cover 1, and the reaction pool 2 can be pushed out of the outer cover 1 through the lifting hole 101 using an external structure for cleaning and storage.

[0032] In the present invention: the model of the photoelectrochemical test spectrometer is Zhuoli Hanguang-SCS10-PEC.

[0033] The working process of the utility model is as follows: the reaction pool 2 is placed inside the outer cover 1, and then the cover body 3 is covered so that the reaction pool 2 is located in a dark environment, the reference electrode 4 and the auxiliary electrode 5 are respectively placed in the two circular electrode through holes 301, and then the working electrode 6 is placed in the rectangular electrode through hole 302, and then the reference electrode 4, the auxiliary electrode 5 and the working electrode 6 are all connected to an external photoelectrochemical test spectrometer, the reference electrode 4 and the auxiliary electrode 5 form a polarization circuit, and the reference electrode 4 and the working electrode 6 form a test circuit, and the power switch 9 is turned on so that the light emitted by the LED light source 7 is irradiated on the working electrode 6 through the transparent quartz plate, and the irradiation time of the LED light source 7 is manually adjusted or an LED light source 7 with a timing function is used to observe and record the potential difference between the reference electrode 4 and the working electrode 6, and after the test is completed, an external device can be used to push the reaction pool 2 out of the outer cover 1 through the lifting hole 101 for cleaning and storage.

[0034] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. An integrated photoelectrochemical sensing device, characterized in that: The invention comprises an outer cover (1), a reaction pool (2) and a cover body (3), wherein the reaction pool (2) is arranged on the inner side of the outer cover (1), an electrolyte is stored in the reaction pool (2), and a cover body (3) for closing the outer cover (1) is arranged on the top of the outer cover (1), and when the cover body (3) is closed, a closed dark space is formed in the outer cover (1); The cover (3) is provided with two circular electrode through holes (301), the two circular electrode through holes (301) are used to place a reference electrode (4) and an auxiliary electrode (5) respectively, the cover (3) is also provided with a rectangular electrode through hole (302), a working electrode (6) is placed inside the rectangular electrode through hole (302), the tops of the reference electrode (4), the auxiliary electrode (5) and the working electrode (6) are electrically connected to an external photoelectrochemical test spectrometer through wires, an LED light source (7) is arranged on the inside of the outer cover (1) and is located on the right side of the reaction pool (2), a quartz light-transmitting sheet (8) is arranged on the side wall of the reaction pool (2) facing the LED light source (7), and light emitted by the LED light source (7) can pass through the quartz light-transmitting sheet (8) into the reaction pool (2) and irradiate the working electrode (6).

2. The integrated photoelectrochemical sensing device according to claim 1, characterized in that: The outer cover (1) is provided with a power switch (9), and the power switch (9) is electrically connected to the LED light source (7).

3. The integrated photoelectrochemical sensing device according to claim 1, characterized in that: The working electrode (6) is parallel to the LED light source (7), so that the light emitted by the LED light source (7) is perpendicular to the working electrode (6); the working electrode (6) is made of conductive glass.

4. The integrated photoelectrochemical sensing device according to claim 1, characterized in that: The reaction pool (2) is made of quartz.

5. The integrated photoelectrochemical sensing device according to claim 1, characterized in that: The cover body (3) is made of polytetrafluoroethylene.

6. The integrated photoelectrochemical sensing device according to claim 1, characterized in that: The bottom of the outer cover (1) is provided with a lifting hole (101), and the reaction pool (2) can be pushed out of the outer cover (1) through the lifting hole (101) using an external structure for cleaning and storage.

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