Three-dimensional stacked photocatalytic device

By designing a three-dimensional stacked photocatalytic device and utilizing integrated components with adjustable angles, the problem of low light energy utilization per unit area in photocatalytic devices has been solved, thereby improving the efficiency of photocatalytic reactions and making it suitable for applications such as water splitting for hydrogen production and carbon dioxide photoreduction.

CN122057463APending Publication Date: 2026-05-19周鹤修
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Patent Information

Application Number
CN202411626280.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing photocatalytic devices have low light energy utilization per unit area, and the photocatalytic reaction efficiency is poor due to changes in the light irradiation angle over time.

Method used

A three-dimensional stacked photocatalytic device is designed, which is connected to an integrated component via a support frame. The integrated component includes an adjustable-angle receiving groove and a photocatalytic element, which can adjust the irradiation angle of the photocatalytic element according to the change of light angle, thereby improving the light energy utilization rate.

Benefits of technology

It effectively improves the light energy utilization rate and photocatalytic reaction efficiency per unit area, and is suitable for photocatalytic applications such as water splitting to produce hydrogen and carbon dioxide photoreduction, thereby improving the conversion efficiency of renewable energy.

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Abstract

The invention provides a three-dimensional stacked photocatalytic device, which comprises a support frame and a first integrated assembly, the first integrated assembly comprises a first bottom plate, a first accommodating groove and a first top plate, the first bottom plate is pivoted to a first pivoting hole of the support frame, the first accommodating groove is arranged above the first bottom plate, and the first top plate is arranged above the first accommodating groove. A first containing groove is formed in the first bottom plate, a first photocatalytic part is arranged on the inner side of the first containing groove, the first top plate is arranged above the first containing groove, light rays sequentially penetrate through the first top plate and the first photocatalytic part, so that the first photocatalytic part generates gas, the first bottom plate rotates in the first pivot joint hole, and the first bottom plate rotates in the first pivot joint hole. And the first integrated assembly is driven to rotate so as to adjust the irradiation angle of the first photocatalytic part.
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Description

Technical Field

[0001] This invention relates to a three-dimensional stacked photocatalytic device, particularly a device utilizing an adjustable irradiation angle of a photocatalytic element, suitable for various photocatalytic applications, including reactions such as water splitting to produce hydrogen and photoreduction of carbon dioxide. This three-dimensional design focuses on improving light energy utilization per unit area and enhancing photocatalytic efficiency. Background Technology

[0002] Photocatalysis technology has shown great potential in environmental and energy applications, especially in reactions such as water splitting to produce hydrogen and photoreduction of carbon dioxide. However, existing photocatalytic devices have low light energy utilization per unit area, which prevents the optimization of catalytic efficiency.

[0003] Meanwhile, developing more efficient devices to improve light energy utilization efficiency per unit area has become an important research topic. Traditional photocatalytic devices often rely on planar designs, which cannot fully utilize the limited surface area to achieve the maximum photocatalytic effect. In addition, the changing angle of light irradiation over time further reduces the overall efficiency of the photocatalytic reaction. Therefore, developing a device with a three-dimensional stacked design and adjustable light irradiation angle can effectively improve the light energy utilization rate per unit area and provide higher efficiency in photocatalytic reactions.

[0004] Therefore, designing a highly flexible three-dimensional stacked photocatalytic device not only effectively solves the problem of unit area utilization in photocatalytic reactions but also improves the efficiency of hydrogen production from water splitting. Furthermore, it can be extended to other photocatalytic applications such as carbon dioxide photoreduction, realizing broader application value. These devices, by adjusting the irradiation angle of the photocatalyst, can respond to changes in the illumination angle in real time, ensuring optimal utilization of light energy and improving the overall efficiency and stability of the photocatalytic reaction.

[0005] In summary, the design of the three-dimensional stacked photocatalytic device breaks through the limitations of traditional devices in terms of utilization efficiency per unit area. It can not only effectively increase the production capacity of photocatalysts, but also improve the absorption and utilization of light through a flexible angle adjustment mechanism, providing the industry with a highly efficient and stable photocatalytic solution.

[0006] In view of the problems of the prior art, the present invention provides a three-dimensional stacked photocatalytic device. This device includes a photocatalytic element with an adjustable irradiation angle. Through its stacked three-dimensional structural design, it can effectively increase the utilization of light energy per unit area and improve the overall efficiency of the photocatalytic reaction. This design is applicable to various photocatalytic reactions, including but not limited to water splitting for hydrogen production and carbon dioxide photoreduction, thereby significantly improving the conversion efficiency in renewable energy applications. Summary of the Invention

[0007] One objective of this invention is to provide a three-dimensional stacked photocatalytic device, which is pivotally connected to an integrated assembly on a support frame. The integrated assembly includes a receiving groove and a photocatalytic element. By utilizing the adjustable angle integrated assembly, the photocatalytic element can be adjusted to adjust the irradiation angle accordingly, so that the photocatalytic element is continuously irradiated with light, thereby improving the photocatalytic efficiency of the device.

[0008] To achieve the aforementioned objectives and effects, the present invention provides a three-dimensional stacked photocatalytic device that receives a liquid. The three-dimensional stacked photocatalytic device includes: a support frame and a first integrated assembly. A first pivot hole is provided on one side of the support frame. The first integrated assembly includes a first base plate, a first receiving groove, and a first top plate. One side of the first base plate is pivotally connected to the first pivot hole. The first receiving groove is disposed above the first base plate. A first photocatalyst element is disposed inside the first receiving groove. The first top plate is disposed above the first receiving groove. The first top plate corresponds to... A first upper perforation is provided at the corner of the first photocatalyst element, which connects to the inner side of the first receiving tank. The liquid enters the inner side of the first receiving tank through the first upper perforation. The first base plate rotates at the first pivot hole, causing the first integrated assembly to rotate, so that a light beam hits the first top plate. The light beam passes through the first top plate and hits the first photocatalyst element in the first receiving tank, causing the first photocatalyst element to decompose the liquid and generate a gas. The gas flows out of the first upper perforation from the inner side of the first receiving tank. This structure provides a device that can adjust the angle to improve photocatalytic efficiency.

[0009] In one embodiment of the present invention, the first base plate is provided with a reflective layer.

[0010] In one embodiment of the present invention, the first photocatalyst comprises a first polymer material disposed on the inner side of the first receiving groove.

[0011] In one embodiment of the present invention, the first photocatalyst includes a first substrate disposed on the inner side of the first receiving groove, and the first polymer material is coated on one side of the first substrate.

[0012] In one embodiment of the present invention, a second pivot hole is provided on the side of the support frame above the first pivot hole.

[0013] In one embodiment of the present invention, a first integrated component is further included, the first integrated component comprising: a connecting pipe, one end of which is connected to the first upper through hole; a second base plate, one side of which is pivotally connected to the second pivot hole, the second base plate having a lower through hole that connects to the other end of the connecting pipe; a second receiving groove disposed above the second base plate, a second photocatalyst disposed on one inner side of the second receiving groove, the second receiving groove connecting to the first lower through hole; and a second top plate disposed on the first... Above one of the two accommodating tanks, the second top plate has a second upper perforation through the corner of the second photocatalyst, and the second upper perforation is connected to the inner side of the second accommodating tank; wherein, the second bottom plate rotates at the second pivot hole and drives the second integrated assembly to rotate, the light shines on the second top plate, the light passes through the second top plate and shines on the second photocatalyst in the second accommodating tank, causing the second photocatalyst to generate the gas, and the gas flows from the inner side of the second accommodating tank to the second upper perforation and is discharged.

[0014] In one embodiment of the present invention, the second photocatalyst comprises a second polymer material disposed on the inner side of the second receiving groove.

[0015] In one embodiment of the present invention, the second photocatalyst includes a second substrate disposed on the inner side of the second receiving groove, and the second polymer material is coated on one side of the second substrate.

[0016] In one embodiment of the present invention, a first auxiliary receiving groove is provided above the first receiving groove, the first auxiliary receiving groove is disposed between the first receiving groove and the first top plate, and a first auxiliary photocatalyst is provided on one inner side of the first auxiliary receiving groove.

[0017] In one embodiment of the present invention, a second auxiliary receiving groove is provided above the second receiving groove, the second auxiliary receiving groove is disposed between the second receiving groove and the second top plate, and a second auxiliary photocatalyst is provided on one inner side of the second auxiliary receiving groove.

[0018] In one embodiment of the present invention, the first photocatalyst and the second photocatalyst are made of different materials.

[0019] In one embodiment of the present invention, the gas comprises hydrogen and the liquid comprises water. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention; Figure 2 This is an exploded view of the structure of the first embodiment of the present invention; Figures 3A to 3B This is a schematic diagram of the operation of the first embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the first embodiment of the present invention; Figures 5A to 5C This is a schematic diagram of the structure and operation of the second embodiment of the present invention; Figure 6 This is a cross-sectional schematic diagram of the second embodiment of the present invention; and Figures 7A to 7B This is a schematic diagram of a complex accommodating groove structure according to an embodiment of the present invention. [Figure Number Reference Guide] 10 Support frame 12 First pivot hole 14 Second pivot hole 20 First Integrated Component 22 First base plate 221 Reflective layer 24 First receiving slot 241 Cover 26 First Top Plate 262 First upper perforation 28 First Auxiliary Receiving Tank 30 Second integrated component 32 Second base plate 322 First under-hole 34 Second receiving slot 341 Cover 36 Second Top Plate 362 Second upper perforation 38 Second Auxiliary Reception Tank A gas B1 First photocatalyst B12 First substrate B14 First Polymer Material B1' First Auxiliary Photocatalyst B2 Second photocatalyst B22 Second Substrate B24 Second Polymer Material B2' Second Auxiliary Photocatalyst L1 light W liquid Detailed Implementation

[0021] To provide a better understanding of the structural features and effects achieved by the present invention, preferred embodiments and detailed descriptions are provided below:

[0022] In view of the problems of the prior art, the present invention comprises a first integrated component pivotally connected to a support frame. The first integrated component, which is adjustable in angle, adjusts the irradiation angle when a light source is irradiated, so that the light source continuously and sequentially passes through the first top plate and the first photocatalyst, causing the first photocatalyst to generate a gas.

[0023] Please see Figure 1 The figure shows a schematic diagram of the structure of the first embodiment of the present invention. This embodiment is a three-dimensional stacked photocatalytic device, which includes a support frame 10 and a first integrated component 20, wherein the support frame 10 is used to support the first integrated component 20.

[0024] See again Figure 1 as well as Figure 2 , Figure 2 The figure shows an exploded view of the structure of the first embodiment of the present invention. In this embodiment, a first pivot hole 12 is provided on one side of the support frame 10. The first integrated component 20 includes a first base plate 22, a first receiving groove 24 and a first top plate 26. One side of the first base plate 22 is pivotally connected to the first pivot hole 12. The first receiving groove 24 is disposed above the first base plate 22. A first photocatalyst B1 is disposed on the inner side of the first receiving groove 24. The first top plate 26 is disposed above the first receiving groove 24. A first upper through hole 262 is provided on the corner of the first photocatalyst B1. The first upper through hole 262 communicates with the inner side of the first receiving groove 24, so that liquids and gases can flow into or out of the inner side of the first receiving groove 24.

[0025] In one embodiment, the joint between the first base plate 22 and the first receiving groove 24 is sealed to prevent liquid or gas leakage.

[0026] In one embodiment, the first receiving groove 24 includes a cover 241, which sandwiches the first photocatalyst B1 with the first receiving groove 24. The cover 241 is provided with a perforation corresponding to the first upper perforation 262 of the first top plate 26 to allow fluid or gas to pass through.

[0027] In one embodiment, the joint between the first receiving groove 24 and the first top plate 26 is sealed to prevent liquid or gas leakage.

[0028] See again Figure 1 , Figure 2 And see Figures 3A to 3B as well as Figure 4 , Figures 3A to 3B This is a schematic diagram of the operation of the first embodiment of the present invention. Figure 4The figure shows a cross-sectional view of the first embodiment of the present invention. As shown in the figure, this embodiment is based on the first embodiment described above. In this embodiment, the first base plate 22 of the first integrated component 20 rotates at the first pivot hole 12, and the first base plate 22 drives the entire first integrated component 20 to rotate, so as to adjust the angle of the first integrated component 20 accordingly.

[0029] Continuing from the above, when in use, a liquid W is first added to the inner side of the first receiving tank 24. The liquid W enters the inner side of the first receiving tank 24 through the first upper perforation 262. The liquid W soaks the first photocatalyst B1. Then, an external light L1 shines on the first top plate 26. Because the first top plate 26 is light-transmitting, the light L1 passes through the first top plate 26 and shines on the first photocatalyst B1 in the first receiving tank 24, causing the first photocatalyst B1 to decompose the liquid W and generate a gas A (only part of the figure is shown). The gas A then flows from the inner side of the first receiving tank 24 to the first upper perforation 262 and is discharged and collected.

[0030] Continuing from the above, in one embodiment, the liquid W contains water, the gas A contains hydrogen, and the first photocatalyst B1 decomposes the liquid W to produce hydrogen ions and hydroxide ions.

[0031] Continuing from the above, in one embodiment, the first photocatalyst B1 includes a first polymer material B14, which is disposed on the inner side of the first receiving groove 24.

[0032] Continuing from the above, the first polymer material B14 can be polypropylene glycol (PPG), toluene-2,4-diisocyanate terminated (PTD), and 3-(4,4-bis(2-ethylhexyl)-6-methyl-4H-cyclopenta[2,1-b:3,4-b']dithiophen-2-yl)-7-methyldibenzo[b,d]thiophene-5,5-dioxide (3-(4,4-bis(2-ethylhexyl)-6-methyl-4H-cyclopenta[2,1-b:3,4-b']dithiophen-2-yl)-7-methyldibenzo[b,d]thiophene 5,5-dioxide (PCPDTDBT) and one or any combination of 3-methyl-7-(7-methyl-9,9-dioctyl-9H-fluoren-2-yl)-5-phenylbenzo[b]phosphindole5-oxide (PFBPO).

[0033] Continuing from the above, in one embodiment, the first photocatalyst B1 further includes a first substrate B12, the first substrate B12 being disposed on the inner side of the first receiving groove 24, and the first polymer material B14 being coated on one side of the first substrate B12.

[0034] Continuing from the above, in one embodiment, the wavelength of the light L1 includes 250nm to 650nm, but is not limited thereto.

[0035] Continuing from the above, in one embodiment, the first base plate 22 is provided with a reflective layer 221, which reflects the light L1 to increase the illumination of the first photocatalyst B1 and improve the photocatalytic efficiency of the first photocatalyst B1.

[0036] Please see Figures 5A to 5CThis is a schematic diagram of the structure and operation of the second embodiment of the present invention. As shown in the figure, this embodiment is the second embodiment, which is based on the first embodiment described above. In this embodiment, it further includes a first integrated component 30 and a second pivot hole 14 disposed above the first pivot hole 12 on the side of the support frame 10. The first integrated component 30 includes a connecting pipe 31, a second bottom plate 32, a second receiving groove 34, and a second top plate 36. One end of the connecting pipe 31 is connected to the first upper through hole 262 for receiving the gas A and transporting the liquid W. One side of the second bottom plate 32 is pivotally connected to the second pivot hole 14. A lower perforation 322 is provided through the second base plate 32, which is connected to the other end of the connecting pipe 31. The second receiving groove 34 is disposed above the second base plate 32. A second photocatalyst B2 is disposed on the inner side of the second receiving groove 34. The second receiving groove 34 is connected to the first lower perforation 322. The second top plate 36 is disposed above the second receiving groove 34. A second upper perforation 362 is provided on the second top plate 36 corresponding to the corner of the second photocatalyst B2. The second upper perforation 362 is connected to the inner side of the second receiving groove 34, so that liquids and gases can flow into or out of the inner side of the second receiving groove 34.

[0037] In one embodiment, the joint between the second bottom plate 32 and the second receiving groove 34, and the joint between the second receiving groove 34 and the second top plate 36 are similarly sealed to prevent liquid or gas leakage.

[0038] In one embodiment, the second receiving groove 34 includes a cover 341, which sandwiches the second photocatalyst B2 between the cover 341 and the second receiving groove 34. The cover 341 is provided with a perforation corresponding to the second upper perforation 362 of the second top plate 36 to allow fluid or gas to pass through.

[0039] See again Figures 5A to 5C And see Figure 6 , Figure 6 The figure shows a cross-sectional view of the second embodiment of the present invention. As shown in the figure, this embodiment is based on the second embodiment described above. In this embodiment, similar to the first integrated component 20, the second base plate 32 of the second integrated component 30 rotates at the second pivot hole 14, and the second base plate 32 drives the overall rotation of the second integrated component 30 to adjust the angle of the second integrated component 30 accordingly.

[0040] Continuing from the above, when in use, the liquid W is first added to the inner side of the second accommodating tank 34 to soak the second photocatalyst B2. Since the second accommodating tank 34 is connected to the first accommodating tank 24 by the connecting pipe 31, part of the liquid W flows into the first accommodating tank 24 to soak the first photocatalyst B1. Then, the external light L1 is shone onto the second top plate 36. Since the second top plate 36 is light-transmitting, the light L1 passes through the second top plate 36 and shines onto the second photocatalyst B2 in the second accommodating tank 34, causing the second photocatalyst B2 to decompose the liquid W to produce gas A (only part is shown in the figure). Gas A then flows from the inner side of the second accommodating tank 34 to the second upper perforation 362 for discharge and collection.

[0041] Continuing from the above, since the second integrated component 30 is disposed above the first integrated component 20, and the second base plate 32 of the second integrated component 30 is light-transmitting, the light L1 passing through the second integrated component 30 can be further incident on the first integrated component 20. Its light path is the same as that of the first embodiment described above, so it will not be described again.

[0042] Continuing from the above, the gas A generated by the first integrated component 20 is transported to the inner side of the second receiving groove 34 through the connecting pipe 31, and then discharged through the second upper perforation 362 and collected.

[0043] Continuing from the above, in one embodiment, the second photocatalyst B2 includes a second polymer material B24, which is disposed on the inner side of the second receiving groove 34.

[0044] Continuing from the above, the second polymer material B24 can be polypropylene glycol (PPG), toluene-2,4-diisocyanate terminated (PTD), and 3-(4,4-bis(2-ethylhexyl)-6-methyl-4H-cyclopenta[2,1-b:3,4-b']dithiophen-2-yl)-7-methyldibenzo[b,d]thiophene-5,5-dioxide (3-(4,4-bis(2-ethylhexyl)-6-methyl-4H-cyclopenta[2,1-b:3,4-b']dithiophen-2-yl)-7-methyldibenzo[b,d]thiophene 5,5-dioxide (PCPDTDBT) and one or any combination of 3-methyl-7-(7-methyl-9,9-dioctyl-9H-fluoren-2-yl)-5-phenylbenzo[b]phosphindole5-oxide (PFBPO).

[0045] Continuing from the above, in one embodiment, the second photocatalyst B2 further includes a second substrate B22, the second substrate B22 being disposed on the inner side of the second receiving groove 34, and the second polymer material B24 being coated on one side of the second substrate B22.

[0046] Continuing from the above, in one embodiment, the first photocatalyst B1 and the second photocatalyst B2 are made of different materials to effectively utilize the different wavelengths of the light L1 and further improve the photocatalytic efficiency.

[0047] Please see Figures 7A to 7B The figure shows a schematic diagram of a plurality of accommodating tanks according to an embodiment of the present invention. As shown in the figure, this embodiment is based on the first embodiment or the second embodiment described above. In this embodiment, a first auxiliary accommodating tank 28 is provided above the first accommodating tank 24 of the first integrated component 20. The first auxiliary accommodating tank 28 is disposed between the first accommodating tank 24 and the first top plate 26. A first auxiliary photocatalyst B1' is provided on one inner side of the first auxiliary accommodating tank 28 to further increase the amount of gas generated by the first integrated component 20.

[0048] Continuing from the above, in this embodiment, a second auxiliary receiving groove 38 is provided above the second receiving groove 34 of the second integrated component 30. The second auxiliary receiving groove 38 is disposed between the second receiving groove 34 and the second top plate 36. A second auxiliary photocatalyst B2' is provided on one inner side of the second auxiliary receiving groove 38, further increasing the amount of gas generated by the second integrated component 30.

[0049] Continuing from the above, in one embodiment, multiple of the auxiliary receiving slots 28 may be stacked to form a photocatalytic device comprising a plurality of receiving slots, but this is not a limitation.

[0050] In summary, the present invention provides a three-dimensional stacked photocatalytic device, which pivotally connects integrated components to a support frame and adjusts the rotation angle of the integrated components according to changes in external light (e.g., angle) to increase the efficiency of gas generation by photocatalysis. Furthermore, by pivoting multiple integrated components to the support frame and capturing the energy of light of different wavelengths by the multiple integrated components, the efficiency of gas generation by photocatalysis is further increased, thus solving the problem of poor efficiency in gas generation by photocatalysis in the prior art.

Claims

1. A three-dimensional stacked photocatalytic device, characterized in that, It receives a liquid, and the three-dimensional stacked photocatalytic device comprises: A support frame, with a first pivot hole on one side; and A first integrated component, comprising: A first base plate, one side of which is pivotally connected to the first pivot hole; A first receiving groove is disposed above a first base plate, and a first photocatalyst is disposed on an inner side of the first receiving groove; and A first top plate is disposed above the first receiving groove. The first top plate has a first upper through hole through the corner of the first photocatalyst, and the first upper through hole communicates with the inner side of the first receiving groove. The liquid enters the inner side of the first receiving tank through the first upper perforation. The first bottom plate rotates at the first pivot hole, causing the first integrated component to rotate, so that a light beam hits the first top plate. The light beam passes through the first top plate and hits the first photocatalyst in the first receiving tank, causing the first photocatalyst to decompose the liquid and generate a gas. The gas flows out of the first upper perforation from the inner side of the first receiving tank.

2. The three-dimensional stacked photocatalytic device as described in claim 1, characterized in that, The first base plate is provided with a reflective layer.

3. The three-dimensional stacked photocatalytic device as described in claim 1, characterized in that, The first photocatalyst includes a first polymer material disposed on the inner side of the first receiving groove.

4. The three-dimensional stacked photocatalytic device as described in claim 3, characterized in that, The first photocatalyst includes a first substrate disposed inside the first receiving groove, and the first polymer material is coated on one side of the first substrate.

5. The three-dimensional stacked photocatalytic device as described in claim 1, characterized in that, A second pivot hole is provided on the side of the support frame above the first pivot hole.

6. The three-dimensional stacked photocatalytic device as described in claim 5, characterized in that, It further includes a first integrated component, which comprises: A connecting tube, one end of which is connected to the first upper through hole; A second base plate, one side of which is pivotally connected to the second pivot hole, and the second base plate has a through hole that connects to the other end of the connecting pipe; A second receiving groove is disposed above the second base plate, and a second photocatalyst is disposed on the inner side of the second receiving groove. The second receiving groove is connected to the first lower through hole; and A second top plate is disposed above the second receiving groove. The second top plate has a second upper through hole through the corner of the second photocatalyst, and the second upper through hole communicates with the inner side of the second receiving groove. The second base plate rotates at the second pivot hole and drives the second integrated component to rotate. The light shines on the second top plate and passes through the second top plate to the second photocatalyst in the second receiving groove, causing the second photocatalyst to generate the gas. The gas flows from the inside of the second receiving groove to the second upper perforation and is discharged.

7. The three-dimensional stacked photocatalytic device as described in claim 6, characterized in that, The second photocatalyst includes a second polymer material disposed on the inner side of the second receiving groove.

8. The three-dimensional stacked photocatalytic device as described in claim 7, characterized in that, The second photocatalyst includes a second substrate disposed inside the second receiving groove, and the second polymer material is coated on one side of the second substrate.

9. The three-dimensional stacked photocatalytic device as described in claim 1, characterized in that, A first auxiliary receiving tank is provided above the first receiving tank, the first auxiliary receiving tank is located between the first receiving tank and the first top plate, and a first auxiliary photocatalyst is provided on one inner side of the first auxiliary receiving tank.

10. The three-dimensional stacked photocatalytic device as described in claim 6, characterized in that, A second auxiliary receiving tank is provided above the second receiving tank, and the second auxiliary receiving tank is located between the second receiving tank and the second top plate. A second auxiliary photocatalyst is provided on one inner side of the second auxiliary receiving tank.

11. The three-dimensional stacked photocatalytic device as described in claim 6, characterized in that, The first photocatalyst and the second photocatalyst are made of different materials.

12. The three-dimensional stacked photocatalytic device as described in claim 1, characterized in that, The gas contains hydrogen and the liquid contains water.