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Enhanced water photolysis hydrogen production device

An enhanced technology for hydrogen production by photolysis of water, applied in the field of hydrogen production, can solve the problems of low hydrogen production efficiency and low light utilization efficiency, achieve high hydrogen production efficiency, high light utilization rate, and improve the ability of photolysis of water Effect

Inactive Publication Date: 2020-09-22
中山科立特光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional photolysis of water to produce hydrogen, the light utilization efficiency is low, resulting in low hydrogen production efficiency

Method used

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  • Enhanced water photolysis hydrogen production device
  • Enhanced water photolysis hydrogen production device
  • Enhanced water photolysis hydrogen production device

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The invention provides an enhanced photolysis water hydrogen production device. Such as figure 1 As shown, the enhanced photo-splitting water hydrogen production device includes a base layer 1 , a reflective layer 2 , a silicon dioxide part 3 , a thin film layer 4 , and a first titanium dioxide part 5 . The reflective layer 2 is placed on the base layer 1 . The material of reflective layer 2 is noble metal, which is used to reflect from figure 1 Light incident from above. The cross section of the silica portion 3 is tapered. Silicon dioxide portions 3 are placed periodically on the reflective layer 2 . The silicon dioxide part 3 can be strip-shaped, so that the strip-shaped silicon dioxide part 3 is periodically placed on the reflective layer 2 according to a certain direction. The silicon dioxide part 3 can also be an independent cone shape, so that the independent silicon dioxide part 3 is periodically placed on the reflective layer 2 in two directions. The thin...

Embodiment 2

[0027] On the basis of Example 1, such as figure 2 As shown, the upper surface of the first titanium dioxide portion 5 is concave. That is to say, near the silicon dioxide part 3, the first titanium dioxide part 5 is high; at a place away from the silicon dioxide part 3, the first titanium dioxide part 5 is low. In this way, the first titanium dioxide part 5 has more surface area, and the contact area with water is larger, and it is easier to photolyze water, and the bubbles generated by photolyzed water are also easier to desorb from the titanium dioxide material, thereby further improving the optical efficiency. Hydrolysis ability. On the other hand, near the silicon dioxide part 3, the titanium dioxide material is relatively thin, and under the action of incident light, a strong electric field region can be formed to enhance the interaction between light and the titanium dioxide material, and the titanium dioxide material will generate more photogenerated electrons and ph...

Embodiment 3

[0029] On the basis of Example 2, the inclination angles on both sides of the silicon dioxide portion 3 are the same. The inclination angles of the two sides of adjacent silicon dioxide portions 3 are different. That is to say, for one silicon dioxide part 3 , the inclination angles of the two sides of the tapered structure are the same, which is equivalent to an isosceles structure. However, for adjacent silicon dioxide portions 3 , the inclination angles of the two sides of the tapered structure are different. Although the cross-section of each silicon dioxide part 3 is an isosceles structure, the shapes of the cross-sections of adjacent silicon dioxide parts 3 are different: the base angles of the isosceles structures are different. In this way, for the groove formed by the adjacent silicon dioxide part 3, the two sides of the groove are asymmetrical, and the situation of the bubbles being precipitated from both sides of the groove is also asymmetrical, and the bubbles are...

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Abstract

The invention provides an enhanced water photolysis hydrogen production device, which is characterized in that a reflecting layer is arranged on a substrate layer, the section of a silicon dioxide part is conical, the silicon dioxide part is periodically arranged on the reflecting layer, a film layer covers the silicon dioxide part, and a first titanium dioxide part is arranged in a groove formedby adjacent silicon dioxide parts. During application, light is limited in the silicon dioxide parts by a thin film layer, so that the light can be fully utilized by the first titanium dioxide part, and more photo-generated electrons and photo-generated holes are generated in the first titanium dioxide part; besides, the Fermi level of the thin film layer is lower, and the thin film layer is in contact with a titanium dioxide material to form a potential barrier, so that photo-induced electrons quickly move to the surface of the thin film layer to participate in an oxidation reaction, the service lives of the photo-induced electrons and photo-induced holes are prolonged, the water photolysis capacity of the first titanium dioxide layer is improved, and the hydrogen production efficiency isimproved. The enhanced water photolysis hydrogen production device has the advantages of high light utilization rate and high hydrogen production efficiency, and has important application prospects in the field of hydrogen production.

Description

technical field [0001] The invention relates to the technical field of hydrogen production, in particular to an enhanced photolysis water hydrogen production device. Background technique [0002] In recent years, society is facing more and more serious challenges in terms of energy crisis and environmental pollution. Scientific discovery Because hydrogen energy has the characteristics of high efficiency and cleanness, hydrogen energy is generally considered to be the most appropriate energy carrier in the future. Hydrogen production by photolysis of water has the advantages of less pollution and convenient application, and is an important means of hydrogen production. In the traditional photolysis of water to produce hydrogen, the light utilization efficiency is low, resulting in low hydrogen production efficiency. Contents of the invention [0003] In order to solve the above problems, the present invention provides an enhanced photolysis water hydrogen production devic...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J21/08B01J23/42C01B3/04
CPCB01J21/063B01J21/08B01J23/42C01B3/042B01J35/39Y02E60/36
Inventor 不公告发明人
Owner 中山科立特光电科技有限公司
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