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Photocatalyst for efficiently photocatalytically decomposing water to produce hydrogen and preparation method thereof

A technology of photocatalyst and photocatalysis, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, hydrogen production, etc., can solve the problems that cannot meet the requirements of practical application, achieve low price, stable chemical properties, and improve photolysis The effect of hydrogen production performance of water

Pending Publication Date: 2020-12-04
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly improves the catalytic activity and stability of the catalyst, but it is far from meeting the requirements of practical applications.

Method used

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  • Photocatalyst for efficiently photocatalytically decomposing water to produce hydrogen and preparation method thereof
  • Photocatalyst for efficiently photocatalytically decomposing water to produce hydrogen and preparation method thereof
  • Photocatalyst for efficiently photocatalytically decomposing water to produce hydrogen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A photocatalyst for efficient photocatalytic decomposition of water to produce hydrogen. The cadmium zinc sulfide in the photocatalyst has a granular structure, and the diameter of the cadmium zinc sulfide is about 20nm-100nm. MoS 2 It is a flower-like structure formed by two-dimensional flakes, and the cadmium-zinc sulfide solid solution particles are evenly distributed in the MoS 2 on the surface.

[0033] The invention presents a method for preparing a photocatalyst for efficient photocatalytic decomposition of water to produce hydrogen, as shown in the attached figure 1 The specific steps shown are as follows:

[0034] Step 1. Add cadmium acetate and anhydrous zinc acetate to absolute ethanol, stir the mixed solution evenly, and then add thioacetamide and MoS 2 , stir again to obtain the raw material liquid,

[0035] Step 2. Transfer the raw material solution obtained in step 1 to a reaction kettle, and react at high temperature. After the reaction is completed, ...

Embodiment 2

[0045] A photocatalyst for efficient photocatalytic decomposition of water to produce hydrogen. The cadmium zinc sulfide in the photocatalyst has a granular structure, and the diameter of the cadmium zinc sulfide is about 20nm-100nm. MoS 2 It is a flower-like structure formed by two-dimensional flakes, and the cadmium-zinc sulfide solid solution particles are evenly distributed in the MoS 2 on the surface.

[0046] A kind of preparation method of the photocatalyst of the present invention high-efficiency photocatalysis decomposes water and produces hydrogen, concretely implement according to the following steps:

[0047] Step 1. Add cadmium acetate and anhydrous zinc acetate to absolute ethanol, stir the mixed solution evenly, and then add thioacetamide and MoS 2 , stir again to obtain the raw material liquid,

[0048] Step 2. Transfer the raw material solution obtained in step 1 to a reaction kettle, and react at high temperature. After the reaction is completed, the soluti...

Embodiment 3

[0056] A photocatalyst for efficient photocatalytic decomposition of water to produce hydrogen. The cadmium zinc sulfide in the photocatalyst has a granular structure, and the diameter of the cadmium zinc sulfide is about 20nm-100nm. MoS 2 It is a flower-like structure formed by two-dimensional flakes, and the cadmium-zinc sulfide solid solution particles are evenly distributed in the MoS 2 on the surface.

[0057] A kind of preparation method of the photocatalyst of the present invention high-efficiency photocatalysis decomposes water and produces hydrogen, concretely implement according to the following steps:

[0058] Step 1. Add cadmium acetate and anhydrous zinc acetate to absolute ethanol, stir the mixed solution evenly, and then add thioacetamide and MoS 2 , stir again to obtain the raw material liquid,

[0059] Step 2. Transfer the raw material solution obtained in step 1 to a reaction kettle, and react at high temperature. After the reaction is completed, the soluti...

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Abstract

The invention discloses a photocatalyst for efficiently photocatalytically decomposing water to produce hydrogen and a preparation method of the photocatalyst. Cadmium zinc sulfide in the photocatalyst is of a granular structure, the diameter of the cadmium zinc sulfide is about 20 nm to 100 nm, MoS2 is of a flower-shaped structure formed by stacking two-dimensional sheets, and cadmium zinc sulfide solid solution particles are evenly distributed on the surface of MoS2. The preparation method comprises the following steps: respectively adding cadmium acetate and anhydrous zinc acetate into absolute ethyl alcohol, uniformly stirring a mixed solution, then adding thioacetamide and MoS2, uniformly stirring again to obtain a raw material solution, transferring the raw material solution into a reaction kettle, reacting at high temperature, cooling the solution to room temperature after the reaction is finished, centrifuging the obtained product through a centrifugal machine, collecting precipitates; and cross-washing the precipitates with deionized water and absolute ethyl alcohol, and drying the washed precipitates in a drying oven to obtain a product, namely the MoS2 / Zn0. 5Cd0. 5S photocatalyst. The flower-like metal sulfide (MoS2) and cadmium zinc sulfide are compounded to construct the heterojunction, thereby enhancing the water photolysis hydrogen production performance.

Description

technical field [0001] The invention belongs to the field of textile engineering, and relates to a photocatalyst for efficiently photocatalytically decomposing water to produce hydrogen, and also relates to a preparation method of the photocatalyst. Background technique [0002] With the continuous improvement of the quality of human life, people are more and more concerned about environmental issues and energy issues. But so far, fossil fuels such as natural gas, coal, and petroleum are still the most used by humans in terms of fuel. They are non-renewable energy sources with finite reserves, and at current consumption rates, fossil fuels will be exhausted within a few hundred years. Moreover, during the combustion of fossil fuels, a large amount of harmful gases such as carbon dioxide and sulfur oxides will be emitted. These emissions will lead to global warming, a serious increase in acid rain, and the deterioration of the ecological environment. Therefore, in order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J37/10C01B3/04
CPCB01J27/051B01J37/10C01B3/042B01J35/39B01J35/23Y02E60/36
Inventor 卢定泽李航张育豪曾宜梅吴琼张勃宇秦成
Owner XI'AN POLYTECHNIC UNIVERSITY
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