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High-selectivity CO2 reduction photocatalyst, preparation method and application

A photocatalyst and high-selectivity technology, which can be used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. Simple, easy-to-use effects

Inactive Publication Date: 2018-03-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a highly selective CO 2 Reduced photocatalyst, preparation method and application

Method used

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  • High-selectivity CO2 reduction photocatalyst, preparation method and application
  • High-selectivity CO2 reduction photocatalyst, preparation method and application
  • High-selectivity CO2 reduction photocatalyst, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh 0.08g of anhydrous zinc acetate into 60mL of ethanol, and keep stirring for 40 minutes to fully dissolve;

[0029] (2) With the conductive surface of the cleaned conductive glass (FTO) facing up, dip it in the above solution for 20s, then take it out, and dry it with argon gas; repeat the dipping-argon gas drying step 6 times;

[0030] (3) Then transfer the impregnated conductive glass to a tube furnace, control the heating rate, raise the temperature to 350°C at a rate of 3°C / min, and roast it in the air atmosphere for 30min to obtain a conductive glass uniformly covered with zinc oxide crystals. Glass;

[0031] (4) Weigh 0.48g of zinc acetate dihydrate in 30mL of deionized water, stir until clear and transparent to obtain solution A; meanwhile weigh 0.43g of urea in 30mL of deionized water, stir until clear and transparent to obtain solution B; Pour and B into a 100mL polytetrafluoroethylene autoclave at the same time, stir for 10 minutes to make it fully m...

Embodiment 2

[0037] In step (7) of Example 1, 20 μL of 20 g / L silver nitrate was changed to 40 μL of 10 g / L palladium chloride, and the rest of the preparation method and activity testing method were basically the same as in Example 1.

Embodiment 3

[0039] In step (7) of Example 1, 20 μL of 20 g / L silver nitrate was changed to 40 μL of 20 g / L silver nitrate, and the rest of the preparation method and activity testing method were basically the same as in Example 1.

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Abstract

The invention discloses a high-selectivity CO2 reduction photocatalyst, a preparation method and application. The preparation method comprises the steps of preparing an ultrathin mesoporous ZnO nanosheet on a substrate material through a high-temperature calcination-hydrothermal method, then adopting an in-situ photodeposition method for reducing and depositing silver nitrate or palladium chlorideon the ultrathin mesoporous ZnO nanosheet, and preparing to obtain the photocatalyst. The photocatalyst can be used for high-efficiently reducing carbon dioxide; after illumination for 4 hours, the yield of methane and CO reaches up to 90 percent or more; and the high-selectivity CO2 reduction photocatalyst has higher selectivity and activity stability.

Description

technical field [0001] The invention belongs to the field of photocatalyst preparation, in particular to a highly efficient and stable high-selectivity CO 2 Reduced photocatalyst, preparation method and application. Background technique [0002] The continuous development of industry and the advancement of science and technology have brought unprecedented prosperity to contemporary society. However, while industrial civilization has brought us progress, development and prosperity, it has inevitably brought about other negative problems, such as environmental problems, energy problems, etc., which have seriously affected the development of human social life. In 2013, many cities in China were affected by smog weather, which caused great troubles to people's lives. In addition, the shortage of water resources, natural gas and other energy reminds us that environmental problems and energy problems are already There are two major problems that need to be solved urgently on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66B01J23/60B01J37/02B01J37/08B01J37/10B01J37/16B82Y30/00C07C1/12C07C9/04C01B32/40
CPCC07C1/12B01J23/60B01J23/66B01J37/0201B01J37/08B01J37/10B01J37/16B01J35/39C07C9/04
Inventor 龙金林孟令书赵一波员汝胜丁正新张子重侯乙东徐超
Owner FUZHOU UNIV
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