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Preparation method of ZnO-CuO-FeOOH composite film for photoelectric catalysis hydrogen production

A technology of photoelectric catalysis and composite thin films, which is applied in the fields of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., which can solve the problem of few reports on photoelectrocatalytic hydrogen production and few researches on modification and other problems, to achieve the effect of simple and easy operation, low cost and good performance of the preparation method

Inactive Publication Date: 2018-01-30
TIANJIN CHENGJIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the modification of ZnO mainly focuses on the construction of heterojunctions. There are few studies on the modification of ZnO functional layers with different properties, and there are relatively few reports on the photocatalytic hydrogen production of the ZnO-CuO-FeOOH ternary functional layer system.

Method used

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  • Preparation method of ZnO-CuO-FeOOH composite film for photoelectric catalysis hydrogen production

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Step 1: Preparation of ZnO thin film

[0036] 11g of zinc acetate [Zn(CH 3 COO) 2 2H 2 O] was added to 100ml of ethylene glycol methyl ether [CH 3 OCH 2 CH 2 OH], stirred magnetically at 45°C for 30min, then added dropwise 6ml of monoethanolamine [HO(CH 2 ) 2 NH 2 ], continue stirring for 1.5h to obtain a light yellow transparent solution, which is 0.5mol L -1 ZnO sol, the ZnO sol was left standing for 7 days to obtain light yellow transparent ZnO gel;

[0037] The ZnO seed layer was prepared by the dipping and pulling method, that is, the ZnO seed layer was plated on the conductive glass at a speed of 2mm / s, dried at 60°C, and dried at 60°C for 2h after two layers were plated in the same way; The ZnO seed layer is heated at 2°C / min to 200°C for 30 minutes, and then continues to heat up to 450°C for 1 hour to obtain the ZnO seed layer;

[0038] The hydrothermal method was used in the growth solution (the growth solution was 0.04mol L -1 zinc nitrate and hexam...

Embodiment 2

[0046] Step 1: Preparation of ZnO thin film

[0047] 3.3g of zinc acetate [Zn(CH 3 COO) 2 2H 2 O] added to 50ml of ethylene glycol methyl ether [CH 3 OCH 2 CH 2 OH], stirred magnetically at 50°C for 20min, then added dropwise 2ml of monoethanolamine [HO(CH 2 ) 2 NH 2 ], after continuing to stir for 2h, a light yellow transparent solution was obtained, which was 0.3mol L -1 ZnO sol, the ZnO sol was left standing for 7 days to obtain light yellow transparent ZnO gel;

[0048] The ZnO seed layer was prepared by the dipping and pulling method, that is, the ZnO seed layer was plated on the conductive glass at a speed of 1mm / s, dried at 80°C, and dried at 80°C for 1h after two layers were plated in the same way; The ZnO seed layer was heated at 2°C / min to 200°C for 30 minutes, and then continued to heat up to 450°C for 1 hour to obtain the ZnO seed layer;

[0049] The hydrothermal method was used in the growth solution (the growth solution was 0.05mol L -1 zinc nitrate and ...

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Abstract

The invention discloses a preparation method of a ZnO-CuO-FeOOH composite film for photoelectric catalysis hydrogen production. Firstly, ZnO solution is prepared, a ZnO seed layer is prepared by a dip-coating method, and a ZnO nano-rod film grows by a hydrothermal method. Secondly, a copper-based film is prepared on the ZnO nano-rod film by an electro-deposition method, and a CuO film is obtainedby heat oxidation. Finally, a FeOOH film is prepared on the ZnO-CuO film by the electro-deposition method to obtain the ZnO-CuO-FeOOH composite film. After various tests for the obtained ZnO-CuO-FeOOHcomposite film, light absorption of ZnO is improved, and photoelectric catalysis hydrogen production performance is improved. The preparation method is simple and easy to operate and has practical feasibility, and the prepared ZnO-CuO-FeOOH composite film is low in cost, free from pollution and good in photoelectric catalysis hydrogen production performance.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a preparation method of a ZnO-CuO-FeOOH composite thin film for photoelectric catalytic hydrogen production. Background technique [0002] In order to realize the sustainable development of society, hydrogen energy has been developed as a next-generation energy due to its advantages of cleanness, environmental protection and easy storage, aiming to solve imminent energy and environmental problems. It is worth noting that photoelectrocatalytic water splitting to generate hydrogen is a preferred route for hydrogen production. Solar energy is inexhaustible and has become an energy object that is extensively studied and utilized. The semiconductor catalytic material absorbs solar photon energy, undergoes a photo-generated electronic transition, reaches the surface of the semiconductor material and contacts water, and begins to decompose water to generate hyd...

Claims

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Application Information

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IPC IPC(8): B01J23/80C25B11/06C25B1/04
CPCY02E60/36
Inventor 刘志锋鲁雪
Owner TIANJIN CHENGJIAN UNIV
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