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Method for preparing zinc tungstate photoelectrode as well as application

A photoelectrode, zinc tungstate technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of complex methods and difficult control.

Inactive Publication Date: 2019-12-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation methods are complex and difficult to control

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  • Method for preparing zinc tungstate photoelectrode as well as application
  • Method for preparing zinc tungstate photoelectrode as well as application
  • Method for preparing zinc tungstate photoelectrode as well as application

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Embodiment Construction

[0017] The present invention will be described in further detail below through specific examples. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. At the same time, it is pointed out here that for those of ordinary skill in the art, the optimal data in the present invention is only for the present invention, and reasonable adjustments and improvements all belong to the protection scope of the present invention without departing from the concept of the present invention.

[0018] The preparation of the zinc tungstate photoelectrode comprises the following steps: the zinc salt is one of zinc chloride and zinc acetate; the organic solvent is one of methanol and ethanol; the zinc salt and tungstate The molar ratio is 12:1; the amount of organic solvent is 100±10ml. In an organic solvent, the zinc salt and tungstate are fully mixed to obtain a mixed solution; the mixed solutio...

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Abstract

The invention discloses a method for preparing a zinc tungstate photoelectrode. The method adopts a spray thermal decomposition method and comprises the following steps: weighing zinc salt and ammonium tungstate, adding the zinc salt and the ammonium tungstate into an organic solvent, and spray-coating a conductive lining on a high-temperature heat platform with the mixed solution by a spraying method; and performing treatment on the obtained conductive lining after performing high-temperature heating to obtain the ZnWO4 photoelectrode, wherein the zinc salt is one of zinc chloride and zinc acetate, the organic solvent is one of methanol and ethanol, and the molar ratio of the zinc salt to the ammonium tungstate is (10-14):1; the conductive lining on the heat platform is spray-coated withthe mixed solution by a spraying device, the whole spray-coating process continues for 60+ / -30 minutes, and the temperature of the conductive lining on the heat platform is controlled to 400+ / -100 DEGC; and the conductive lining is placed into a high-temperature furnace to fire at 600+ / -50 DEG C, the conductive lining is fired for 10 minutes after the temperature is increased to 700+ / -50 DEG C, the conductive lining is taken out after being cooled naturally, and the target material is prepared.

Description

technical field [0001] The invention relates to a method for preparing zinc tungstate (ZnWO 4 ) method and application of photoelectrode. Background technique [0002] Fossil fuels, which are commonly used by human society at present, are facing a shortage of reserves. The use of fossil fuels will also cause serious environmental pollution problems. Facing the problems of insufficient reserves and environmental pollution in the energy field, solar energy is an excellent solution. Solar energy is inexhaustible, clean and pollution-free. The ideal conversion target of solar energy is hydrogen energy with high energy density and compressible storage. Photoelectrochemical water splitting technology is a technology that converts solar energy into hydrogen energy. This technology uses semiconductor materials to convert water into hydrogen by using sunlight. The semiconductor material in it is the key to energy conversion. How to prepare excellent semiconductor materials to a...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/06C23C18/12
CPCC25B1/04C23C18/1216C23C18/1258C25B1/55C25B11/077Y02E60/36
Inventor 李朝升杨帅祝梅邹志刚
Owner NANJING UNIV