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Photocatalytic full-water-splitting cocatalyst, photocatalyst and preparation method thereof

A photocatalyst and co-catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effect of easy availability of raw materials

Active Publication Date: 2021-07-09
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, many cocatalyst materials often fail to produce ideal effects in the total water splitting reaction because they cannot effectively inhibit the reverse reaction.

Method used

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  • Photocatalytic full-water-splitting cocatalyst, photocatalyst and preparation method thereof
  • Photocatalytic full-water-splitting cocatalyst, photocatalyst and preparation method thereof
  • Photocatalytic full-water-splitting cocatalyst, photocatalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Preparation of photocatalyst system:

[0031] 1) Preparation of semiconductor powder photocatalyst: 2g of strontium titanate was weighed, and 30g of strontium chloride hexahydrate and 0.01g of nano-alumina were added thereto, and the mixture powder was added into an agate mortar and thoroughly ground. After mixing, the mixed powder was added to an alumina crucible with a capacity of 100 ml. The mixed powder was sintered in Tianjin Zhonghuan FURNACE 1600°C, model SX-G03163 energy-saving box-type electric furnace. The sintering condition is calcination at 1100°C for 10h in air. After the program is finished, the obtained powder is washed with water until no AgCl precipitation is detected with a silver nitrate solution, and dried overnight to obtain a strontium titanate semiconductor powder photocatalyst for use.

[0032] 2) Preparation of semiconductor powder photocatalyst loaded with platinum nanoparticles:

[0033] Prepared by impregnation method: according to the ma...

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Abstract

The invention belongs to the technical field of photocatalytic water decomposition, and particularly relates to a photocatalytic full-water-splitting cocatalyst which comprises metal nanoparticles with the performance of catalyzing carbon graphitization and a graphite-phase carbon cage thin layer coating the surfaces of the metal nanoparticles. In addition, the invention also relates to a photocatalyst which comprises a semiconductor powder photocatalyst and a cocatalyst loaded on the semiconductor powder photocatalyst, and the cocatalyst is the photocatalytic full-water-splitting cocatalyst. In addition, the invention also relates to a preparation method of the photocatalyst. Compared with the prior art, the catalytic effect on the reverse reaction is inhibited on the basis of not influencing the acceleration of the positive reaction.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic water splitting, and in particular relates to a photocatalytic total water splitting co-catalyst, a photocatalyst and a preparation method thereof. Background technique [0002] Photocatalytic water splitting is a very potential technical means to solve today's energy and environmental problems. Semiconductors represented by materials such as strontium titanate, titanium dioxide, and gallium oxide, because of their suitable energy band structure, can generate holes and electrons with sufficient redox ability under the irradiation of ultraviolet light, so they can directly decompose water for hydrogen and oxygen. [0003] In addition to semiconductor materials, co-catalysts are also the key to affect the activity of photocatalysts for total water splitting. Previous studies have shown that the presence of co-catalysts can provide surface reaction sites for photocatalytic reactions, and cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/00B01J23/42
CPCB01J23/00B01J23/42B01J35/396B01J35/39Y02E60/36
Inventor 刘乐全杨昕旻崔记伟
Owner TIANJIN UNIV
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