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Photocatalytic hydrogen production catalyst and preparation method thereof

A catalyst and photocatalysis technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical instruments and methods, etc., to achieve the effects of good stability, simple preparation method and good photocatalytic hydrogen production activity

Active Publication Date: 2017-09-22
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant data, it has been proved that so far, non-metallic carbon doping modification and narrow bandgap semiconductor (MoS 2 ) modification to improve the photocatalytic photocatalytic hydrogen production performance of potassium niobate, which has not been reported at home and abroad.

Method used

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  • Photocatalytic hydrogen production catalyst and preparation method thereof
  • Photocatalytic hydrogen production catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) 5.3126g niobium pentoxide and 3.69g glucose (n 五氧化二铌 :n 葡萄糖 =1:1) Grind in a mortar for 30min, then add the ground mixture into 70ml of 14M potassium hydroxide solution and stir for 1h, then transfer the mixed solution to a 100ml polytetrafluoroethylene reactor, and conduct a hydrothermal reaction at 160°C 12h, then cooled to room temperature. The final product was washed with alcohol and water, and dried at 60°C for 24 hours to obtain carbon-doped potassium niobate (C-KNbO 3 );

[0021] 2) Weigh 0.5g of carbon-doped potassium niobate, 0.0034g of sodium molybdate and 0.0068g of thiourea respectively, disperse them in 70ml of deionized water, stir for 30min, then ultrasonicate for 30min, then transfer the mixture to 100ml polytetrafluoroethylene In a vinyl fluoride reactor, hydrothermally react at 200°C for 24h, and then cool to room temperature. The final product was washed with alcohol and water, and dried at 60°C for 24 hours to obtain MoS with a molar ratio of...

Embodiment 2

[0024] 1) with the step of (1) in embodiment 1;

[0025] 2) Weigh 0.5g of carbon-doped potassium niobate, 0.0014g of sodium molybdate and 0.0028g of thiourea respectively, disperse them in 70ml of deionized water, first stir for 30min, then ultrasonicate for 30min, then transfer the mixture to 100ml polytetrafluoroethylene In a vinyl fluoride reactor, hydrothermally react at 200°C for 24h, and then cool to room temperature. The final product was washed with alcohol and water, and dried at 60°C for 24 hours to obtain MoS with a molar ratio of 0.002 2 / C-KNbO 3 .

[0026] Photocatalytic hydrogen production activity see figure 1 in A2.

Embodiment 3

[0028] 1) with the step of (1) in embodiment 1;

[0029] 2) Weigh 0.5g of carbon-doped potassium niobate, 0.0007g of sodium molybdate and 0.0014g of thiourea respectively, disperse them in 70ml of deionized water, stir for 30min, then ultrasonicate for 30min, then transfer the mixture to 100ml of polytetrafluoroethylene In a vinyl fluoride reactor, hydrothermally react at 200°C for 24h, and then cool to room temperature. The final product was washed with alcohol and water, and dried at 60°C for 24 hours to obtain MoS with a molar ratio of 0.001 2 / C-KNbO 3 .

[0030] Photocatalytic hydrogen production activity see figure 1 in A3.

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Abstract

The invention discloses a photocatalytic hydrogen production catalyst and a preparation method thereof. The catalyst is molybdenum disulfide composite carbon-doped potassium niobate, the chemical composition formula of the catalyst is xMoS2 / C-KNbO3, x refers to the molar ratio of molybdenum disulfide to potassium niobate, C-KNbO3 refers to carbon-doped potassium niobate, and 0.001<=x<=0.01. Firstly, niobium pentoxide, glucose and potassium hydroxide are used for preparing the carbon-doped potassium niobate. Secondly, the carbon-doped potassium niobate, sodium molybdate and thiourea are used for preparing the molybdenum disulfide composite carbon-doped potassium niobate. The catalyst has efficient photocatalytic hydrogen production performance and good stability.

Description

technical field [0001] The invention relates to the technical field of photocatalytic hydrogen production materials, and more specifically relates to a photocatalytic hydrogen production catalyst and a preparation method thereof. Background technique [0002] Energy is an important material basis for the survival and development of human society. At present, the energy used by human beings is mainly fossil-based non-renewable energy. According to speculation, fossil energy such as oil, natural gas, and coal will be exhausted before 2050. At the same time, the SO produced during the use of fossil energy 2 , CO 2 Harmful gases such as harmful gases have caused a series of environmental problems such as acid rain and the greenhouse effect, and energy problems have become a huge obstacle to social development. Therefore, in order to realize the sustainable development of society, the development of clean, efficient and renewable new energy is imminent. [0003] Hydrogen energ...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J37/10C01B3/04
CPCC01B3/042B01J27/051B01J37/10B01J35/39Y02E60/36
Inventor 何益明余竞雄陈志强
Owner ZHEJIANG NORMAL UNIVERSITY
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