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cds/in2s3/cos composite photocatalyst and preparation method thereof

A composite light and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low catalyst activity and low hydrogen production rate, and achieve good catalyst activity and low reaction temperature , the effect of low reaction pressure

Inactive Publication Date: 2011-12-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the existing problem of utilizing light to decompose H 2 The catalyst activity of O hydrogen production is low, and the hydrogen production rate is low under visible light. Provide CdS / In 2 S 3 / CoS composite photocatalyst and preparation method thereof

Method used

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  • cds/in2s3/cos composite photocatalyst and preparation method thereof
  • cds/in2s3/cos composite photocatalyst and preparation method thereof

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specific Embodiment approach 1

[0011] Specific implementation mode 1: this implementation mode CdS / In 2 S 3 / CoS composite photocatalyst is composed of Cd(Ac) 2 2H 2 O, Co(Ac) 2 4H 2 O, InCl 3 4H 2 Made from O and thioacetamide; where Cd(Ac) 2 2H 2 O and InCl 3 4H 2 The molar ratio of O is 3:0.1~1, Cd(Ac) 2 2H 2 O and Co(Ac) 2 4H 2 The molar ratio of O is 3:0.01~1, Cd(Ac) 2 2H 2 The molar ratio of O to thioacetamide is 1:3-12.

[0012] CdS / In of the present embodiment 2 S 3 The particle size of the / CoS composite photocatalyst is about 500nm, and it is self-assembled by many small particles with a particle size of 10-20nm, and its hydrogen production rate can reach 2-4mmol / h.

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and specific embodiment one is: Cd(Ac) 2 2H 2 O and InCl 3 4H 2 The molar ratio of O is 3:0.1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one is: Cd(Ac) 2 2H 2 O and InCl 3 4H 2 The molar ratio of O is 3:1. Others are the same as in the first embodiment.

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Abstract

The invention discloses a CdS / In2S3 / CoS composite photocatalyst and a preparation method thereof, relating to a photocatalytic material and a preparation method thereof. The invention aims to solve the problems of low activity of existing catalysts for hydrogen production by photolysis of H2O and low hydrogen production rate under visible light. The composite photocatalyst is made of Cd(Ac)2·2H2O, Co(Ac)2·4H2O, InCl3·4H2O and thioacetamide. Method: Add Cd(Ac)2·2H2O, Co(Ac)2·4H2O, InCl3·4H2O and thioacetamide to acetone or absolute ethanol; seal it and put it into an ultrasonic reactor for reaction; the product is cooled to room temperature , washed with absolute ethanol, and dried to obtain a composite photocatalyst. The particle diameter of the composite photocatalyst of the invention is about 500nm, the hydrogen production rate is high, the catalyst activity is good, no noble metal needs to be loaded, and the powder particles are uniform and high in purity. Applied in the field of photocatalytic materials.

Description

technical field [0001] The invention relates to a photocatalytic material and a preparation method thereof. Background technique [0002] In today's world, countries have paid great attention to energy issues and environmental issues. With the rapid development of society and economy, human's demand for non-renewable resources is increasing day by day, and fossil fuels can no longer meet people's demand for energy. The over-exploitation of nature by humans has caused serious environmental pollution and environmental damage. At the same time, the "greenhouse effect" caused by greenhouse gases such as carbon dioxide produced by burning fossil fuels is also becoming more and more serious. The development of clean and efficient new energy is imminent and urgent. [0003] Therefore, the development of new renewable clean energy is a hot spot of current research. h 2 High combustion value, non-toxic and odorless, the product is environmentally friendly, and it is a renewable en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043C01B3/04
CPCY02E60/364Y02E60/36
Inventor 陈刚申造宇于耀光孙静雪
Owner HARBIN INST OF TECH
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