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Composite photocatalyst and preparation method thereof

A catalyst and composite light technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low hydrogen production catalyst activity, low hydrogen production rate, etc., and achieve simple installation and low price. , the effect of high catalytic activity

Inactive Publication Date: 2011-04-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to solve the existing problem of utilizing light to decompose H 2 Due to the low activity of O hydrogen production catalyst and low hydrogen production rate under visible light, a composite photocatalyst and its preparation method are provided

Method used

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  • Composite photocatalyst and preparation method thereof
  • Composite photocatalyst and preparation method thereof
  • Composite photocatalyst and preparation method thereof

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specific Embodiment approach 1

[0016] Specific implementation mode one: the composite photocatalyst of this implementation mode is made of Zn(Ac) 2 2H 2 O, Cd(Ac) 2 2H 2 O, made from the third main group compound and thioacetamide; Zn(Ac) 2 2H 2 O and Cd(Ac) 2 2H 2 The molar ratio of O is 1:1~5, Zn(Ac) 2 2H 2 The molar ratio of O to the third main group compound is 1:0.01~0.10, Zn(Ac) 2 2H 2 The molar ratio of O to thioacetamide is 1:4.03~12.30; the third main group compound is InCl 3 4H 2 O or GaCl 3 .

specific Embodiment approach 2

[0017] Specific embodiment two: the preparation method of composite photocatalyst of this embodiment realizes according to the following steps: one, weigh Zn (Ac) 2 2H 2 O, Cd(Ac) 2 2H 2 O, the third main group compound and thioacetamide, Zn(Ac) 2 2H 2 O and Cd(Ac) 2 2H 2 The molar ratio of O is 1:1~5, Zn(Ac) 2 2H 2 The molar ratio of O to the third main group compound is 1:0.01~0.1, Zn(Ac) 2 2H 2 The molar ratio of O to thioacetamide is 1:4.03~12.30, and then they are added to 5~20mL of acetone or ethanol solution to form a mixture; 2. Seal the mixture obtained in step 1 and put it into an ultrasonic reactor , react at 40-80°C for 0.5-18h; 3. Cool the product obtained in step 2 to room temperature, wash it with absolute ethanol for 2-5 times, and then dry it in an oven at 50°C for 0.5-5h to obtain Composite photocatalyst; wherein the third main group compound in step 1 is InCl 3 4H 2 O or GaCl 3 .

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiment two is that in step one, Zn(Ac) 2 2H 2 O, Cd(Ac) 2 2H 2 O, add the third main group compound and thioacetamide to 7-10mL of acetone or ethanol solution. Others are the same as in the second embodiment.

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Abstract

The invention discloses a composite photocatalyst and a preparation method thereof, relating to a photocatalyst material and a preparation method thereof. In the invention, the problems of low catalyst activity and low hydrogen yield under the visible light caused by producing the hydrogen by the photolysis of the water in the prior art, are solved. The composite photocatalyst is prepared from Zn(Ac)2*2H2O, Cd(Ac)2*2H2O, IIIA compound and thioacetamide. The preparation method comprises the following steps: 1, weighting the Zn(Ac)2*2H2O, the Cd(Ac)2*2H2O, the thioacetamide and the IIIA compound, adding the materials into the solution of acetone or alcohol for mixing; 2, carrying out ultrasonic reaction on the mixture; and 3, cooling, washing and drying the product to obtain the final composite photocatalyst powder. The invention has low raw material price, low reaction temperature, low reaction pressure, simple device and is simple in operation. The composite photocatalyst prepared has high hydrogen production rate, good catalyst activity, and no need of noble metal loading. The material powder has uniform particles and high purity, and can be used in the technical field of the scale hydrogen production.

Description

technical field [0001] The invention relates to a catalyst 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 demand for non-renewable resources is increasing day by day. Fossil fuels can no longer meet people's demand for energy. With the continuous and high-speed consumption of human beings, they will eventually be exhausted in the near future. . Due to the over-exploitation of nature by human beings, serious environmental pollution and environmental damage have been caused. 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...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/08C01B3/04
CPCY02E60/364Y02E60/36
Inventor 陈刚申造宇于耀光周超
Owner HARBIN INST OF TECH
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