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Tungsten carbide-titanium dioxide composite photocatalysis material and preparation method thereof

A technology of composite photocatalysis and titanium dioxide, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low photocatalytic efficiency of catalysts, and achieves low price, easy availability of raw materials, and simple process. Effect

Inactive Publication Date: 2012-09-12
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Solved the problem of low photocatalytic efficiency of the catalyst

Method used

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  • Tungsten carbide-titanium dioxide composite photocatalysis material and preparation method thereof
  • Tungsten carbide-titanium dioxide composite photocatalysis material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 (0.25wt%WC-TiO 2 ):

[0019] Grind 1.5312g of titanium dioxide and 0.0041g of tungsten carbide, respectively, and pass through a 200-mesh sieve, then put the ground titanium dioxide and tungsten carbide into a mortar to continue grinding, mix well and sieving, the obtained tungsten carbide and titanium dioxide composite photocatalysis The material is named 0.25wt%WC-TiO 2 .

[0020] It is also possible to directly put 1.5312g of titanium dioxide and 0.0041g of tungsten carbide into a mortar and grind them, mix them thoroughly, and then pass through a 200-mesh sieve to obtain a composite photocatalytic material of tungsten carbide and titanium dioxide.

[0021] Degussa P25 can be used for titanium dioxide.

Embodiment 2

[0022] Example 2 (0.75wt%WC-TiO 2 ):

[0023] Similar to Example 1, the difference is that titanium dioxide is 1.5327g, tungsten carbide is 0.0115g, and the obtained tungsten carbide and titanium dioxide composite photocatalytic material is named 0.75wt%WC-TiO 2 .

Embodiment 3

[0024] Example 3 (1.0wt%WC-TiO 2 ):

[0025] Similar to Example 1, the difference is that titanium dioxide is 1.5311g, tungsten carbide is 0.0156g, and the obtained tungsten carbide and titanium dioxide composite photocatalytic material is named 1.0wt% WC-TiO 2 .

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Abstract

The invention discloses a tungsten carbide-titanium dioxide composite photocatalysis material and a preparation method thereof, which relate to a photocatalysis material and a preparation method thereof. The tungsten carbide-titanium dioxide composite photocatalysis material consists of tungsten carbide and titanium dioxide in the mass ratio of (0.0025-0.1):1. The preparation method comprises the following steps of: mixing tungsten carbide and titanium dioxide in a certain mixture ratio; and grinding to obtain the tungsten carbide-titanium dioxide composite photocatalysis material. Tungsten carbide which is low in cost instead of a precious metal Pt is compounded with titanium dioxide, so that the tungsten carbide-titanium dioxide composite photocatalysis material has the advantages of low price, readily-available raw materials, and the like. Tungsten carbide and titanium dioxide are mixed fully by reacting with a full grinding method, so that a process is simple.

Description

Technical field [0001] The invention relates to a photocatalytic material and a preparation method thereof. Background technique [0002] With the rapid development of global society and economy, the demand for energy and resources is increasing. Increasingly prominent global issues such as the exhaustion of fossil energy, environmental pollution and the greenhouse effect have prompted people to increase their attention and investment in the search for renewable clean energy. As a clean renewable energy, hydrogen energy has the advantages of high combustion value, pollution-free, convenient storage and transportation, etc. The use of huge, non-polluting solar energy photocatalytic decomposition of water to produce hydrogen provides an ideal way to solve this problem. Current hotspot of scientific research. [0003] Currently, the catalytic materials that can be used for photocatalytic hydrogen production mainly include semiconductors such as oxides, sulfides, nitrides, titanates,...

Claims

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Application Information

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IPC IPC(8): B01J27/22C01B3/04
CPCY02E60/36
Inventor 林敬东黄勤栋崔云鹤闫石廖代伟
Owner XIAMEN UNIV
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