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A ternary heterojunction photodegradation organic matter catalyst ws2-bi2wo6/bi3.84w0.16o6.24 and its preparation method

A catalyst and photodegradation technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low solar energy utilization rate and affecting photocatalytic reaction efficiency, etc., and achieve low production cost and good Photocatalytic degradation of organic effect, good thermal stability

Inactive Publication Date: 2015-12-02
NANCHANG HANGKONG UNIVERSITY
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  • Application Information

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Problems solved by technology

[0003] As we all know, ultraviolet light accounts for less than 5% of the total energy of sunlight, and the absorption range of semiconductor photocatalysts is still mostly in the ultraviolet region, and the utilization rate of solar energy is low, which directly affects the efficiency of photocatalytic reactions.

Method used

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  • A ternary heterojunction photodegradation organic matter catalyst ws2-bi2wo6/bi3.84w0.16o6.24 and its preparation method
  • A ternary heterojunction photodegradation organic matter catalyst ws2-bi2wo6/bi3.84w0.16o6.24 and its preparation method
  • A ternary heterojunction photodegradation organic matter catalyst ws2-bi2wo6/bi3.84w0.16o6.24 and its preparation method

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Embodiment Construction

[0018] The present invention works and implements like this, and catalyst material WS of the present invention 2 -Bi 2 WO 6 / Bi 3.84 W 0.16 o 6.24 Synthesis of tungsten disulfide: Firstly, the bulk structure of tungsten disulfide is dispersed in N-methyl-2-pyrrolidone by the solvent ultrasonic stripping method, and the layered tungsten disulfide dispersion is obtained by ultrasonication, and then subjected to vacuum distillation, centrifugal washing, and freezing Vacuum drying to obtain layered tungsten disulfide powder. Then, 30 mg of layered tungsten disulfide was dispersed in a mixed solution containing 30 ml of deionized water and 10 ml of absolute ethanol, and ultrasonicated for 30 minutes to obtain a tungsten disulfide suspension. Disperse 0.86 mmol of bismuth nitrate evenly into 5 ml of 1 mol / L nitric acid solution, slowly add it to the above-mentioned tungsten disulfide suspension, and stir thoroughly for 3 hours to obtain solution A. Then, 10 milliliters of ammo...

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Abstract

The invention discloses ternary hetero-structured photo-degradation organic catalyst WS2-Bi2WO6 / Bi3.84W0.16O6.24 and a preparation method thereof. The ternary hetero-structured photo-degradation organic catalyst WS2-Bi2WO6 / Bi3.84W0.16O6.24 is characterized in that the catalyst is obtained through stratiform tungsten disulfide loaded on two bismuth tungstate of different structures, 100 ml of rhodamine B with the concentration of 10<-4>mol / L can be completely degraded by 0.1 g of the catalyst in one hour. According to the invention, the ternary hetero-structure photo-degradation organic catalyst WS2-Bi2WO6 / Bi3.84W0.16O6.24 and the preparation method thereof have the following advantages: 1. graphene type stratiform tungsten disulfide is firstly reported as the substrate materials of the catalysts, and the catalyst is a photo-degradation organic catalyst that has a ternary hetero-structure; 2. the catalyst is directly synthesized by adopting the single-step hydrothermal method, and is simple in operation, low in production cost, high in synthetic yield and purity, good in repeatability and suitable for requirements of expanded production.

Description

technical field [0001] The invention relates to a ternary heterojunction photodegradation organic matter catalyst, in particular to a ternary heterojunction photodegradation organic matter catalyst WS 2 -Bi 2 WO 6 / Bi 3.84 W 0.16 o 6.24 and its preparation method. Background technique [0002] With the rapid development of today's society and even countries around the world, the continuous progress of science and technology, industry and agriculture, and the improvement of people's quality of life, energy crisis and environmental pollution have become two major global issues. At present, for the treatment of these refractory organic pollutants, the traditional treatment technologies mainly include chemical oxidation, physical adsorption, biological treatment and membrane separation, etc., but these technologies exist to varying degrees, or the efficiency is low, and the pollutants cannot be removed. Completely harmless, easy to produce secondary pollution, or the scope...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/047
Inventor 邢秋菊马俊雷晓芳余建黄琼邹建平陈五花袁忠强潘先惠
Owner NANCHANG HANGKONG UNIVERSITY
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