Photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as preparation method thereof

A catalyst and organic technology, which is applied in the field of photocatalytic degradation of organic pollutants catalyst TiO2/Co4S4.23Se3.77 and its preparation, can solve the problems of difficult recovery, harsh preparation conditions, low utilization rate of visible light, etc., and achieves good adsorption and degradation. effect, good catalytic effect

Inactive Publication Date: 2014-05-21
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this photocatalyst is not ideal in practical applications, and has disadvantages such as low utilization rate of visible light, difficult recovery, harsh preparation conditions, and easy recombination of photogenerated electrons and holes.

Method used

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  • Photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as preparation method thereof
  • Photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as preparation method thereof
  • Photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] 1. Compound Co 4 S 4.23 Se 3.77 Synthesis

[0018] Synthetic Co 4 S 4.23 Se 3.77: Weigh 235.7 mg of cobalt element, 136.3 mg of sulfur element and 296.1 mg of selenium element for mixed grinding, press into a quartz glass tube with a diameter of about 10 mm and a length of about 100 mm, and vacuumize to about 1 × 10 –2 Pa, seal the tube with a hydrogen flame. Then the quartz tube is put into a box-type resistance furnace, and the temperature is controlled by an automatic temperature controller, and the room temperature is raised to 850° C. with a heating rate of 30° C. / hour. The temperature was lowered to 100 °C and finally the temperature was lowered to room temperature within 5 hours. Open the quartz tube to get Co 4 S 4.23 Se 3.77 .

[0019] 2. Catalyst 10%TiO 2 / Co 4 S 4.23 Se 3.77 Synthesis

[0020] According to titanium dioxide (TiO 2 ) and cobalt sulfoselenide (Co 4 S 4.23 Se 3.77 ) with a mass ratio of 1:10, first weigh 0.1667 g of Co 4 S...

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Abstract

The invention discloses a photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as a preparation method thereof. Under the induction of visible light, 0.05g of catalyst 30%TiO2/Co4S4.23Se3.77 can adsorb 87% of 50ml of methylthionine chloride with the concentration of 10mg/L in dark reaction for 30 minutes, and the methylthionine chloride can be degraded completely in the radiation by visible light within 40 minutes. The photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as the preparation method thereof, which are provided by the invention, have the advantages that a heterojunction photocatalyst is synthesized by a new method combining a high-temperature solid phase synthesis method with a sol-gel method, is simple in operation, is low in production cost, is high in synthesis yield and purity, and meets the requirement of expanded production.

Description

technical field [0001] The invention relates to a novel photocatalytic degradation of organic pollutants catalyst TiO 2 / Co 4 S 4.23 Se 3.77 and its preparation method. Background technique [0002] With the development of society and the improvement of people's living standards, industrial wastewater and domestic sewage account for an important part of environmental pollution and become an important issue that people have to consider. In 1972, Fujishima and Honda adopted TiO 2 The electrode, which splits water upon exposure to light, marks the beginning of a new era in photocatalysis. Subsequently, Carey et al. used ultraviolet light to irradiate TiO 2 The aqueous solutions of polychlorinated biphenyls and chlorinated alkanes in the presence of photocatalysts can undergo effective dechlorination reactions, which makes it possible to photocatalytically degrade organic matter. [0003] Due to TiO 2 It is widely used in various fields of photocatalysis research due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J20/06C02F1/28C02F1/30
Inventor 邹建平蔺万峰冷乐辉罗胜联李末霞陈贵祥钟丽郝慧玲
Owner NANCHANG HANGKONG UNIVERSITY
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