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Silver sulfide/zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity and preparation method thereof

A compound semiconductor and catalytic activity technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of long degradation reaction time, poor catalyst stability, complicated preparation methods, etc., and achieve excellent stability properties, enhanced effective compounding, and simple preparation process

Inactive Publication Date: 2012-10-10
HARBIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention solves the problems of complex preparation methods, high production cost, long degradation reaction time and poor catalyst stability in existing ZnS composite photocatalysts, and provides a silver sulfide / zinc sulfide composite semiconductor photocatalyst with ultraviolet photocatalytic activity and its preparation method

Method used

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  • Silver sulfide/zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity and preparation method thereof
  • Silver sulfide/zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity and preparation method thereof
  • Silver sulfide/zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity and preparation method thereof

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specific Embodiment approach 1

[0014] Specific embodiment one: This embodiment is a silver sulfide / zinc sulfide composite semiconductor photocatalyst with ultraviolet photocatalytic activity. The silver sulfide / zinc sulfide composite semiconductor photocatalyst with ultraviolet photocatalytic activity is composed of ZnS powder, deionized water, AgNO 3 and cetyltrimethylammonium bromide; the mass of the ZnS powder and the volume ratio of deionized water are 1g: (250mL ~ 1000mL); the ZnS and AgNO 3 Mass ratio is (1~20):1; The mass ratio of described ZnS and hexadecyltrimethylammonium bromide is 1:(4×10 -2 ~16×10 -2 ).

specific Embodiment approach 2

[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the volume ratio of the ZnS powder to deionized water is 1g:(400mL~800mL). Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ZnS and AgNO 3 The mass ratio is (5~15):1. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a compound semiconductor photocatalyst and a preparation method thereof, and particularly relates to a silver sulfide / zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity and a preparation method thereof. The invention aims at solving the problems of complex preparation method, high production cost, long degradation reaction time and poor catalyst stability of a conventional ZnS compound photocatalyst. The silver sulfide / zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity is prepared by ZnS powder, deionized water, AgNO3 and hexadecyl trimethyl ammonium bromide. The method comprises the following steps: firstly, mixing the ZnS powder, deionized water, AgNO3 and hexadecyl trimethyl ammonium bromide to obtain gray black solution; secondly, heating at constant temperature for reaction; and thirdly, obtaining the silver sulfide / zinc sulfide compound semiconductor photocatalyst with ultraviolet light catalytic activity through filtering and drying. The preparation method is mainly used for preparing the silver sulfide / zinc sulfide compound semiconductor photocatalyst.

Description

technical field [0001] The invention relates to a composite semiconductor photocatalyst and a preparation method thereof. Background technique [0002] In recent years, with the increasingly serious pollution of the ecological environment caused by the discharge of organic wastewater from human production and life, the research work on semiconductor photocatalytic purification of the environment has attracted more and more attention from researchers. In practical applications, semiconductor photocatalysts also have the following disadvantages: (1) The recombination rate of photogenerated carriers is high, and the photocatalytic efficiency is low. (2) The stability of the photocatalyst is poor, and the reuse rate is low. The above two shortcomings restrict the popularization and application of semiconductor photocatalysts in practice. Composite semiconductor photocatalyst is an effective way to effectively suppress the recombination of photogenerated carriers. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04
Inventor 徐玲玲魏波张海霖朱琳于佳会
Owner HARBIN NORMAL UNIVERSITY
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