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Preparation method of zinc cadmium sulfide/bismuth oxybromide composite visible light catalyst

A technology of bismuth oxybromide and zinc cadmium sulfide is applied in the field of preparation of zinc cadmium sulfide/bismuth oxybromide composite visible light catalyst, and can solve the problems of reducing the photocatalytic efficiency of bismuth oxybromide, narrow absorption range, easy recombination of photogenerated charges, etc. The effect of short degradation time, simple operation and low cost

Inactive Publication Date: 2019-03-29
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of bismuth oxybromide, such as narrow light absorption range and easy recombination of photogenerated charge-holes, seriously reduce the photocatalytic efficiency of bismuth oxybromide.

Method used

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  • Preparation method of zinc cadmium sulfide/bismuth oxybromide composite visible light catalyst
  • Preparation method of zinc cadmium sulfide/bismuth oxybromide composite visible light catalyst
  • Preparation method of zinc cadmium sulfide/bismuth oxybromide composite visible light catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0020] (1) Preparation of zinc cadmium sulfide: Measure 5mL of distilled water and add 1.4875g of zinc nitrate hexahydrate and 1.5425g of cadmium nitrate tetrahydrate at the same time, stir for 0.5h, add dropwise 10ml of sodium hydroxide solution (2.4006g), stir 0.5h, then add 1.5224g of thiourea to the above solution, transfer the reactant to a hydrothermal reaction kettle, react at 180°C for 12h, cool, centrifuge, wash, and dry;

[0021] (2) Preparation of bismuth oxybromide: Measure 60mL of distilled water and add 1.9404g of bismuth nitrate pentahydrate and 0.4116g of sodium bromide at the same time, stir for 0.5h, transfer the reactants to a hydrothermal reaction kettle, and react at 160°C for 24h , cooling, centrifugation, washing, drying;

[0022] (3) Preparation of zinc cadmium sulfide / bismuth oxybromide composite photocatalyst: add 0.1g bismuth oxybromide and 0.14g zinc cadmium sulfide to 10mL distilled water respectively, ultrasonication for 0.5h each, then add zinc c...

Embodiment 2

[0024] (1) Preparation of zinc cadmium sulfide: Measure 5mL of distilled water and add 1.4875g of zinc nitrate hexahydrate and 1.5425g of cadmium nitrate tetrahydrate at the same time, stir for 0.5h, add dropwise 10ml of sodium hydroxide solution (2.4006g), stir 0.5h, then add 1.5224g of thiourea to the above solution, transfer the reactant to a hydrothermal reaction kettle, react at 180°C for 12h, cool, centrifuge, wash, and dry;

[0025] (2) Preparation of bismuth oxybromide: Measure 60mL of distilled water and add 1.9404g of bismuth nitrate pentahydrate and 0.4116g of sodium bromide at the same time, stir for 0.5h, transfer the reactants to a hydrothermal reaction kettle, and react at 160°C for 24h , cooling, centrifugation, washing, drying;

[0026] (3) Preparation of zinc cadmium sulfide / bismuth oxybromide composite photocatalyst: Add 0.1g bismuth oxybromide and 0.16g zinc cadmium sulfide to 10mL distilled water respectively, ultrasonication for 0.5h each, then add zinc c...

Embodiment 3

[0028] (1) Preparation of zinc cadmium sulfide: Measure 5mL of distilled water and add 1.4875g of zinc nitrate hexahydrate and 1.5425g of cadmium nitrate tetrahydrate at the same time, stir for 0.5h, add dropwise 10ml of sodium hydroxide solution (2.4006g), stir 0.5h, then add 1.5224g of thiourea to the above solution, transfer the reactant to a hydrothermal reaction kettle, react at 180°C for 12h, cool, centrifuge, wash, and dry;

[0029] (2) Preparation of bismuth oxybromide: Measure 60mL of distilled water and add 1.9404g of bismuth nitrate pentahydrate and 0.4116g of sodium bromide at the same time, stir for 0.5h, transfer the reactants to a hydrothermal reaction kettle, and react at 160°C for 24h , cooling, centrifugation, washing, drying;

[0030] (3) Preparation of zinc cadmium sulfide / bismuth oxybromide composite photocatalyst: add 0.1g bismuth oxybromide and 0.18g zinc cadmium sulfide to 10mL distilled water, respectively, ultrasonication for 0.5h, then add zinc cadmi...

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Abstract

The invention relates to a preparation method of a zinc cadmium sulfide / bismuth oxybromide composite visible light catalyst. The method includes preparing zinc cadmium sulfide and a bismuth oxybromidephotocatalyst; and preparing the zinc cadmium sulfide / bismuth oxybromide composite photocatalyst. Beneficial effects of the method are that the method is simple, low in cost, and easy to operate; preparation conditions are easy to implement and control; and the prepared composite visible light catalyst is a green, pollution-free and high-performance catalyst, has high photocatalytic activity, short degradation time and good effects, and has a potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic inorganic nanometer materials, and relates to a preparation method of a zinc cadmium sulfide / bismuth oxybromide composite visible light catalyst. Background technique [0002] The degradation of toxic and harmful organic compounds has always been a research hotspot in the field of photocatalysis. The clean and renewable solar energy that naturally exists in nature is closely related to people's industrial production and basic life. Metal sulfide is an important semiconductor nanomaterial, which has a wide range of applications in photocatalysis, photoelectricity and other fields. It can use solar energy through photothermal and photoelectric conversion, and it also has the advantages of low cost, good stability and high utilization efficiency. . The advantages of high light absorption rate, narrow emission spectrum and fast charge separation rate make metal sulfide nanomaterials have grea...

Claims

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Application Information

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IPC IPC(8): B01J27/06C02F1/30C02F101/30
CPCC02F1/30B01J27/06C02F2101/308B01J35/39
Inventor 徐玥李忠玉崔浩洁李贝贝徐松张雨哲
Owner CHANGZHOU UNIV
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