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A high electron transport core-shell znin 2 the s 4 Nanosheet/ta 3 no 5 Preparation method and application of composite photocatalyst

A composite photocatalysis, znin2s4 technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of undiscovered, reduced light absorption, limited wide application, etc. Improve the effect of electron transmission, non-toxic and easy-to-obtain raw materials

Active Publication Date: 2021-10-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ternary sulfide ZnIn 2 S 4 As a new type of semiconductor photocatalyst, it has unique photoelectric performance and is not easy to be photochemically corroded. its wide application
However, so far, no information about ZnIn 2 S 4 / Ta 3 N 5 The preparation of composite photocatalytic materials with core-shell structure and its application in splitting water to produce hydrogen and degrading tetracycline hydrochloride are reported. Therefore, ZnIn 2 S 4 / Ta 3 N 5 Nanocomposite as a new type of photocatalyst

Method used

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  • A high electron transport core-shell znin <sub>2</sub> the s <sub>4</sub> Nanosheet/ta <sub>3</sub> no <sub>5</sub> Preparation method and application of composite photocatalyst
  • A high electron transport core-shell znin <sub>2</sub> the s <sub>4</sub> Nanosheet/ta <sub>3</sub> no <sub>5</sub> Preparation method and application of composite photocatalyst
  • A high electron transport core-shell znin <sub>2</sub> the s <sub>4</sub> Nanosheet/ta <sub>3</sub> no <sub>5</sub> Preparation method and application of composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] (1) Weigh 0.178g of zinc nitrate, 0.382g of indium nitrate, and 0.225g of thioacetamide (TAA), dissolve it in 25ml of deionized water, stir for 15min until it dissolves, and obtain a clear solution; weigh hexadecane Add 0.15 g of trimethylammonium bromide (CTAB) into the above clear solution, and stir for 15 min to obtain a mixed solution.

[0026] (2) Weigh Ta 3 N 5 0.0026g was added to the mixed solution in step (1), stirred for 4 minutes, ultrasonicated for 3 minutes, repeated twice to obtain a light red dispersion, which was transferred to a reaction kettle for constant temperature reaction, the reaction temperature was 120 ° C, and the reaction time was 3 hours. After the reaction is finished, cool to room temperature, centrifuge the obtained substance, wash repeatedly with deionized water and absolute ethanol, and then put it in a vacuum drying oven to dry to obtain ZnIn 2 S 4 / Ta 3 N 5 Composite photocatalytic materials. Among them Ta 3 N 5 The content o...

example 2

[0029] (1) Weigh 0.3204g of zinc nitrate, 0.6876g of indium nitrate, and 0.405g of thioacetamide (TAA), dissolve them in 30ml of deionized water, stir for 20min until they dissolve, and obtain a clear solution; weigh hexadecane Add 0.27 g of trimethylammonium bromide (CTAB) into the above clear solution, and stir for 20 min to obtain a mixed solution.

[0030] (2) Weigh Ta 3 N 5 0.0138g was added to the mixed solution of step (1), stirred for 6 minutes, ultrasonicated for 6 minutes, repeated twice to obtain a light red dispersion, which was transferred to a reaction kettle for constant temperature reaction, the reaction temperature was 140 ° C, and the reaction time was 5 hours. After the reaction is finished, cool to room temperature, centrifuge the obtained substance, wash repeatedly with deionized water and absolute ethanol, and then put it in a vacuum drying oven to dry to obtain ZnIn 2 S 4 / Ta 3 N 5 Composite photocatalytic materials. Among them Ta 3 N 5 The cont...

example 3

[0034] (1) Weigh 0.534g of zinc nitrate, 1.146g of indium nitrate, and 0.675g of thioacetamide (TAA), dissolve it in 30ml of deionized water, stir for 15min until it dissolves, and obtain a clear solution; weigh hexadecane Add 0.45 g of trimethylammonium bromide (CTAB) into the above clear solution, and stir for 25 minutes to obtain a mixed solution.

[0035] (2) Weigh Ta 3 N 5 0.0385g was added to the mixed solution of step (1), stirred for 8 minutes, ultrasonicated for 6 minutes, repeated twice to obtain a light red dispersion, which was transferred to a reaction kettle for constant temperature reaction, the reaction temperature was 140 ° C, and the reaction time was 6 hours. After the reaction is finished, cool to room temperature, centrifuge the obtained substance, wash repeatedly with deionized water and absolute ethanol, and then put it in a vacuum drying oven to dry to obtain ZnIn 2 S 4 / Ta 3 N 5 Composite photocatalytic materials. Among them Ta 3 N 5 The conte...

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Abstract

The invention belongs to the application field of preparation of nanocomposite materials and environmental protection, and discloses a high electron transport type core-shell ZnIn 2 S 4 Nanosheet / Ta 3 N 5 Preparation method and application of composite photocatalyst. This method takes the synthesized Ta 3 N 5 Using nanosheets as raw materials, ZnIn 2 S 4 / Ta 3 N 5 Nanocomposite photocatalysts. ZnIn prepared by the present invention 2 S 4 / Ta 3 N 5 The nanocomposite photocatalyst can be applied to catalyze the degradation of tetracycline hydrochloride under visible light and split water to produce hydrogen under sunlight. The invention has the advantages of simple operation, easy control of reaction conditions, readily available and non-toxic raw materials, and is a green synthesis method. Zn 2 S 4 / Ta 3 N 5 The core-shell structure formed by the two greatly improves the ZnIn 2 S 4 Electron transport in composite nanomaterials promotes the effective separation of photogenerated electron-hole pairs, thereby improving the overall photocatalytic activity, and has important and broad application prospects in environmental governance and energy conversion.

Description

technical field [0001] The invention belongs to the field of preparation of nanocomposite materials and their application in environmental protection and energy conversion, and relates to a high electron transport type core-shell ZnIn 2 S 4 Nanosheet / Ta 3 N 5 Preparation method of composite photocatalyst. Background technique [0002] With the rapid development of the world economy, environmental pollution and energy shortage have become the most serious problems restricting the survival and development of human beings. Therefore, exploring high-efficiency, low-consumption, and green water pollution treatment methods and alternative energy sources has become the focus of current research. Photocatalytic technology is a clean and efficient treatment method in line with the sustainable development strategy, and it is most likely to become an effective way to solve the energy crisis and deal with environmental pollution problems. However, the electrons and holes generated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J37/10B82Y30/00B82Y40/00C01B3/04C02F1/30C02F101/34C02F101/38
CPCB82Y30/00B82Y40/00C01B3/042C02F1/30B01J27/24B01J37/10C01B2203/0277C02F2101/34C02F2101/38C01B2203/1041C02F2305/10B01J35/396B01J35/39Y02E60/36
Inventor 肖艳蒋银花彭志远张申罗义飞张文莉倪良
Owner JIANGSU UNIV
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