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AgInS2 nanoflower having visible light photocatalytic oxidation and photocatalytic reduction capabilities, and preparation and applications thereof

A technology of photocatalytic oxidation and nanoflowers, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor stability, limited development, and easy photocorrosion of binary sulfides, and achieve Ease of operation, small band gap, and simple process

Inactive Publication Date: 2016-10-19
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the deepening of research, most binary sulfides have poor stability and are prone to photocorrosion, which limits their development.

Method used

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  • AgInS2 nanoflower having visible light photocatalytic oxidation and photocatalytic reduction capabilities, and preparation and applications thereof
  • AgInS2 nanoflower having visible light photocatalytic oxidation and photocatalytic reduction capabilities, and preparation and applications thereof
  • AgInS2 nanoflower having visible light photocatalytic oxidation and photocatalytic reduction capabilities, and preparation and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 0.2g AgNO 3 Dissolve in 96mL water to form AgNO 3 solution; 0.22g InCl 3 Add to AgNO 3 After mixing in the solution, add 0.19g of thiourea and stir for 30min to form a transparent and uniform solution. The solution was transferred to a 120mL autoclave lined with polytetrafluoroethylene, pressurized to 1.45atm, placed in an oven for hydrothermal reaction at 160°C for 12h, and cooled naturally to room temperature. Centrifuge and collect the brick-red precipitate at the bottom, wash with deionized water and then with absolute ethanol, and dry at 80 °C for 12 h to obtain AgInS 2 nanoflowers. from figure 1 AgInS can be clearly shown on 2 nanoflowers, from figure 2 As can be seen above, in the range of 350-550nm visible light, AgInS 2 Nanoflowers have strong absorption capacity.

Embodiment 2

[0024] 0.2g AgNO 3 Dissolve in 96mL ethanol to form AgNO 3 solution; 0.22g InCl 3 Add to AgNO 3 After mixing in the solution, add 0.19g of thiourea and stir for 30min to form a transparent and uniform solution. The solution was transferred to a 120mL autoclave lined with polytetrafluoroethylene, pressurized to 1.40atm, placed in an oven for hydrothermal reaction at 160°C for 12h, and cooled to room temperature naturally. Centrifuge and collect the brick-red precipitate at the bottom, wash with deionized water and then with absolute ethanol, and dry at 80 °C for 12 h to obtain AgInS 2 nanoflowers.

Embodiment 3

[0026] 0.2g AgNO 3 Dissolve in 96mL ethanol to form AgNO 3 solution; 0.22g InCl 3 Add to AgNO 3 After mixing in the solution, add 0.19g of thiourea and stir for 30min to form a transparent and uniform solution. The solution was transferred to a 120mL autoclave lined with polytetrafluoroethylene, pressurized to 1.32atm, placed in an oven for hydrothermal reaction at 120°C for 48h, and cooled to room temperature naturally. Centrifuge and collect the brick-red precipitate at the bottom, wash with deionized water and then with absolute ethanol, and dry at 80 °C for 12 h to obtain AgInS 2 nanoflowers.

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PUM

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Abstract

An AgInS2 nanoflower having visible light photocatalytic oxidation and photocatalytic reduction capabilities is disclosed. The AgInS2 nanoflower is a brick-red nanometer ternary metal sulfide which has a flower-shaped micro structure and which is prepared by subjecting AgNO3 and InCl3 in an equal mole ratio and excessive thiourea to a hydrothermal reaction. The AgInS2 nanoflower is applied for catalytic degradation of pollutants. The AgInS2 nanoflower has a low energy gap, and the micro structure of the nanoflower is flower-shaped, and therefore the nanoflower is high in specific surface area and high in adsorbability. Capabilities of photocatalytic oxidation degradation of organic pollutants and photocatalytic reduction of inorganic pollutants are greatly improved. Visible light adsorbability is better. A process is simple, easy to operate and can be applied for industrial production.

Description

technical field [0001] The invention relates to a semiconductor photocatalyst for controlling environmental pollution. Background technique [0002] Energy crisis and environmental problems are two serious problems that human beings must face. How to effectively control and control the pollution of various chemical pollutants to the environment is the focus of comprehensive environmental management. In recent years, semiconductor photocatalytic oxidation technology, one of the advanced oxidation technologies, is being extensively studied by scholars at home and abroad. This technology can use solar energy as energy to degrade pollutants in the environment, effectively use solar energy, and reduce people's Energy use. [0003] Semiconductor photocatalytic oxidation technology began when Japanese scientists Fujishima and Honda discovered TiO irradiated by light 2 Single crystal electrodes can convert H 2 O decomposition, using TiO 2 The conversion of light energy into elec...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J20/02C02F1/28C02F1/30C02F1/72C02F101/30
Inventor 邹学军郭艳杰董玉瑛徐娇
Owner DALIAN NATIONALITIES UNIVERSITY
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