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The application of arsenous sulfide

A technology of arsenous sulfide and photocatalysis, which is applied in the field of photocatalysis, and achieves the effects of mild preparation conditions, favorable promotion and application, and simple preparation methods

Inactive Publication Date: 2016-08-17
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no patents and literature reports that As 2 S 3 as a photocatalyst for the degradation of pollutants

Method used

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  • The application of arsenous sulfide
  • The application of arsenous sulfide
  • The application of arsenous sulfide

Examples

Experimental program
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Embodiment Construction

[0019] The following is the As of the present invention 2 S 3 Specific examples of applied research, the following examples are intended to further describe the present invention in detail, but not to limit the present invention.

[0020] (1)As 2 S 3 Preparation of:

[0021] Take 2mL of Na with a concentration of 2.6mol / L 2 HASO 3 The solution was mixed with 70mL deionized water, and then 2mL of hydrochloric acid with a concentration of 36wt% was added to obtain an arsenic precursor solution; 1.9g of Na 2 S·9H 2 O was dissolved in 70 mL of deionized water to obtain a sulfur precursor solution. At room temperature, the arsenic precursor solution and the sulfur precursor solution were mixed, stirred in the dark for 2 hours, and then centrifuged to obtain a precipitate. The precipitate was dried at 60 °C for 5 h to obtain As 2 S 3 sample.

[0022] (2)As 2 S 3 The representation of:

[0023] From figure 1 Visible, As 2 S 3 Has an irregular particle morphology with...

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Abstract

The invention discloses application of arsenic sulfide. Arsenic sulfide is used as a photocatalyst to degrade organic dye pollutants, thereby expanding the range of applications. The activity of arsenic sulfide in photocatalytic degradation of the organic dye pollutants, such as rhodamine B dye, is obviously higher than that of titanium dioxide P25 and is also higher than that of a high-activity Ag3PO4 photocatalyst. Arsenic sulfide disclosed by the invention has the advantages of high photocatalyst activity, simple preparation method and mild preparation conditions, and is conductive to popularization and application.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis in environmental treatment, and relates to the application of arsenous sulfide as a novel photocatalyst in degrading organic dye pollutants. Background technique [0002] At present, the scale of the printing and dyeing industry in the world continues to expand, and a large amount of organic dye pollutants discharged by this industry have become an important source of water pollution in the world. Semiconductor photocatalysis technology can directly use sunlight at room temperature to efficiently oxidize and degrade or eliminate dye pollutants. Therefore, it is a favorable way for water pollution control to make full use of sunlight to degrade dye pollutants through photocatalytic technology. Because ultraviolet light only accounts for about 4% of the total energy of sunlight, while visible light accounts for about 46%, the key to utilizing solar energy through photocatalytic technology is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30B01J27/04
CPCB01J27/04C02F1/30C02F2101/308
Inventor 汤建庭李大塘封朝霞范超袁芳芳
Owner HUNAN UNIV OF SCI & TECH