Silver phosphate/zinc oxide composite photocatalytic material and preparation method therefor

A composite photocatalysis and zinc oxide technology, applied in the field of photocatalysis, can solve the problems of poor purification effect and high cost, and achieve the effects of less energy consumption, reduced preparation cost, and improved visible light photocatalytic effect.

Inactive Publication Date: 2014-01-01
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a low-cost, simple preparation, green and environmentally friendly preparation method and application of silver phosphate/zinc oxide composite photocatalytic material, which

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  • Silver phosphate/zinc oxide composite photocatalytic material and preparation method therefor
  • Silver phosphate/zinc oxide composite photocatalytic material and preparation method therefor
  • Silver phosphate/zinc oxide composite photocatalytic material and preparation method therefor

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Example Embodiment

[0024] Example 1

[0025] Dissolve 150 mg of ZnO in 40 ml of deionized water for 30 minutes to obtain a ZnO dispersion; weigh 1.529 g of silver nitrate and dissolve in 20 ml of deionized water, and stir for 10 minutes to obtain a silver nitrate solution. Add dropwise to the ZnO dispersion under stirring conditions, stir for 6 hours at a rate of 100 revolutions per minute to form a mixed precursor solution A; weigh 0.426 g Na 2 HPO 4 The solid was dissolved in 20 ml of deionized water and ultrasonically dissolved to obtain a disodium hydrogen phosphate solution. The prepared disodium hydrogen phosphate solution was added dropwise to the mixed precursor solution A. The reaction system appeared brownish-yellow and turbid, and the addition was completed. The resulting mixed solution was continuously stirred for 30 minutes, and the resulting product was suction filtered, washed with absolute ethanol and deionized water, and vacuum dried.

Example Embodiment

[0026] Example 2

[0027] Dissolve 300 mg of ZnO in 40 ml of deionized water for 30 minutes to obtain a ZnO dispersion; weigh 1.529 g of silver nitrate in 20 ml of deionized water and stir for 10 minutes to obtain a silver nitrate solution. Add dropwise to the ZnO dispersion under stirring conditions, and stir for 8 hours at a rate of 100 revolutions per minute to form a mixed precursor solution A; weigh 0.426 g Na 2 HPO 4 The solid was dissolved in 20 ml of deionized water and ultrasonically dissolved to obtain a disodium hydrogen phosphate solution, and then the prepared disodium hydrogen phosphate solution was added dropwise to the mixed solution A, the reaction system appeared brownish-yellow turbidity, after the addition was completed The obtained mixed solution was continuously stirred for 40 minutes, and the obtained product was suction filtered, washed with absolute ethanol and deionized water, and dried in vacuum.

Example Embodiment

[0028] Example 3

[0029] Dissolve 600 mg of ZnO in 40 ml of deionized water for 30 minutes to obtain a ZnO dispersion; weigh 1.529 g of silver nitrate and dissolve in 20 ml of deionized water, and stir for 10 minutes to obtain a silver nitrate solution; Add dropwise to the ZnO dispersion under stirring conditions, stir at 100 rpm for 10 hours to form a mixed precursor solution A; weigh 0.426 g Na 2 HPO 4 The solid was dissolved in 20 ml of deionized water and ultrasonically dissolved to obtain a disodium hydrogen phosphate solution, and then the prepared disodium hydrogen phosphate solution was added dropwise to the mixed solution A, the reaction system appeared brownish-yellow turbidity, after the addition was completed The obtained mixed solution was continuously stirred for 50 minutes, and the obtained product was suction filtered, washed with absolute ethanol and deionized water, and dried in vacuum.

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Abstract

The invention relates to the technical field of photocatalysis, particularly to a silver phosphate/zinc oxide composite photocatalytic material and a preparation method therefor. The preparation method comprises the following steps: ultrasonic dispersion of zinc oxide in deionized water is performed so as to obtain a zinc oxide dispersion liquid; silver nitrate is dissolved into deionized water, the deionized water is dripped into the zinc oxide dispersion liquid under a magnetic force stirring condition so as to obtain a mixed solution, after a period of time of stirring, a well prepared phosphate solution is slowly added into the mixed solution of zinc oxide and silver nitrate for stirring continuously for a period of time, after dripping, a mixed solution is obtained and stirred continuously, after product suction filtration, absolute ethyl alcohol and deionized water are used for washing repeatedly, then vacuum drying is performed, and the silver phosphate/zinc oxide composite photocatalytic material is obtained. The silver phosphate/zinc oxide composite photocatalytic material provided by the invention has the advantages that raw material sources are wide, the preparing process is simple and feasible and the cost is low. The prepared silver phosphate/zinc oxide composite photocatalytic material has a better photocatalytic degradation effect on an organic dye material, rhodamine B, under the irradiation of ultraviolet light, and the composite photocatalytic material has wide application prospects in the fields of environmental pollution improvement and purification, and environment-friendly materials.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a silver phosphate / zinc oxide composite photocatalytic material and its preparation method, specifically a method for preparing silver phosphate / zinc oxide composite photocatalytic material by ion exchange in aqueous solution . Background technique [0002] With the development of industry, the limited water resources of human beings have been increasingly polluted. It has become an important task in the field of environmental protection to remove toxic and harmful chemicals such as pesticides and organic dyes in water bodies. However, most of the current water pollution treatment methods are aimed at Pollutants with large emissions and high concentrations are still powerless to purify the priority pollutants in water bodies with low concentrations and difficult to transform. However, the photocatalytic degradation technology developed in the 1980s has provided a good wa...

Claims

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Application Information

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IPC IPC(8): B01J27/18A62D3/17A62D101/28A62D101/26
Inventor 杨小飞刘瑞娜李扬秦洁玲李荣包杰樊丽娜
Owner JIANGSU UNIV
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