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Silver-phosphate-based composite visible light photocatalytic material and preparation method thereof

A catalytic material and silver phosphate-based technology are applied in the field of silver phosphate-based composite visible light catalytic materials and their preparation, and achieve the effects of less energy consumption, reduced preparation cost, and simple and easy preparation process

Inactive Publication Date: 2014-02-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a cheap, simple and practical method to quickly prepare the method of silver phosphate cube / zinc oxide rod composite visible light catalytic material, overcome existing ZnO Photocatalytic materials have disadvantages such as low visible light catalytic efficiency, single function, high cost of silver phosphate visible light catalytic materials, and difficult structure regulation. In addition, it has certain theoretical guiding significance for the design and synthesis of highly active composite photocatalytic materials with specific crystal faces.

Method used

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  • Silver-phosphate-based composite visible light photocatalytic material and preparation method thereof
  • Silver-phosphate-based composite visible light photocatalytic material and preparation method thereof
  • Silver-phosphate-based composite visible light photocatalytic material and preparation method thereof

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Embodiment 1

[0030] Dissolve 300 mg of zinc oxide in 10 ml of deionized water and sonicate for 30 minutes to obtain a zinc oxide dispersion; weigh 0.51 g of silver nitrate and dissolve it in 20 ml of deionized water, and stir to obtain a silver nitrate solution; Add it dropwise to the zinc oxide dispersion under stirring conditions, and stir at a rate of 100 rpm for 8 hours to form a mixed precursor solution A; prepare 60 ml of 0.1 mol / L ammonia water, dropwise under the condition of magnetic stirring Added into mixed precursor solution A, stirred at a rate of 200 rpm for 30 minutes to obtain mixed precursor solution B, weighed 0.85 g Na 2 HPO 4 Dissolve in 20 ml of deionized water, ultrasonically dissolve to obtain a disodium hydrogen phosphate solution, add the prepared disodium hydrogen phosphate solution to the mixed precursor solution B drop by drop, the reaction system appears brownish-yellow turbid, after the dropwise addition The obtained mixed solution was continuously stirred fo...

Embodiment 2

[0032] Dissolve 150 mg of zinc oxide in 10 ml of deionized water and sonicate for 30 minutes to obtain a zinc oxide dispersion; weigh 0.51 g of silver nitrate and dissolve it in 20 ml of deionized water, and stir to obtain a silver nitrate solution; Add it dropwise to the zinc oxide dispersion under stirring conditions, and stir at a rate of 100 rpm for 6 hours to form a mixed precursor solution A; prepare 60 ml of 0.1 mol / L ammonia water, dropwise under the condition of magnetic stirring Added into mixed precursor solution A, stirred at a rate of 200 rpm for 40 minutes to obtain mixed precursor solution B; weighed 0.85 g Na 2 HPO 4 Dissolved in 20 ml of deionized water, ultrasonically dissolved to obtain a disodium hydrogen phosphate solution, and added the prepared disodium hydrogen phosphate solution dropwise to the mixed precursor solution B, and the reaction system appeared brownish-yellow turbid; The obtained mixed solution was continuously stirred for 40 minutes, and t...

Embodiment 3

[0034] Dissolve 600 mg of zinc oxide in 10 ml of deionized water and sonicate for 30 minutes to obtain a zinc oxide dispersion; weigh 0.51 g of silver nitrate and dissolve it in 20 ml of deionized water, and stir to obtain a silver nitrate solution; Add dropwise into the zinc oxide dispersion under stirring conditions, stir at 100 rpm for 10 hours to form a mixed precursor solution A, prepare 60 ml of 0.1 mol / L ammonia water, dropwise under the condition of magnetic stirring Added into mixed precursor solution A, stirred at a rate of 200 rpm for 50 minutes to obtain mixed precursor solution B, weighed 0.85 g Na 2 HPO 4 Dissolve in 20 ml of deionized water, ultrasonically dissolve to obtain a disodium hydrogen phosphate solution, add the prepared disodium hydrogen phosphate solution dropwise to the mixed precursor solution B, and the reaction system appears brownish-yellow turbid; The obtained mixed solution was continuously stirred for 50 minutes, and the obtained product was...

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Abstract

The invention relates to the technical field of photocatalysis, and particularly relates to a silver-phosphate-based composite visible light photocatalytic material and a preparation method thereof. The method comprises steps of: dissolving zinc oxide in water and performing ultrasonic dispersion to obtain a zinc oxide dispersion liquid; dissolving silver phosphate in deionized water, and adding the silver phosphate solution dropwise into the zinc oxide dispersion liquid under magnetic stirring to obtain a mixed solution A; adding dropwise prepared aqueous ammonia into the mixed solution A to obtain a mixed solution B; after stirring for a while, adding a phosphate solution dropwise into the mixed solution B slowly, and stirring continuously; and washing repeatedly with absolute ethanol and deionized water respectively a product after the product is subjected to suction filtration, and drying in vacuum to obtain a silver phosphate cubic / zinc oxide rod composite photocatalytic material. The material and the method are advantaged by raw materials with wide source, simple and practical preparation technology and low cost. The silver phosphate in the composite material has a regular cubic structure and regular dimensions. The material has good photocatalytic degradation effects for the organic dye rhodamine B.

Description

technical field [0001] The present invention relates to the technical field of photocatalysis, in particular to a silver phosphate-based composite visible light catalytic material and its preparation method, specifically to a silver phosphate cube / zinc oxide with regular morphology and controllable structure prepared by ion exchange in aqueous solution The invention discloses a rod composite material method, which belongs to the technical field of composite material, photocatalysis and environmental treatment. Background technique [0002] Environmental issues are a major challenge facing society today, and one of the main factors restricting economic and social development and affecting people's health. Among them, the problem of water resources is becoming more and more serious, and the pollution of water environment has seriously affected people's quality of life, and has also had a greater impact on the implementation of my country's sustainable development strategy. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18
Inventor 杨小飞包杰李扬秦洁玲李荣樊丽娜
Owner JIANGSU UNIV
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