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Silver phosphate/P25 bi-functional composite material, preparation method and application thereof

A composite material, dual-function technology, applied in the fields of botanical equipment and methods, applications, chemical instruments and methods, etc., can solve the problems of poor purification effect and singleness, and achieve low energy consumption, efficient degradation, and strong broad-spectrum bactericidal performance. Effect

Inactive Publication Date: 2013-03-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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 / P25 dual-functional composite materials, to overcome the defects that existing functional materials can only play a relatively single function and have poor purification effects , laying a technical foundation for the development and application of low-cost, high-performance, multi-functional environmental purification materials

Method used

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  • Silver phosphate/P25 bi-functional composite material, preparation method and application thereof
  • Silver phosphate/P25 bi-functional composite material, preparation method and application thereof
  • Silver phosphate/P25 bi-functional composite material, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0024] Dissolve 300 mg of P25 in 40 ml of deionized water and sonicate for 30 minutes to obtain a P25 dispersion; weigh 1.529 g of silver nitrate and dissolve it in 20 ml of deionized water, and stir for 10 minutes to obtain a silver nitrate solution; Added dropwise to the P25 dispersion under the condition of , stirred slowly for 12 hours to form a mixed solution A; weighed 0.426 g Na 2 HPO 4 The solid was dissolved in 20 ml of deionized water, and dissolved by ultrasonic to obtain a disodium hydrogen phosphate solution; the prepared disodium hydrogen phosphate solution was added dropwise to the mixed solution A, and brownish yellow turbidity appeared in the reaction system, and after the addition was completed, The mixed solution was stirred continuously for 30 minutes, and the obtained product was vacuum-dried after repeated washing with absolute ethanol and deionized water several times after suction filtration.

[0025] figure 1 For the scanning electron micrograph of ...

Embodiment 2

[0027] Dissolve 400 mg of P25 in 40 ml of deionized water and sonicate for 30 minutes to obtain a P25 dispersion; weigh 1.529 g of silver nitrate and dissolve it in 20 ml of deionized water, and stir for 10 minutes to obtain a silver nitrate solution; Add dropwise into the P25 dispersion under stirring conditions, and stir slowly for 12 hours to form a mixed solution A; weigh 0.426 g Na 2 HPO 4 Dissolve the solid in 20 ml of deionized water, and obtain a disodium hydrogen phosphate solution after ultrasonic dissolution, and then add the prepared disodium hydrogen phosphate solution dropwise into the mixed solution A, and brownish yellow turbidity appears in the reaction system; after the addition is completed The obtained mixed solution was continuously stirred for 60 minutes, and the obtained product was suction-filtered, washed repeatedly with absolute ethanol and deionized water for several times, and then vacuum-dried.

Embodiment 3

[0029] Dissolve 800 mg of P25 in 40 ml of deionized water and sonicate for 30 minutes to obtain a P25 dispersion; weigh 1.529 g of silver nitrate and dissolve it in 20 ml of deionized water, and stir for 10 minutes to obtain a silver nitrate solution; Add dropwise into the P25 dispersion under stirring conditions, and stir slowly for 12 hours to form a mixed solution A; weigh 0.426 g Na 2 HPO 4 Dissolve the solid in 20 ml of deionized water, and obtain a disodium hydrogen phosphate solution after ultrasonic dissolution, and then add the prepared disodium hydrogen phosphate solution dropwise into the mixed solution A, and brownish yellow turbidity appears in the reaction system; after the addition is completed The obtained mixed solution was continuously stirred for 45 minutes, and the obtained product was suction-filtered, washed repeatedly with absolute ethanol and deionized water for several times, and then vacuum-dried.

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Abstract

The invention discloses a silver phosphate / P25 bi-functional composite material, a preparation method and an application thereof, and belongs to the technical field of antibacterial materials, photocatalysis and environment treatment. The preparation method comprises the following steps of dispersing the P25 in water under the assistance of ultrasonic to obtain a P25 dispersion solution; dissolving silver nitrate in deionized water, adding the silver nitrate solution into the above P25 dispersion solution with magnetic stirring to obtain a mixed solution; dropwise adding a prepared phosphatic solution into the mixed solution slowly until brown yellow turbid appears in the reaction system; stirring continuously after the phosphatic solution is completely added; pump-filtering, washing, and vacuum-drying the product to obtain the silver phosphate / P25 bi-functional composite material. The prepared composite material not only has relatively good photocatalytic degradation effect for an organic dye rhodamine B, but also has wide-spectrum sterilization effect for common bacteria. The bi-functional composite material has wide application prospects in the fields of treatment and purification of environment pollutions, environment-friendly functional materials, etc.

Description

technical field [0001] The invention relates to a silver phosphate / P25 dual-function composite material and its preparation method and application, in particular to a method for preparing a silver phosphate / P25 dual-function composite material by ion exchange in an aqueous solution, which belongs to composite materials, antibacterial materials, optical Catalysis and environmental treatment technology. Background technique [0002] The shortage of water resources has become a major obstacle to people's health, economy and social development, and the increasingly serious water environment pollution has reduced the use function of water bodies and aggravated the deterioration of water environment; Suspension-based filtration, sedimentation, air flotation, chemical coagulation and other sewage treatment and purification methods can only be applied to water sources that are not seriously polluted. For dissolved pollutants such as volatile phenols, organic matter, ammonia nitrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18A01N59/26A01P1/00C02F1/50C02F1/30
CPCY02W10/37
Inventor 杨小飞张杜崔海英李扬刘恒张蓉仙高庆侠
Owner JIANGSU UNIV
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