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Silver phosphate cuboid/P25 dual-function composition material and preparation method thereof

A composite material, silver phosphate technology, applied in the field of structure, achieves the effects of low cost, reduced preparation cost, and simple and easy preparation process

Inactive Publication Date: 2013-05-29
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a low-cost, simple and practical method to quickly prepare micron-scale silver phosphate cubes / P25 nanoparticle composites with regular appearance and uniform size The method overcomes the shortcomings of existing photocatalytic materials such as low photocatalytic efficiency, poor degradation effect on target pollutants, single function, high cost, and difficult structure adjustment, and it is also suitable for the design and synthesis of high activity, multi- Functional composite materials have certain theoretical guiding significance

Method used

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  • Silver phosphate cuboid/P25 dual-function composition material and preparation method thereof
  • Silver phosphate cuboid/P25 dual-function composition material and preparation method thereof
  • Silver phosphate cuboid/P25 dual-function composition material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] Dissolve 30 mg of P25 in 10 ml of deionized water and sonicate for 30 minutes to obtain a P25 dispersion, weigh 0.765 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 it dropwise to the P25 dispersion under the condition of stirring. After the dropwise addition, continue to stir slowly to form a mixed solution A. Prepare 90 ml of 0.1 mol / L ammonia water, and add it dropwise to the mixed solution A under the condition of magnetic stirring. In the mixed solution B, the mixed solution B was obtained after stirring slowly, and the 0.15 mol / L disodium hydrogen phosphate solution was added dropwise to the mixed solution B until brownish yellow turbidity appeared in the reaction system, and the mixed solution was continuously stirred for 60 Minutes, the obtained product was filtered with suction, washed repeatedly with absolute ethanol and deionized water, and dried in vacuum.

Embodiment 2

[0027] Dissolve 60 mg of P25 in 10 ml of deionized water and sonicate for 30 minutes to obtain a P25 dispersion, weigh 0.765 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 it dropwise to the P25 dispersion under the condition of stirring. After the dropwise addition, continue to stir slowly to form a mixed solution A. Prepare 90 ml of 0.1 mol / L ammonia water, and add it dropwise to the mixed solution A under the condition of magnetic stirring. In the mixed solution B, stir slowly and evenly to obtain the mixed solution B, and add 0.15 mol / L disodium hydrogen phosphate solution dropwise into the mixed solution B until the brownish yellow turbidity appears in the reaction system, stop the dropwise addition, and continue to stir the obtained mixed solution for 30 Minutes, the obtained product was filtered with suction, washed repeatedly with absolute ethanol and deionized water, and dried in vac...

Embodiment 3

[0029] Dissolve 90 mg of P25 in 10 ml of deionized water and sonicate for 30 minutes to obtain a P25 dispersion, weigh 0.765 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 it dropwise to the P25 dispersion under the condition of stirring. After the dropwise addition, continue to stir slowly to form a mixed solution A. Prepare 90 ml of 0.1 mol / L ammonia water, and add it dropwise to the mixed solution A under the condition of magnetic stirring. In the mixed solution B, stir slowly and evenly to obtain the mixed solution B, and add 0.15 mol / L disodium hydrogen phosphate solution dropwise to the mixed solution B until brownish-yellow turbidity appears in the reaction system and stop the dripping, and the obtained mixed solution continues to stir for 40 Minutes, the obtained product was filtered with suction, washed repeatedly with absolute ethanol and deionized water, and dried in vacuum.

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Abstract

The invention discloses a silver phosphate cuboid / P25 dual-function composition material and a preparation method thereof, which belong to the technical field of composition materials, antibiosis materials, photocatalysis and environmental management. The preparation method comprises the following steps of: dissolving P25 in water and performing ultrasonic dispersion on the P25 to obtain a P25 dispersion solution; dissolving silver nitrate in de-ionized water, and dripping the dissolved silver nitrate in the P25 dispersion solution under a magnetic stirring condition, thus obtaining a mixed solution A; slowly dripping prepared ammonia water in the mixed solution A, thus obtaining a mixed solution B; and stirring the ammonia water and the mixed solution B for a while, slowly dripping a disodium hydrogen phosphate solution in the mixed solution B for unceasingly stirring, pumping and filtering products, repetitively washing the products by absolute ethyl alcohol and de-ionized water for many times, and drying the washed products in a vacuum manner, thus obtaining the silver phosphate cuboid / P25 dual-function composition material. Silver phosphate in the prepared composition material has a regular cubic structure and is uniform in particle size; and the composition material has a good photocatalysis degradation effect on organic dyestuff rhodamine B under visible light irradiation, and has a broad-spectrum sterilizing effect on common bacteria.

Description

technical field [0001] The present invention relates to a silver phosphate cube / P25 bifunctional composite material and a preparation method thereof, in particular to a method for preparing a silver phosphate / P25 bifunctional composite material with regular appearance and controllable structure by using an ion exchange method in an aqueous solution , which belongs to the technical field of composite materials, antibacterial materials, photocatalysis and environmental treatment. Background technique [0002] Environmental problems are a major challenge facing the current society and one of the main factors that restrict economic and social development and affect people's health; among them, the pollution of water environment is becoming more and more serious, and the water environment is becoming more and more complex. Traditional sewage treatment and purification methods, For example, filtration, sedimentation, air flotation, chemical coagulation, etc. to remove colloids a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18A01N59/26A01P1/00
Inventor 李扬杨小飞崔海英秦洁玲刘瑞娜包杰
Owner JIANGSU UNIV
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