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Ag/ZnO nano-composite, preparation method thereof and application of composite

A nanocomposite and reaction technology, applied in the direction of botany equipment and methods, applications, nanotechnology, etc., can solve the problems of long time required for photocatalytic degradation of organic pollutants, complicated experimental operations, incomplete degradation, etc., and achieve good results Photocatalytic performance, cheap and easy-to-obtain raw materials, and good preservation effect

Active Publication Date: 2017-02-01
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although the existing preparation methods can obtain Ag / ZnO composites with better morphology and the photocatalytic effect of the product is significantly improved compared with pure ZnO, but there are still problems such as complicated experimental operations, long reaction time, high temperature required, and raw materials. Many and not environmentally friendly, and the resulting Ag / ZnO photocatalytic degradation of organic pollutants takes a long time, the degradation is incomplete, and some can only be degraded under ultraviolet light

Method used

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  • Ag/ZnO nano-composite, preparation method thereof and application of composite
  • Ag/ZnO nano-composite, preparation method thereof and application of composite
  • Ag/ZnO nano-composite, preparation method thereof and application of composite

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Embodiment 1

[0031] Add 10mmol of zinc acetate dihydrate and 0.2mmol of silver nitrate into 40.00mL PEG-200 at 180°C and magnetically stir for 0.5h to obtain a gray turbid solution. Cool naturally to room temperature, centrifuge the product, separate the supernatant sol clear liquid and precipitate, wash the obtained precipitate three times with secondary water and absolute ethanol, and dry in an oven at 80°C. The product was then sealed for further characterization.

Embodiment 2

[0033] Add 10mmol of zinc acetate dihydrate and 0.2mmol of silver nitrate into 40.00mL PEG-200 at 180°C for 2h with magnetic stirring to obtain a gray turbid solution. Cool naturally to room temperature, centrifuge the product, separate the supernatant sol clear liquid and precipitate, wash the obtained precipitate three times with secondary water and absolute ethanol, and dry in an oven at 80°C. The product was then sealed for further characterization.

Embodiment 3

[0035] Add 10mmol of zinc acetate dihydrate and 0.2mmol of silver nitrate into 40.00mL PEG-200 at 160°C and stir magnetically for 1h to obtain a gray cloudy solution. Cool naturally to room temperature, centrifuge the product, separate the supernatant sol clear liquid and precipitate, wash the obtained precipitate three times with secondary water and absolute ethanol, and dry in an oven at 80°C. The product was then sealed for further characterization.

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Abstract

The invention belongs to the technical field of ZnO nano-composite materials, and discloses an Ag / ZnO nano-composite, a preparation method thereof and an application of the composite. The method includes the steps: adding zinc acetate dihydrate and silver nitrate into polyethylene glycol, and performing reaction; cooling obtained reaction liquid to indoor temperature after reaction is finished, and centrifugally separating; washing and drying obtained sedimentation to obtain the Ag / ZnO nano-composite. According to the method, by the aid of solvation and stabilization of the polyethylene glycol, the zinc acetate dihydrate and the silver nitrate serve as raw materials, and the Ag / ZnO nano-composite with good dispersibility is prepared by the aid of a one-step method. The method is moderate in reaction condition, simple to operate, rapid, free from pollution, high in production rate, green and environmentally friendly, the raw materials are low in price and easy to obtain, the Ag / ZnO nano-composite is solid powder, conveniently saved and further used, excellent photocatalytic performance is achieved under visible light irradiation, and photocatalytic activities of the Ag / ZnO composites obtained under different silver-zinc mole ratios are superior to those of market photocatalyst P25 and pure ZnO.

Description

technical field [0001] The invention belongs to the technical field of ZnO nanocomposite materials, in particular to an Ag / ZnO nanocomposite and its preparation method and application. Background technique [0002] Nano-ZnO is a new multifunctional inorganic material. As the grain size decreases to the nanometer level, volume effects, surface effects, quantum size effects, macroscopic quantum tunneling effects, and crystal structure changes will occur. In recent years, it has been found that it has unparalleled application value in the fields of optics, electronics, chemical industry, ceramics, medicine, biology, textiles and so on. Among them, as a photocatalyst, due to the characteristics of small particles and large specific surface area of ​​nano-ZnO, its surface active centers are numerous, and its catalytic activity is much higher than that of traditional catalysts. In addition, it does not need to be attached to an inert carrier and can be directly placed in a liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66B82Y30/00B82Y40/00C02F1/30A01N59/16A01P1/00C02F101/38
CPCA01N59/16B82Y30/00B82Y40/00C02F1/30B01J23/66C02F2101/38C02F2305/10B01J35/40B01J35/39A01N2300/00Y02W10/37
Inventor 谢新媛詹佩张艳丽郑文杰
Owner JINAN UNIVERSITY
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