Preparation method of silver sulfide/silver phosphate/graphene oxide composite photocatalyst

A graphene composite and photocatalyst technology, which is applied in the field of photocatalytic materials, can solve the problems of low degradation rate and poor stability of composite photocatalysts, and achieve the effects of improving separation, improving photocatalytic degradation performance, and reducing solubility
CN110694655APending Publication Date: 2020-01-17CHANGCHUN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGCHUN UNIV OF TECH
Publication Date
2020-01-17

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Abstract

The invention relates to a preparation method of a silver sulfide / silver phosphate / graphene oxide composite photocatalyst, and belongs to the field of photocatalytic materials. The preparation methodis characterized in that an ethanol aqueous solution is used as a solvent. The preparation method comprises following steps: under strong agitation, respectively preparing a silver nitrate solution and a sodium dihydrogen phosphate solution; preparing graphene oxide according to an improved Hummers method, carrying out ultrasonic treatment to obtain a graphene oxide suspension, sequentially addingthe silver nitrate solution, a sodium sulfide solution and the graphene oxide suspension into the sodium dihydrogen phosphate solution, and carrying out centrifugal drying to obtain the silver sulfide / silver phosphate / graphene oxide composite photocatalyst. The preparation process is simple, raw materials are cheap and easy to obtain, the preparation period is short, and the prepared material isstable in chemical property. The photocatalyst prepared by the invention has photocatalytic activity in a relatively wide wavelength range, can be used for photocatalytic degradation of organic pollutants under visible light or natural light radiation, and has a very good application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to the preparation and application of a silver sulfide / silver phosphate / graphene oxide composite photocatalyst. Background technique

[0002] In recent decades, with the rapid economic development, environmental problems, especially water pollution, have become a severe challenge that people face. Semiconductor photocatalysis technology has become one of the most promising technologies to solve environmental problems because it can use sunlight to degrade various organic and inorganic pollutants. Among various semiconductor photocatalysts, silver-based semiconductor photocatalytic materials have been widely used in recent years, silver phosphate (Ag 3 PO 4 ), with a suitable band gap, has attracted considerable attention due to its high photocatalytic activity in the photocatalytic degradation of organic pollutants driven by visible light.

[0003] Ho...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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