Silver/graphene compound material and application

A composite material and graphene technology, which is applied in chemical/physical processes, light water/sewage treatment, catalyst activation/preparation, etc., can solve problems such as environmental protection and complicated preparation process, and achieve avoiding the use of toxic drugs and good catalysis The effect of action

Inactive Publication Date: 2012-10-03
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical preparation process disclosed in the above documents is complicated or uses the toxic drug sodium borohydride, which is not environmentally friendly

Method used

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  • Silver/graphene compound material and application
  • Silver/graphene compound material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 A kind of silver / graphene composite material, preparation steps are:

[0033] 1.1 Preparation of graphene oxide ethanol colloidal suspension: firstly, graphene oxide was prepared by Hume method using flake graphite powder as raw material, firstly cleaned by centrifugation with twice distilled water, then dispersed in absolute ethanol, and ultrasonically dispersed for 30 min. The amount of graphene oxide relative to absolute ethanol is 50mg-50mL.

[0034] 1.2 Preparation of silver / graphene oxide composite: under vigorous stirring, add silver nitrate to graphene oxide, stir for 5 min, and sonicate for 30 min 1.3 Microwave in situ reduction of silver / graphene oxide to obtain silver / graphene composite things. The amount of silver nitrate relative to the graphene oxide ethanol colloidal suspension is 50mg-50mL.

[0035]1.3 In situ reduction of silver / graphene oxide composite by microwave method to obtain silver / graphene composite material: put the silver / graph...

Embodiment 2

[0037] Example 2 A silver / graphene composite material, the preparation steps are as in Example 1, but the difference from Example 1 is that the amount of graphene oxide relative to absolute ethanol in step 1.1 is 40mg-50mL. Step 1.2 The amount of silver nitrate relative to the graphene oxide ethanol colloidal suspension is 40mg-50mL. Step 1.1 Ultrasonic dispersion time is 50min. Step 1.2 Stirring time 3min, ultrasonic treatment 20min.

Embodiment 3

[0038] Example 3 A silver / graphene composite material, the preparation steps are as in Example 1, but the difference from Example 1 is that the amount of graphene oxide relative to absolute ethanol in step 1.1 is 60mg-50mL. Step 1.2 The amount of silver nitrate relative to the graphene oxide ethanol colloidal suspension is 60mg-50mL. Step 1.1 Ultrasonic dispersion time is 20min. Step 1.2 Stirring time 10min, ultrasonic treatment 40min.

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Abstract

The invention aims at providing a silver / graphene compound material. The silver / graphene compound material is prepared by the following method: (1) preparing graphene oxide ethanol colloidal suspension liquid; (2) preparing silver / graphene oxide compound; and (3) carrying out in situ reduction on the silver / graphene oxide compound by a microwave method so as to obtain the silver / graphene compoundmaterial. The result of the catalytic reaction of the silver / graphene compound material on rhodamine B shows that the silver / graphene compound material has good catalytic effect and can be applied inthe aspect of environmental protection.

Description

technical field [0001] The invention relates to the technical field of inorganic synthesis of photocatalytic functional materials, in particular to a silver / graphene composite material and its application. Background technique [0002] As a new type of carbon support material, graphene sheet has attracted the attention of many researchers due to its excellent electrical and mechanical properties and high aspect ratio. At present, the application of this material in the fields of supercapacitors, field emission, nanoelectronics, etc. has been widely discussed (see Science 2008, 320, 356.; Nano Lett. 2008, 8, 1704.). In addition, due to its good electrical conductivity and large specific surface area, it is expected that it will have broad application prospects as catalyst support materials. However, how to obtain graphene composites through a simple and non-polluting synthetic method has become a very challenging issue. [0003] Rhodamine B (Rh. B), also known as rose re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/50B01J37/34B01J37/16C02F1/30
Inventor 邵鑫孟宪华蒲锡鹏李文智刘雪华王敏
Owner LIAOCHENG UNIV
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