Preparation method for nano-zinc oxide modified graphene hybrid material

A technology of nano-zinc oxide and zinc hydroxide, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of effectively controlling graphene agglomeration, achieve inhibition of agglomeration and overlapping, convenient operation, and energy The effect of low consumption

Active Publication Date: 2014-10-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these preparation methods have a common problem, that is, they cannot effectively control the agglomeration of graphene during the preparation of graphene-zinc oxide composites.
At the same time, the application of the prepared graphene / zinc oxide composite material is limited to the research of optoelectronic materials.

Method used

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  • Preparation method for nano-zinc oxide modified graphene hybrid material
  • Preparation method for nano-zinc oxide modified graphene hybrid material
  • Preparation method for nano-zinc oxide modified graphene hybrid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of graphene oxide suspension: 0.5 g of graphite oxide was dispersed in water, ultrasonicated for 1 hour, and centrifuged to obtain a brownish yellow graphene oxide suspension.

[0035] (2) Preparation of zinc hydroxide-graphene oxide sol: 3.0g (0.01mol) of zinc sulfate is dissolved in distilled water to make a clear zinc sulfate aqueous solution, and added to the graphene oxide suspension prepared in step (1) Mix well. Afterwards, 0.735 g (0.021 mol) of ammonia water was added dropwise into the mixed solution, and continuously stirred and sonicated for 0.5 h to obtain a brown-yellow zinc hydroxide graphene oxide suspension.

[0036] (3) Preparation of zinc hydroxide-graphene gel: the zinc hydroxide-graphene oxide suspension prepared in step (2) was irradiated for 20min at an irradiation intensity of 10 joules / cm2, and aged for 12h at room temperature , to obtain a certain consistency of zinc hydroxide-graphene oxide gel. Then, excess tea polyphenols we...

Embodiment 2

[0040](1) Preparation of graphene oxide suspension: 0.5 g of graphite oxide was dispersed in water, ultrasonicated for 1 hour, and centrifuged to obtain a brownish yellow graphene oxide suspension.

[0041] (2) Preparation of zinc hydroxide-graphene oxide sol: Dissolve 5.0g (0.0174mol) of zinc sulfate in distilled water to make a clear zinc sulfate aqueous solution, and add to the graphene oxide suspension prepared in step (1) Mix well. Afterwards, 1.3706g (0.03916mol) of ammonia water was added dropwise into the mixed solution, and continuously stirred and sonicated for 0.5h to obtain a brown yellow zinc hydroxide graphene oxide suspension.

[0042] (3) Preparation of zinc hydroxide-graphene gel: the zinc hydroxide-graphene oxide suspension prepared in step (2) was irradiated for 20min at an irradiation intensity of 10 joules / cm2, then aged for 12h at room temperature, A zinc hydroxide-graphene oxide gel with a certain consistency is obtained. Then, excess tea polyphenols w...

Embodiment 3

[0046] (1) Preparation of graphene oxide suspension: 0.5 g of graphite oxide was dispersed in water, ultrasonicated for 1 hour, and centrifuged to obtain a brownish yellow graphene oxide suspension.

[0047] (2) Preparation of zinc hydroxide-graphene oxide sol: Dissolve 8.0g (0.0279mol) of zinc sulfate in distilled water to make a clear zinc sulfate aqueous solution, and add to the graphene oxide suspension prepared in step (1) Mix well. Afterwards, 2.2460 g (0.06417 mol) of ammonia water was added dropwise into the mixed solution, and the mixture was continuously stirred and sonicated for 0.5 h to obtain a brown-yellow zinc hydroxide graphene oxide suspension.

[0048] (3) Preparation of zinc hydroxide-graphene gel: the zinc hydroxide-graphene oxide suspension prepared in step (2) was irradiated for 20min at an irradiation intensity of 10 joules / cm2, then aged for 12h at room temperature, A zinc hydroxide-graphene oxide gel with a certain consistency is obtained. Then, exce...

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Abstract

The invention discloses a preparation method for a nano-zinc oxide modified graphene hybrid material. The method includes: preparing a graphene oxide suspension solution; dissolving a zinc salt in water, adding the solution into the graphene oxide suspension solution, conducting ultrasonic treatment, adding an alkali reagent dropwise to obtain a zinc hydroxide graphene oxide suspension solution; under ultraviolet light irradiation, performing static aging to obtain a zinc hydroxide-graphene oxide gel, adding an excessive reducing agent, carrying out reaction, using water and ethanol to conduct repeated washing, and performing drying to obtain a zinc hydroxide-graphene dry gel; placing the gel in a muffle furnace, and conducting treatment at high temperature to obtain the gray nano-zinc oxide modified graphene hybrid material. The nano-zinc oxide obtained by the invention has a large specific surface area, can effectively promote vulcanization crosslinking, greatly reduces the using amount of zinc oxide, and is of great importance to full utilization of zinc resources and ecological economy. At the same time, without affecting the performance of graphene, the method is in favor of further expanding the potential application scope of graphene.

Description

technical field [0001] The invention relates to a preparation method of a graphene hybrid material, in particular to a preparation method of a nano zinc oxide modified graphene hybrid material. Background technique [0002] Since the British scientist Andrew Geim et al. prepared graphene in 2004 by stripping highly oriented pyrolytic graphite with tape micromechanics, graphene, as a new type of nano-filler, has attracted much attention due to its excellent mechanical properties, electrical properties and thermal conductivity. There is an extremely wide range of research interests. So far, due to the ability to prepare graphene in large quantities, the redox method is the main method for preparing graphene. However, due to the strong interlayer van der Waals force, the reduced graphene oxide sheets are prone to agglomeration, resulting in the loss of the excellent properties of graphene. [0003] As we all know, zinc oxide is widely used in the chemical industry, rubber ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01G9/02B82Y30/00
Inventor 刘岚林勇李智军陈耀燃罗远芳
Owner SOUTH CHINA UNIV OF TECH
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