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Preparation method of graphene-based nanocomposite

A nanocomposite, graphene-based technology, applied in electrical components, battery electrodes, circuits, etc., can solve problems such as difficulty in quantitatively controlling the loading of metal oxides

Inactive Publication Date: 2013-01-16
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem that the method for preparing graphene-based nanocomposites in the prior art is difficult to quantitatively control the loading of metal oxides on the surface of graphene, and provides a method for preparing graphene-based nanocomposites

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specific Embodiment approach 1

[0022] Specific embodiment one: the preparation method of a kind of graphene-based nano-composite material of this embodiment is specifically prepared according to the following steps:

[0023] 1. Graphene oxide was prepared by modified Hummers method;

[0024] Two, carry out XPS test analysis to the graphene oxide prepared in step 1, and fit C1s peak, obtain the percentage composition of the amount of substance of graphene oxide surface C-C, C-O, C=O and C(O)O respectively a , b, c and d, the percentage composition of the amount of substances containing oxygen-containing functional groups on the surface of graphene oxide is drawn as b+c+d;

[0025] 3. Use an ultrasonic cleaner to disperse the graphene oxide prepared in e mol step 1 into deionized water, and prepare a graphene oxide dispersion with a concentration of 0.1mg / mL~10mg / mL, wherein the control frequency is 40kHz~60kHz, Dispersion time is 30min~300min;

[0026] 4. Weighing The precursor of the metal oxide intende...

specific Embodiment approach 2

[0029] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 3, a graphene oxide dispersion with a concentration of 0.2 mg / mL-8 mg / mL is prepared. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the precursor of the metal oxide in step 4 is FeCl 2 4H 2 O, Co(NO 3 ) 2 ·6H 2 O or SnCl 2 2H 2 O and Mn(CH 2 COO) 2 4H 2 O. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a composite, in particular to a preparation method of a graphene-based nanocomposite. The preparation method of the graphene-based nanocomposite aims to solve the problem that a preparation method of a graphene-based nanocomposite is difficult to quantitatively control load capacity of metallic oxides on the graphene surface in the prior art. The preparation method includes the steps of 1, preparation of oxidized graphene; 2, XPS (X-ray photoelectron spectroscopy) test analysis; 3, preparation of oxidized graphene dispersion liquid; 4, preparation of precursor solution; 5, reaction; and 6, washing and drying. The types and the quantity of oxygen-containing functional groups on the surface of the oxidized graphene are determined by means of XPS testing and C1s diffraction peak fitting analysis, and the load capacity of the metallic oxides on the graphene surface can be quantitatively controlled. The graphene-based nanocomposite prepared by the preparation method can be applied to the fields of energy storage, photocatalysis and sensors.

Description

technical field [0001] The invention relates to a preparation method of a composite material. Background technique [0002] Graphene is a two-dimensional crystal composed of a single layer of carbon atoms tightly packed, and is the basic unit of carbon allotropes including fullerenes, carbon nanotubes, and graphite. As a nano-carbon with excellent similar properties, independently existing single-layer graphene has been widely valued by research institutions around the world since it was first obtained by mechanical exfoliation in 2004 by Geim's research team at the University of Manchester. Graphene exhibits excellent properties in heat, electricity, and light, and has become a research hotspot in the fields of chemistry, materials, and physics in recent years. Graphene-based nanocomposites have more unique properties than graphene, which further expands the application field of graphene and attracts more and more researchers' attention. [0003] Graphene and metal oxide ...

Claims

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Application Information

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IPC IPC(8): H01M4/583H01M4/48
CPCY02E60/12Y02E60/10
Inventor 付长璟赵国刚张海军李爽
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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