Surface nano-nickel particle modified graphene nano material and preparation method thereof

A nanomaterial, graphene technology, applied in the field of nanomaterial preparation to achieve excellent soft magnetic effect

Inactive Publication Date: 2012-07-18
BEIHANG UNIV
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  • Abstract
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Problems solved by technology

At present, the research work on the modification of inorganic functionalized graphene at home and abroad uses a large number of in-situ co-reduction

Method used

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  • Surface nano-nickel particle modified graphene nano material and preparation method thereof
  • Surface nano-nickel particle modified graphene nano material and preparation method thereof
  • Surface nano-nickel particle modified graphene nano material and preparation method thereof

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[0026] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0027] The present invention provides a method for preparing graphene nanomaterials modified by surface nano nickel particles, which combines figure 2 The chemical reaction process diagram shown, the specific steps are as follows:

[0028] Step 1: Preparation of graphite oxide:

[0029] 1. Take graphite, KNO 3 , Mixed with concentrated sulfuric acid, add KMnO at 35~40℃ 4 , Magnetic stirring reaction for more than 6h; then slowly add deionized water to the mixture, and adjust the temperature of the water bath to 60℃~70℃ for heating in the water bath. After reacting for 25~40min, add deionized water to it and continue the reaction for 4~ 5min; then add 30% H dropwise to the mixed liquid 2 O 2 , Until the mixed liquid becomes bright yellow mixed liquid; the ratio of raw material addition is 1.5g KNO per 1.5g graphite 3 , 69ml concentrated sulfuric acid, 9.0g KMnO 4 ,...

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Abstract

The invention discloses a surface nano-nickel particle modified graphene nano material and a preparation method of the nano material, belonging to the field of nano material preparation technology. The preparation method can be used for preparing surface nano-nickel particle modified graphene by the steps of preparation of graphite oxide, preparation of graphene oxide and pretreatment. According to the invention, the surface nano-nickel particle modified graphene is prepared by a chemical plating method, so that the particle size and the crystal form of surface nano-nickel particles can be effectively controlled, and the graphene oxide part can be reduced when metal particles are deposited; and graphene sheet layers are prevented from being stacked again by the deposition of nickel particles on the surface of the graphene; and the graphene has excellent soft magnetism so as to be magnetized under the minimal additional magnetic field.

Description

Technical field [0001] The invention belongs to the technical field of nano material preparation, and specifically relates to a graphene nano material modified by surface nano nickel particles and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional allotrope of carbon with a theoretical thickness of only 0.35nm, which is the thinnest two-dimensional material found so far. Graphene is a two-dimensional crystal structure with closely packed monoatomic layers, in which carbon atoms are periodically arranged in the graphene plane in the form of six-membered rings, and the carbon atoms are connected by sp2 hybridization. This special structure makes graphene exhibit many excellent physical and chemical properties. For example, the strength of graphene is as high as 130GPa, which is more than 100 times that of steel and the highest among the tested materials; its carrier mobility is 1.5×104cm 2 ·V -1 ·S -1 , It is 2 times that of indium antimonide ...

Claims

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Application Information

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IPC IPC(8): C01B31/04B82Y40/00H01F1/12C01B32/19
Inventor 肇研段跃新王琰鲍天骄李翔孙健明
Owner BEIHANG UNIV
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