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Preparation method of titanium oxide nanoparticle/multilayer graphene composite material

A multi-layer graphene and nanoparticle technology, applied in the field of materials, can solve the problems of low dispersion between nano-TiO2 particles and graphene, high cost of graphene oxide preparation, and low preparation efficiency, so as to facilitate industrial production and low cost , The effect of high production efficiency

Active Publication Date: 2019-09-06
HANGZHOU DIANZI UNIV
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Problems solved by technology

The in-situ preparation mainly adopts hydrothermal method and sol-gel method. The metal ions in the solution are adsorbed on the surface of graphene oxide, and composite materials are obtained by heating treatment. However, the methods currently used are low in preparation efficiency.
The physical mixing method used is to mix nano-TiO 2 and graphene oxide in solution by simple mixing and stirring, the nano-TiO obtained by this method 2 The dispersion of particles and graphene is not high
Moreover, the preparation cost of graphene oxide is relatively high, and the environmental pollution is relatively large.

Method used

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  • Preparation method of titanium oxide nanoparticle/multilayer graphene composite material
  • Preparation method of titanium oxide nanoparticle/multilayer graphene composite material
  • Preparation method of titanium oxide nanoparticle/multilayer graphene composite material

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Embodiment Construction

[0026] In order to better illustrate the process and solutions of the present invention, the following inventions will be further described in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] In order to solve the technical problems existing in the prior art, see figure 1 , shows that the present invention proposes a kind of nano-TiO 2 A flow chart of the preparation method steps of particles evenly distributed on the multilayer graphene, comprising the following steps:

[0028] S10, measure DMF and deionized water with a volume ratio of 8:2, and mix them uniformly as mixed solvent A.

[0029] S20, weigh the expanded graphite, add it to the mixed solvent A, and obtain the multilayer graphene dispersion C after ultrasonication for 3 hours, the concentration of the expanded graphite relative to the solvent A is 0.5-2 mg / mL.

[0030] S...

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Abstract

The invention discloses a preparation method of a titanium oxide nanoparticle / multilayer graphene composite material. The preparation method adopting nanometer titanium oxide particles as a raw material comprises the following steps: adds nanometer titanium oxide to a DMF and water mixed solution, adding a dilute nitric acid solution, generating organic functional groups on the surface of the nanometer titanium oxide under a 80 DEG C water bath condition, and uniformly depositing the nanometer titanium oxide on the surface of multilayer graphene under the action of the molecular force of the surface of the multilayer graphene to finally obtain the uniformly-compounded titanium oxide nanoparticle / multilayer graphene composite material. The preparation method of the invention is simple, andis suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a method for preparing a titanium oxide nanoparticle / multilayer graphene composite material. The material of the invention has potential applications in the fields of photocatalysis, environmental treatment, energy storage and the like. Background technique [0002] Nano-TiO 2 Particles can be used as catalysts, energy storage materials, and pigments. But nano TiO 2 Small particles, large surface area, easy to agglomerate and lead to failure. Therefore, nano-TiO 2 Loaded on other carriers, TiO can be maintained 2 Dispersion, improve service life. Graphene is a good carrier with a very stable structure and excellent electrical transport properties, mechanical properties, and surface chemical properties. [0003] Currently, graphene and TiO 2 The main preparation methods of composites are in-situ preparation and physical mixing. The in-situ preparation mainly adopts hydr...

Claims

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Application Information

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IPC IPC(8): B01J21/18C01B32/184C01G23/047
CPCB01J21/18C01G23/047C01B32/184B01J35/39
Inventor 徐军明章林娟赵炜翔李苗杨成明
Owner HANGZHOU DIANZI UNIV
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