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A kind of preparation method of titanium oxide nanoparticle/multilayer graphene composite material

A technology of multi-layer graphene and nano-particles, 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: 2022-03-01
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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  • A kind of preparation method of titanium oxide nanoparticle/multilayer graphene composite material

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[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 method for preparing a titanium oxide nanoparticle / multilayer graphene composite material. Nano-titanium oxide particles are used as raw materials, and nano-titanium oxide is added to a mixed solution of DMF and water, and dilute nitric acid solution is added. Under the condition of water bath at ℃, organic functional groups are generated on the surface of nano-titanium oxide, and nano-titanium oxide is uniformly deposited on the surface of multi-layer graphene through the molecular force on the surface of multi-layer graphene, and finally uniform composite titanium oxide nanoparticles / multi-layer graphene are obtained composite material. The preparation process of the invention is simple and suitable for industrialized 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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18C01B32/184C01G23/047
CPCB01J21/18B01J35/004C01G23/047C01B32/184
Inventor 徐军明章林娟赵炜翔李苗杨成明
Owner HANGZHOU DIANZI UNIV
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