A kind of preparation method of zinc oxide nanometer hollow sphere/graphene composite material

A zinc oxide nanometer and composite material technology is applied in the field of preparation of graphene composite materials, and can solve the problems of in-situ growth of zinc oxide nanometer hollow spheres, inability to prepare zinc oxide nanometer hollow spheres/graphene composite materials, etc. The effect of mass production, low price, and simple reaction equipment

Inactive Publication Date: 2017-03-08
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing one-step hydrothermal method cannot be used to make zinc oxide nanometer hollow spheres grow on graphene sheets in situ and cannot prepare nanoscale zinc oxide nanometer hollow spheres / graphene composite materials, and Provide a preparation method of zinc oxide nano hollow sphere / graphene composite material

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  • A kind of preparation method of zinc oxide nanometer hollow sphere/graphene composite material
  • A kind of preparation method of zinc oxide nanometer hollow sphere/graphene composite material
  • A kind of preparation method of zinc oxide nanometer hollow sphere/graphene composite material

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specific Embodiment approach 1

[0028] Specific embodiment one: this embodiment is a kind of preparation method of zinc oxide nanometer hollow sphere / graphene composite material and is finished according to the following steps:

[0029] 1. Add the organic zinc salt into deionized water, and then stir for 5min to 10min at a stirring speed of 300r / min to 500r / min to obtain an organic salt solution; mix the graphene oxide solution and the organic salt solution, and stir at a stirring speed of Stir at 300r / min to 500r / min for 0.5h to 1h, then add alkali source solution, then stir and react at a stirring speed of 300r / min to 500r / min for 0.5h to 2h to obtain a reaction solution;

[0030] The concentration of the organic zinc salt solution described in step 1 is 0.02mol / L~0.07mol / L;

[0031] The concentration of the graphene oxide solution described in step 1 is 0.1mg / mL~5mg / mL;

[0032] The volume ratio of the graphene oxide solution described in step 1 and the organic zinc salt solution is (3~20):80;

[0033] ...

specific Embodiment approach 2

[0044] Embodiment 2: This embodiment differs from Embodiment 1 in that the organozinc salt described in step 1 is zinc acetate, zinc carboxyacetate or zinc acetylacetonate. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0045] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the graphene oxide in the graphene oxide solution described in step 1 is prepared by the Hummers method. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method for a zinc oxide hollow nanosphere / graphene composite material, in particular to a preparation for a graphene composite material, and aims to solve the problems that in the prior art, zinc oxide hollow nanospheres cannot be grown on graphene lamellas according to a one-step hydrothermal method and a nano-scale zinc oxide hollow nanosphere / graphene composite material cannot be prepared. The preparation method for the zinc oxide hollow nanosphere / graphene composite material comprises the following steps: (1) preparing a reacting liquid; (2) carrying out a hydrothermal reaction to prepare a reactant; (3) carrying out washing and drying to obtain the zinc oxide hollow nanosphere / graphene composite material. The zinc oxide hollow nanosphere / graphene composite material prepared according to the one-step hydrothermal method has the advantages that the zinc oxide hollow nanospheres can be uniformly and densely grown on the surface of graphene in an in-situ manner, and have an average particle diameter of 25 nm. According to the preparation method for the zinc oxide hollow nanosphere / graphene composite material, the zinc oxide hollow nanosphere / graphene composite material can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a graphene composite material. Background technique [0002] Zinc oxide is an n-type semiconductor material, which has the advantages of large exciton binding energy (60meV at room temperature), low price, safety and non-toxicity, and is widely used in biosensors, solar cells, and photocatalysis. However, since the ZnO band gap is 3.37eV, the photocatalytic performance can only be exerted when the light with a wavelength of less than 368nm is irradiated on the surface of nano-ZnO. A large number of studies have shown that the combination of zinc oxide and graphene can improve the photocatalytic performance of zinc oxide to a certain extent. Because graphene is a carbon atom sp 2 The hexagonal honeycomb lattice planar film composed of hybrid orbitals has the advantages of good optical, electrical and mechanical properties, high electron mobility and high specific surface area, so it has become a commonl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06C02F1/30
Inventor 田家宇宋亚丽刘冬梅高珊珊齐晶瑶崔福义
Owner HARBIN INST OF TECH
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