Tetrapod-like zinc oxide/graphene composite material and preparation method thereof

A technology of four-needle zinc oxide and composite material, applied in the field of four-needle zinc oxide/graphene composite material and preparation thereof, can solve the problems of graphene oxide agglomeration, low efficiency of four-needle zinc oxide, etc., and avoid agglomeration , improve the effect of photocatalytic activity

Inactive Publication Date: 2013-08-21
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the shortcoming of low catalytic efficienc

Method used

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  • Tetrapod-like zinc oxide/graphene composite material and preparation method thereof
  • Tetrapod-like zinc oxide/graphene composite material and preparation method thereof
  • Tetrapod-like zinc oxide/graphene composite material and preparation method thereof

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Example Embodiment

[0019] A tetrapod-shaped zinc oxide / graphene composite material is graphene nanosheets grown on the surface of tetrapod-shaped zinc oxide.

[0020] One of the preparation methods of a tetrapod-shaped zinc oxide / graphene composite material, the steps include:

[0021] Step 1: Preparation of reaction precursor

[0022] Under the protection of nitrogen, dissolve 2.97g zinc nitrate in 120ml alkaline aqueous dispersion of graphene oxide with a pH value of 8 and a concentration of 0.1mg / ml, stir until completely dissolved, add 120ml anhydrous methanol and 1.2ml poly Ethylene glycol, continue to stir for later use.

[0023] Step 2 Preparation of reaction intermediate

[0024] Put the precursor solution prepared in step 1 into a closed container, and carry out a hydrothermal reaction at 200°C. The reaction time is 6 hours. After natural cooling, it is washed with deionized water and ethanol to neutrality. After drying, zinc oxide / graphite is obtained. Ene intermediates.

[0025] Step three or ...

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Abstract

The invention relates to a tetrapod-like zinc oxide/graphene composite material and a preparation method thereof. The composite material is formed by growing a graphene nano sheet on the surface of tetrapod-like zinc oxide and belongs to the fields of novel micro-nano material and material preparation. The method comprises the following steps of step1, preparing reaction precursor liquor containing zinc nitrate or zinc acetate and oxidized graphene, wherein the pH value is 8 to 13; step 2, carrying out hydrothermal reaction of the precursor liquor prepared in step 1 at the temperature of 100 to 200 DEG C to prepare a reaction midbody; and step 3, calcining the midbody obtained in the step 2 in an environment of 200 to 680 DEG C while controlling the heating rate at 3 to 8 DEG C per minute to obtain the tetrapod-like zinc oxide/ graphene composite material. By adopting the tetrapod-like zinc oxide/graphene composite material and the preparation method thereof, the defect of existing tetrapod-like zinc oxide that the catalyzing efficiency is low and the clustering problem of the oxidized graphene in the reduction process can be solved. The tetrapod-like zinc oxide/graphene composite material is expected to be popularized in the fields such as heat conduction, piezoelectricity, voltage-sensitive, wave absorption, sound absorption, vibration absorption, antibiosis, anti-weeds, catalysis and the like.

Description

technical field [0001] The invention relates to a tetraacicular zinc oxide / graphene composite material and a preparation method thereof, belonging to the field of novel micro-nano materials and material preparation. Background technique [0002] Tetraacicular ZnO is a special form of zinc oxide. It has a regular four-acicular three-dimensional space structure, that is, the whisker has a core, and four needle-like crystals extend radially from the core, and each needle is a single crystal. microfibers. It is precisely because of its unique three-dimensional space structure that it has many special functions, such as heat conduction, piezoelectricity, pressure sensitivity, wave absorption, sound absorption, vibration reduction, antibacterial, anti-algae, catalysis, etc. Utilizing the nano-activity of the four-needle zinc oxide tip, it can efficiently kill and eliminate bacteria and their remains. Adding an appropriate amount of needle-shaped zinc oxide made of composite antib...

Claims

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Application Information

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IPC IPC(8): B01J23/06
Inventor 吴洪鹏王永生何大伟颜鲁婷富鸣许海腾
Owner BEIJING JIAOTONG UNIV
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