Preparation method of graphene-ZnO nanoparticle composite material

A nanoparticle and composite material technology, applied in the field of nanomaterial manufacturing, can solve the problems of high product energy consumption, large ZnO nanoparticle size, complex process, etc., and achieve the effect of reducing the grain size and simple method

Active Publication Date: 2014-01-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the currently disclosed preparation methods, the existing process is complicated and cannot meet the requirements of large-scale preparation, and the energy consumption of the product is relatively high. In addition, the obtained ZnO nanoparticles have a large size

Method used

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  • Preparation method of graphene-ZnO nanoparticle composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The raw materials graphene oxide and zinc chloride are dissolved in deionized water according to the mass ratio of 1:1, mixed evenly by ultrasonic, then centrifuged and cleaned;

[0015] Heat the obtained product in air to 1000 degrees Celsius for 5 seconds, and take out the product after cooling to room temperature to obtain a graphene-ZnO nanoparticle composite material.

[0016] The product was characterized by transmission electron microscopy, and the results were as follows: figure 1 As shown, it can be seen that ZnO nanoparticles are attached to the graphene surface, and the ZnO particle size is less than 10 nm.

Embodiment 2

[0018] The raw material graphene oxide and zinc sulfate are dissolved in deionized water according to the ratio of 10:1 in mass ratio, stirred and mixed evenly, separated by filtration and cleaned;

[0019] The obtained product was heated to 150 degrees Celsius in an oxygen environment for heat treatment for 10 hours, and after the product was cooled to room temperature, it was taken out to obtain a graphene-ZnO nanoparticle composite material.

[0020] The obtained result is similar to Example 1.

Embodiment 3

[0022] The raw material graphene oxide and zinc phosphate are dissolved in deionized water according to the mass ratio of 1:10, and then centrifuged and cleaned after stirring and mixing evenly;

[0023] The obtained product was heated to 500 degrees Celsius in air for heat treatment for 2 hours, and after the product was cooled to room temperature, it was taken out to obtain a graphene-ZnO nanoparticle composite material.

[0024] The obtained result is similar to Example 1.

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Abstract

The invention discloses a preparation method of a graphene-ZnO nanoparticle composite material. The preparation method comprises the following steps: step 1): dissolving raw materials, namely graphene oxide and zinc salt, in water according to a certain mass ratio and uniformly mixing; step 2): separating the graphene oxide from the well mixed liquid, obtained in the step 1, by centrifugation or suction filtration and washing with water or alcohol; and step 3) performing heat treatment on the product, obtained in the step 2, in air or oxygen to get the graphene-ZnO nanoparticle composite material, wherein the zinc salt is one of zinc fluoride, zinc chloride, zinc bromide, zinc sulfate, zinc nitrate, zinc acetate and zinc phosphate, the heat treatment temperature is 150-1000 DEG C, and the heat treatment time is 5s-10h. The preparation method disclosed by the invention is simple, green and environment-friendly, and can effectively reduce the use of chemical reagents.

Description

technical field [0001] The invention relates to the field of nanomaterial manufacturing, in particular to a method for preparing a graphene-ZnO nanoparticle composite material. Background technique [0002] Graphene is a carbon material with a two-dimensional honeycomb structure formed by a single layer of carbon atoms, and has excellent mechanical and electrical properties. At the same time, graphene has a high specific surface area and can be used as a carrier material for nanomaterials. [0003] ZnO nanomaterials have good optical correlation properties and have broad application prospects in solar battery electrode materials and lithium ion battery electrode materials. Graphene-ZnO nanocomposites can suppress the agglomeration of ZnO nanomaterials while maintaining the excellent properties of the material itself, so it has been widely studied. At present, there are many preparation methods for such materials, and the most commonly used method is to mix graphene oxide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01G9/02B82Y30/00C01B32/184
Inventor 陈伟中尹奎波孙立涛
Owner SOUTHEAST UNIV
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