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Preparation method of nano ZnO/graphene composite material

A composite material, graphene technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of low yield and long reaction time, and achieve high yield and short reaction time. , The effect of uniform and stable structure

Inactive Publication Date: 2015-12-09
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the process of this patent is simple and the structure of the prepared graphene-based nano-zinc oxide composite material is stable, the reaction time is long and the yield is relatively low

Method used

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  • Preparation method of nano ZnO/graphene composite material
  • Preparation method of nano ZnO/graphene composite material
  • Preparation method of nano ZnO/graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 10 mL of nano-ZnO solution with a concentration of 1 mg / mL was uniformly mixed with 10 mL of CRGO (chemically reduced graphene oxide solution) with a concentration of 0.1 mg / mL. Then the mixed solution was put into an ultrasonic instrument, and the ultrasonic reaction was performed for 2 hours under the conditions of a frequency of 40KHz and a power of 150W. After the reaction, the product is centrifuged and washed to obtain a nanometer ZnO-graphene composite material.

[0024] The obtained nanometer ZnO-graphene composite material is carried out scanning electron microscope, and its result is as follows figure 1 As shown, it is found that the composite material forms a three-dimensional microporous shape, and the nano-ZnO particles are coated inside the graphene, forming a shape similar to a pea pod.

[0025] The composite material was characterized by ultraviolet-visible light absorption spectrum, and the results were as follows: figure 2 As shown, it is found that...

Embodiment 2

[0027] Mix 10 mL of nano-ZnO solution with a concentration of 5 mg / mL with 10 mL of CRGO with a concentration of 1 mg / mL. Then the mixture was put into an ultrasonic instrument, and the ultrasonic reaction was performed for 1 hour under the conditions of a frequency of 40KHz and a power of 200W. After the reaction, the product is centrifuged and washed to obtain a composite material.

Embodiment 3

[0029] Mix 10 mL of 0.02 mg / mL nano-ZnO particle solution with 10 mL of 0.01 mg / mL CRGO evenly. Then the mixed solution was put into an ultrasonic instrument, and the ultrasonic reaction was performed for 4 hours under the condition of a frequency of 40KHz and a power of 40W. After the reaction, the product is centrifuged and washed to obtain a composite material.

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Abstract

The invention relates to a preparation method of a nano ZnO / graphene composite material. The preparation method includes following steps: (1) mixing a nano zinc oxide water solution with a chemically-reduced graphene oxide solution uniformly to prepare a mixture solution, wherein the mass ratio of nano zinc oxide to chemically-reduced graphene oxide is 1-100:1; (2) performing an ultrasound reaction to the mixture solution in an ultrasound instrument to obtain a reaction product; and (3) separating and washing the reaction product to obtain the nano ZnO / graphene composite material. The nano ZnO / graphene composite material is uniform in structure, is excellent in ultraviolet absorption performance, is simple in preparation method and device and is easy to achieve large-scale production.

Description

technical field [0001] The invention relates to a method for preparing a nanocomposite material, in particular to a method for preparing a nanometer ZnO-graphene composite material. Background technique [0002] Since graphene was first reported by British scientist Geim in 2004, it has quickly become a research hotspot at home and abroad. Zinc oxide is a multifunctional semiconductor material with a wide band gap. It not only has excellent chemical and physical properties, but also has other excellent performances. Zinc oxide has good electromechanical coupling performance, chemical stability and thermal stability. etc. Graphene zinc oxide composite materials may have both the advantages of graphene and nano-zinc oxide, such as excellent light transmittance, electrical conductivity, and high photoelectric conversion rate and electron transfer rate, etc., in electrochemical, photoelectric conversion devices, batteries or Capacitors and other fields have broad application p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01G9/02B82Y30/00
Inventor 张艳王琳琳郝惠莲林青
Owner SHANGHAI UNIV OF ENG SCI
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