Preparation method and application of graphene/tin oxide nano composite material

Abstract

The invention relates to the field of preparation and application of a nano composite material and particularly relates to a preparation method and an application of a graphene / tin oxide nano composite material. The preparation method comprises the following steps: (1) dissolving 2-2.5 parts of tin tetrachloride or tin dichloride into methanol and carrying out ultrasonic assistance to sufficiently dissolve; then adding 0.0005-0.001 part of graphene oxide; carrying out ultrasonic treatment for 30-45 minutes and adding 0.05-0.06 part of cetyl trimethyl ammonium bromide to be mixed sufficiently; adjusting the pH (Potential of Hydrogen) of a solution to 9 by using ammonia water; continuing to carry out the ultrasonic treatment for 30-45 minutes, wherein the mass / volume ratio of the tin tetrachloride or the tin dichloride to the methanol is 5% (w / v); (2) putting a mixed solution obtained by the step (1) into a reaction kettle and carrying out a constant-temperature reaction at 140-150 DEG C for 18-20 hours; after cooling the reaction kettle to room temperature, taking out reactants; centrifuging, washing and drying to obtain the graphene / tin oxide nano composite material.

Description

technical field [0001] The invention relates to the preparation and application fields of nanocomposite materials, in particular to a preparation method and application of graphene / tin oxide nanocomposite materials. Background technique [0002] At present, the methods for preparing graphene-metal oxide composite materials mainly include: (1) spray pyrolysis deposition method. Zhang et al. synthesized graphene / tin oxide composites by spray pyrolysis deposition method. relatively strict, and the production cost is relatively high; (2) Microwave irradiation / radiation method, Yan et al. prepared graphene / cobalt tetroxide composite by microwave radiation method. This method is relatively simple to prepare, but the operation is relatively dangerous. The prepared composite Nanoparticles cannot be uniformly dispersed on the surface of graphene; (3) Inkjet printing method, manga et al. used inkjet printing method to prepare graphene / titanium dioxide photoconductive film composite, ...

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Problems solved by technology

[0002] At present, the methods for preparing graphene-metal oxide composite materials mainly include: (1) spray pyrolysis deposition method, Zhang et al. synthesized by spray pyrolysis deposition method (2) Microwave irradiation / radiation method, Yan et al prepared graphene / cobalt tetroxide composite by microwave radiation method, This method is relatively simple to prepare, but the operation is relatively dangerous, and the nanoparticles in the prepared composite cannot be uniformly dispersed on the surface of graphene; (3) Inkjet printing method, manga et al. prepared graphene by inkjet printing method. / TiO2 photoconductive film composite, this method has strict requirements on equipment, and the operation is cumbersome; (4) Molecular grafting method, Tang et al. prepared graphene / TiO2 photoconductive film by molecular grafting method. Strict control, poor experimental reproducibility, and difficult operation; (5) hydrothermal method, which is simple and easy to implement, and has good safety. It is a relatively well-developed method for preparing graphene and metal oxide composites

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