Study On Preparation Of Graphene By Solvothermal Method And Its Combination With Microwave

Graphene is composed of single-layer hexagonal cellular carbon atoms honeycomb two-dimensional crystal. "Graphene(GNS)" which means the layer number is less than 10 layers of graphite flake, only it can show the unique properties of GNS, and the layer number of flake graphite and graphite properties of more than 10 no difference, so often called layer number is less than 10 layers graphite flake graphene. Due to the uniqueness of its structure, it has some excellent properties, performance in mechanical property, optical property and electrical property, etc., these excellent performance and is very thin and has great market potential.At present there are many ways such as preparation of graphene and mechanical stripping method, oxidation-reduction way, SiC heating stripping way, etc, produced by chemical modification methods of a large number of pieces of graphene. Both methods use a highly oriented pyrolytic graphite as starting materials, and refer to a great of preparation work. Based on the direct synthesis of carbon nanotubes in g level based on the number of using ethanol and sodium common laboratory reagents and the reaction intermediates, and then the thermal decomposition of a bottom-up approach, produce a series of mild graphite piece by ultrasonic dispersing fusion. can produce large amounts of graphene samples of graphite precursor, cheap method.Using solvent hot method to synthesize graphene, not only can get a lot preparation of graphene, also to be able to use more cleany friendly raw materials, reduce pollution, and the experimental conditions claim is not high. The solvent hot method and other methods to synthesize graphene combination method of the preparation of graphene will become a new hot spot.This article through to the solvent hot method, the researches on the mechanism of the preparation of graphene is discussed the possibility of the combined with microwave structure:1) contrast analyzed how to utilize the optical microscope to directly observe the graphene.2) in the moving of graphene on copper foil to silicon, using FeCl3 solution to add a small amount of hydrochloric acid, analyzed how to shorten the reaction time, faster transfer onto silicon wafers.3) using solvent hot method to synthesize graphene, as a special autoclave using solvent hot method in the synthesis of.4) using solvent hot method is synthesis of the precursor of graphene, need fast pyrolysis on graphene precursor to get graphene, choose a more appropriate temperature, pressure, time and pyrolysis temperature was able to get better quality of graphene.5) microwave processing solvent thermal synthesis of graphene precursor, some solvent hot method to produce graphene precursor in Ar gas on modified microwave irradiation of microwave oven, and then using SEM, optical microscope, the results were characterized decided how much heating time is appropriate, and analysis the result of the experiment.