强碱还原法制备石墨烯及其表征  

The Preparation and Characterization of Graphene by Alkali Reduction Method

作　　者：郑海富[1] 马宇明[1] ZHENG Hai-fu(Jiangsu Institute of Metrology(JSIM),Najing 210023,China)

机构地区：[1]江苏省计量科学研究院

出　　处：《长春工程学院学报（自然科学版）》2019年第2期108-111,共4页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：江苏省计量科学院项目(KY2017HX03Y)

摘　　要：石墨烯是目前国内外新材料研究的热点。利用未修饰和已修饰的氧化石墨(OC),通过强碱还原的方法制备两种类型的石墨烯,并采用拉曼光谱、紫外光谱、伏安循环法(CV)、X线衍射谱(XRD)对上述两种制备方法获得的石墨烯进行性能表征,结果表明以氢氧化钠为还原剂还原氧化石墨和还原酵母-β-葡聚糖的修饰氧化石墨得到的石墨烯及衍生产品性能优异,特别是利用酵母-β-葡聚糖修饰后的氧化石墨,经强碱还原氧化得到的石墨烯产品能够有效克服石墨烯边缘残留—OH、—COOH等带有负电荷的含氧基缺点,同时具有在室温下能较好地分散在水溶液中,可稳定保存数月之久而不会发生积聚的优点。为实验室制备石墨烯产品提供有益尝试。Graphene is currently a research hot spot in domestic and overseas new materials.In this paper,two kinds of graphene are prepared by alkali reduction of unmodified and modified graphite oxide(OC).Raman spectroscopy,ultraviolet spectroscopy,voltammetric cycling(CV)and X-ray diffraction spectroscopy(XRD)are used to characterize the properties.The results show that the excellent performance of graphene and derivative products obtained by reducing graphite oxide and reducing yeast-β-glucan modified graphite oxide with sodium hydroxide as reducing agent.In particular,graphene products obtained by reducing and oxidizing graphite oxide modified by yeast-β-glucan by alkali reduction oxidation can overcome the negative edge residues of graphene such as-OH and-COOH,being well dispersed in aqueous solution at room temperature,and can be kept steadily for several months without accumulation.It provides a useful attempt for preparing graphene products in laboratory.

关 键 词：石墨烯 氧化石墨 拉曼光谱 还原 

分 类 号：O646[理学—物理化学]