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利用改进的Hummer法制备氧化石墨,然后分别采用化学还原法和热还原法将氧化石墨还原制得功能化石墨烯。采用X-射线衍射(XRD)、扫描电镜(SEM)、傅立叶红外(FT-IR)和热重(TG)等表征手段对功能化石墨烯制备过程中的原料石墨、氧化石墨和石墨烯进行了表征。结果表明,化学还原法和热还原法都能还原氧化石墨制得功能化石墨烯,但还原程度不同。与化学还原法相比,热还原法制备的功能化石墨烯含有较少含氧基团,且工艺简单,耗时少,是一种高效制备大量功能化石墨烯的方法。
The modified Hummer method was used to prepare graphite oxide, and then the graphite oxide was reduced by chemical reduction and thermal reduction respectively to obtain functionalized graphene. The raw graphite, graphite oxide and graphene were prepared by XRD, SEM, FT-IR and TG. Characterization. The results show that both chemical reduction and thermal reduction methods can restore graphite oxide to obtain functionalized graphene, but the degree of reduction is different. Compared with the chemical reduction method, the functionalized graphene prepared by thermal reduction method contains less oxygen-containing groups, and the process is simple, less time consuming, is a method for efficiently preparing a large number of functionalized graphene.