石墨烯
剥脱关节
氧化物
氧化石墨烯纸
材料科学
氧化石墨
石墨
热重分析
化学工程
透射电子显微镜
纳米技术
傅里叶变换红外光谱
插层(化学)
拉曼光谱
纳米颗粒
无机化学
复合材料
化学
光学
冶金
工程类
物理
作者
Jianfeng Shen,Yizhe Hu,Min Shi,Xin Lü,Qin Chen,Chen Li,Mingxin Ye
摘要
In this study, we report an inexpensive, massively scalable, fast, and facile method for preparation of graphene oxide and reduced graphene oxide nanoplatelets. The basic strategy involved the preparation of graphite oxide (GO) from graphite through reaction with benzoyl peroxide (BPO), complete exfoliation of GO into graphene oxide sheets, followed by their in situ reduction to reduced graphene oxide nanoplatelets. The mechanism of graphene oxide producing is mainly the generation of oxygen-containing groups on graphene sheets. In addition, inserted BPO and expansion of CO2 evolved during reaction will expand the distance between graphite layers, which are also main factors for exfoliation. Thermogravimetric analysis, Raman spectroscopy, and Fourier transform infrared spectroscopy indicated the successful preparation of GO. X-ray diffraction proved the mechanism of intercalation and exfoliation of graphite. Transmission electron microscopy and atomic force microscopy were used to demonstrate the structure of produced graphene oxide and reduced graphene oxide nanoplatelets.
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