石墨烯
拉曼光谱
热液循环
氧化物
材料科学
氧化石墨
傅里叶变换红外光谱
化学工程
透射电子显微镜
吸收(声学)
吸收光谱法
纳米技术
复合材料
光学
物理
工程类
冶金
作者
Maoyong Zhi,Quanyi Liu,Hao Chen,Sihai Feng,Yuanhua He
出处
期刊:Journal of physics
[IOP Publishing]
日期:2019-06-01
卷期号:1213 (5): 052047-052047
标识
DOI:10.1088/1742-6596/1213/5/052047
摘要
Abstract This work reports an efficient and green reduction method of graphene oxide (GO) by a one-step hydrothermal process. GO was prepared by the oxidation of graphite using a modified Hummers method. The reduced graphene oxide (rGO) were characterised and studied by means of UV-vis absorption spectra, Raman spectroscopy and transmission electron microscope (TEM) techniques. UV-vis absorption spectra revealed that GO was successfully reduced to rGO and the π -conjugated structure was restored. Raman spectroscopy suggested that rGO had a smaller average size of the in-plane sp 2 domains and more sp 2 domains than that of GO. Fourier transform infrared (FTIR) spectra demonstrated that most oxygen functionalities on the GO were removed after the reduction. TEM images further confirmed that there was no irreversible agglomeration of rGO layers. Furthermore, we proposed a possible mechanism for the reduction of GO with subcritical water under hydrothermal condition. This study provides a novel idea for developing environmentally friendly reduction methods of GO.
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