用十六烷基三甲氧基硅烷在三乙胺存在下处理氧化石墨烯（GO），一步制得长链烷基硅烷功能化石墨烯（FG）。运用傅里叶变换红外光谱（FT-IR）、X射线光电子能谱（XPS）、X射线衍射（XRD）、原子力显微镜（AFM）和紫外-可见吸收光谱（UV-Vis）等技术对FG的结构与性能进行了测试表征。分析结果表明十六烷基三甲氧基硅烷中的Si-OCH3与Go表面上的OH反应，以SiOC连接在石墨烯片层的表面，而GO片层上其它含氧基团大部分被还原脱除，恢复了石墨烯的sp^2杂化结构。FG具有很好的油溶性，可稳定分散于N，N-二甲基甲酰胺（DMF）、四氢呋喃、丙酮、苯等有机溶剂中，并且在DMF中的最大分散浓度为1．90rag／mL。AFM的结果显示，FG在DMF中平均厚度约为1．7nm，以单层剥离状态存在。
Functionalized graphene (FG) was prepared in one-step by treating graphene oxide (GO) with hexa-decyltrimethoxysilane and triethylamine. Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelec- tron spectroscopy (XPS), X-ray diffraction (XRD), atomic force microscopy (AFM) and ultraviolet-visible (UV-Vis) spectroscopy were performed to characterize the structure and properties of FG. Investigation results confirmed that the silane molecules were attached on the surface of GO by Si--O--C, meanwhile the residual oxygen-containing functional groups of GO were removed and the sp2-hybridized structure of graphene was re- stored. FG had an excellent lipophilicity and could be stably dispersed in various solvents such as N, N-dimeth- ylformamide (DMF), tetrahydrofurane, acetone and toluene. The maximum dispersibility of FG in DMF was 1.90mg/mL. AFM showed that FG was exfoliated into single sheets in DMF with a thickness of about 1.7nm.
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