功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2012年
20期
2807-2811
,共5页
十六烷基三甲氧基硅烷%三乙胺%氧化石墨烯%石墨烯%功能化石墨烯
十六烷基三甲氧基硅烷%三乙胺%氧化石墨烯%石墨烯%功能化石墨烯
십륙완기삼갑양기규완%삼을알%양화석묵희%석묵희%공능화석묵희
hexadecyltrimethoxysilane%triethylamine%graphene oxide%graphene%functionalized graphene
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。
用十六烷基三甲氧基硅烷在三乙胺存在下處理氧化石墨烯(GO),一步製得長鏈烷基硅烷功能化石墨烯(FG)。運用傅裏葉變換紅外光譜(FT-IR)、X射線光電子能譜(XPS)、X射線衍射(XRD)、原子力顯微鏡(AFM)和紫外-可見吸收光譜(UV-Vis)等技術對FG的結構與性能進行瞭測試錶徵。分析結果錶明十六烷基三甲氧基硅烷中的Si-OCH3與Go錶麵上的OH反應,以SiOC連接在石墨烯片層的錶麵,而GO片層上其它含氧基糰大部分被還原脫除,恢複瞭石墨烯的sp^2雜化結構。FG具有很好的油溶性,可穩定分散于N,N-二甲基甲酰胺(DMF)、四氫呋喃、丙酮、苯等有機溶劑中,併且在DMF中的最大分散濃度為1.90rag/mL。AFM的結果顯示,FG在DMF中平均厚度約為1.7nm,以單層剝離狀態存在。
용십륙완기삼갑양기규완재삼을알존재하처리양화석묵희(GO),일보제득장련완기규완공능화석묵희(FG)。운용부리협변환홍외광보(FT-IR)、X사선광전자능보(XPS)、X사선연사(XRD)、원자력현미경(AFM)화자외-가견흡수광보(UV-Vis)등기술대FG적결구여성능진행료측시표정。분석결과표명십륙완기삼갑양기규완중적Si-OCH3여Go표면상적OH반응,이SiOC련접재석묵희편층적표면,이GO편층상기타함양기단대부분피환원탈제,회복료석묵희적sp^2잡화결구。FG구유흔호적유용성,가은정분산우N,N-이갑기갑선알(DMF)、사경부남、병동、분등유궤용제중,병차재DMF중적최대분산농도위1.90rag/mL。AFM적결과현시,FG재DMF중평균후도약위1.7nm,이단층박리상태존재。
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.