直链烷基修饰的疏水氧化石墨烯的制备与表征  

Synthesis and characterizations of linear alkyl modified hydrophobic graphene oxide

作　　者：姜云 林润 张弢[1] 

机构地区：[1]南京大学现代工程与应用科学学院,南京210093 [2]中山大学中山大学附属第一医院,广州510080

出　　处：《功能材料》2017年第10期10013-10016,10023,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(81671792)

摘　　要：利用十二烷基异氰酸酯上异氰酸酯基的高反应活性与氧化石墨烯(GO)上的羟基、羧基进行反应,在氧化石墨烯边缘接枝疏水性的高分子长链制备了直链烷基修饰的疏水氧化石墨烯(C12-GO)。通过傅里叶变换红外光谱(FT-IR)、X射线光电子能谱分析(XPS)、X射线衍射分析(XRD)、透射电子显微镜(TEM)以及原子力显微镜(AFM)对已修饰材料的结构和形貌进行了表征,结果表明,长链烷基成功接枝到GO上。与GO相比,经长链烷基修饰的氧化石墨烯呈现出明显的疏水性。Graphene oxide （GO） have attracted substantial attentions in various area owing to its unique structure and extraordinary properties. In this study, a hydrophobic GO derivative was prepared by simply reacting GO with linear dodecyl isocyanate. In order to verify the structure of modified GO, multiple characterization methods including Fourier transform infrared spectra （FT-IR）, X-ray photoelectron spectroscopy （XPS）, X-ray diffraction （XRD）, transmission electron microscope （TEM） and atomic force microscope （AFM） were performed and the results suggested that the linear alky chains have successfully grafted onto the GO layers where the hydroxyl and carboxyl of GO were distributed. Compared with pristine GO, the modified hydrophobic GO were confirmed a remarkably hydrophobicity.

关 键 词：氧化石墨烯 异氰酸酯 长链烷基 接枝 疏水性 

分 类 号：O613.71[理学—无机化学]