文献类型：期刊文献

英文题名：Controlling and Formation Mechanism of Oxygen-Containing Groups on Graphite Oxide

作者：Liu, Zhiting[1];Duan, Xuezhi[1];Zhou, Xinggui[1];Qian, Gang[1];Zhou, Jinghong[1];Yuan, Weikang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：53

期号：1

起止页码：253

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20140317214676);WOS:【SCI-EXPANDED(收录号:WOS:000329586100030)】；

基金：This work is financially supported by the Natural Science Foundation of China (21106047 and 21306046), the Fundamental Research Funds for the Central Universities (WA1214020), the Major State Basic Research Development Program of China (2014CB239702), and the China Post-doctoral Science Foundation (2012M520041 and 2013T60428).

语种：英文

外文关键词：Nuclear magnetic resonance spectroscopy - Fourier transform infrared spectroscopy - Graphene oxide - Graphite - Magic angle spinning - X ray diffraction - Surface properties - X ray photoelectron spectroscopy

摘要：Controllable synthesis of graphite oxide (GO) for targeted surface properties is of great importance for its versatile applications. For this purpose, GO samples were prepared with different amounts of oxidant and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, C-13 cross-polarization with total sideband suppression magic-angle-spinning nuclear magnetic resonance, X-ray photoelectron spectroscopy, Raman spectroscopy, and zeta-potential measurement. When the oxidant amount is below a critical value, the epoxy groups are dominant on the GO surfaces, together with a few hydroxyl and carbonyl groups. Further increase in the oxidant amount leads to the formation and development of the carboxyl groups, which eventually reach a saturation level. Meanwhile, the increasing oxygen-containing groups introduce more defects and reduce the crystalline graphene domains on GO. A possible mechanism for the formation of the oxygen-containing groups on GO is proposed, providing a guideline for the manipulation of the GO surface properties.