文献类型：期刊文献

英文题名：Eco-friendly one-pot synthesis of highly dispersible functionalized graphene nanosheets with free amino groups

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

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

年份：2013

卷号：24

期号：4

外文期刊名：NANOTECHNOLOGY

收录：;EI(收录号：20130315908848);WOS:【SCI-EXPANDED(收录号:WOS:000313367000021)】；

语种：英文

外文关键词：Thermogravimetric analysis - Dehydration - Hydrothermal synthesis - Silicon compounds - X ray photoelectron spectroscopy - Fourier transform infrared spectroscopy - Ethylene - Graphene oxide - High resolution transmission electron microscopy - Atomic force microscopy - Environmental protection - X ray diffraction analysis

摘要：An eco-friendly, facile and scalable hydrothermal approach, in which the reduction and functionalization of graphite oxide (GO) are completed in one pot, is proposed for the synthesis of monolayer 3-aminopropyltriethoxysilane (APTES)-functionalized graphenes (A-FGs). Atomic force microscopy, transmission electron microscopy and x-ray diffraction analyses indicate that the as-synthesized A-FGs consist of only one or a few layered graphenes, while x-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis reveal that APTES is bonded to graphene by the dehydration reaction between the Si-OH (produced by APTES hydration) and the -OH on the GO surface. As a result, free amino groups are left on the A-FGs. Moreover, A-FGs are highly dispersible in dimethylsulfoxide, APTES and ethylene glycol, and their solubilities are up to 0.89, 4.03 and 0.90 mg ml(-1), respectively. Online supplementary data available from stacks.iop.org/Nano/24/045609/mmedia