%0 Journal Article
%T Preparation and Characterization of Water―soluble Graphene and Highly Conducting Films
%A CHEN Cao
%A ZHAI Wen-Tao
%A ZHENG Wen-Ge
%A LU Ding-Ding
%A WANG Jing
%A SHEN Bin
%A ZHANG Hao-Bin
%J 无机材料学报
%D 2011
%I Science Press
%R 10.3724/sp.j.1077.2011.00707
%X Graphene has no oxygen groups on its surface, resulting in a poor dispersion in water. The synthesis of graphene with high water solubility is popular nowadays. In this study, the oxygen content of graphite oxide was adjusted by a low―temperature and high―vacuum expansion process, the resultant graphene sheets exhibited the smallest thickness of about 1.7 nm and size of 1.0 um. The results indicated that prepared graphene could be stable in neutral aqueous solution without surfactant, and the solubility of the water―soluble graphene was 0.07 mg/mL. In addition, the electrical conductivity of the graphene film of around 1000 S/m was higher than many reported noncovalent graphene films.
%K graphene
%K film
%K electrical properties
%U http://www.jim.org.cn/fileup/PDF/20110707.pdf