Room-temperature synthesis of water-dispersible sulfur-doped reduced graphene oxide without stabilizers
Jianqiang Guo, Weimiao Wang, Yue Li, Jiafeng Liang, Qiaosi Zhu, Jiongli Li, Xudong Wang
Abstract
O) at room temperature. The sulfur doping is confirmed by high resolution S 2p XPS spectrum and element mapping. The colloidal dispersion state of S-rGO is confirmed by the investigation of Tyndall effect, the zeta potential and particle size distribution measurement. Compared with previously reported strategies, NaSH can initiate the reduction and sulfur doping at room temperature, demand no heat treatment, require no equipment and form stable aqueous S-rGO dispersion without using any stabilizer. These advantages will facilitate large-scale production of water-dispersible (sulfur doped) graphene and further boost their applications in sensors, catalysts and energy storage devices.