State Key Laboratory of High Performance Ceramics and Superfine Microstructure;
Shanghai Institute of Ceramics;
Chinese Academy of Sciences;
Shanghai 200050;
China;
Shanghai Xuhui District Dental Center;
Shanghai 200032;
China;
Center of Materials Science and Optoelectronics Engineering;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
Graphene oxide; Nitrogen-doping; Antibacterial activity; Electron transfer; Reactive oxygen species;