1. College of Environment and Resources, Southwest University, Beibei, Chongqing, 400715, People's Republic of China
2. Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
3. School of Chemistry, University of St Andrews, Fife, KY16 9ST, Scotland, UK
4. National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing 400716, China