1. Department of Physics; Harbin Institute of Technology; Harbin 150001 China
2. State Key Laboratory of Urban Water Resource and Environment, Institute of Theoretical and Simulational Chemistry, Academy of Fundamental and Interdisciplinary Sciences; Harbin Institute of Technology; Harbin 150001 China
3. Department of Applied Chemistry, College of Science; Nanjing Tech University; Nanjing 211816 People's Republic of China