1. School of Environment and Safety Engineering, Jiangsu University, Jiangsu, Zhenjiang 212013, P. R. China
2. School of Chemistry & Chemical Engineering, Jiangsu University, Jiangsu, Zhenjiang 212013, P. R. China
3. Zhenjiang Water Corporation, Jiangsu, Zhenjiang 212003, P. R. China
4. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Jilin, Changchun 130103, P. R. China
5. School of Science, Jiangsu University of Science and Technology, Jiangsu, Zhenjiang 212003, P. R. China