1. Key Laboratory for Advanced Materials and Institute of Fine Chemicals, National Engineering Laboratory for Industrial Wastewater Treatment, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
2. Department of Civil Engineering, The University of Hong Kong, Hong Kong, P. R. China
3. State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, P. R. China
4. School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, P. R. China