1. College of Materials Science & Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
2. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
3. Center for Membrane and Water Science & Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
4. MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials, School of Resource, Environments and Materials, Guangxi University, Nanning 530004, P. R. China