1. State Key Laboratory of Hollow-fiber Membrane Materials and Membrane Processes
2. School of Environmental and Chemical Engineering
3. Tianjin Polytechnic University
4. Tianjin 300387
5. P.R. China
6. Key Laboratory of Advanced Ceramics and Machining Technology
7. Ministry of Education
8. School of Materials Science and Engineering
9. Tianjin University
10. Tianjin 300072