1. Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
2. Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei106, Taiwan
3. Department of materials science and engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
4. R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 320, Taiwan
5. Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li, Taoyuan 320, Taiwan