1. Beijing Key Laboratory of Membrane Science & Technology
2. College of Chemical Engineering
3. Beijing University of Chemical Technology
4. Beijing 100029
5. P. R. China
6. Department of Chemical Engineering
7. Dawood University of Engineering and Technology
8. Karachi
9. Pakistan
10. Mehran University of Engineering and Technology
11. Jamshoro
12. Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education)
13. School of Materials Science and Engineering
14. Dalian University of Technology
15. Liaoning