1. College of Chemistry
2. Chemical and Environmental Engineering
3. Henan University of Technology
4. Henan 450001
5. P. R. China
6. College of Chemistry and Molecular Engineering
7. Zhengzhou University
8. Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction
9. The Hong Kong University of Science & Technology
10. Kowloon
11. China