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