1. State Key Laboratory of Applied Organic Chemistry
2. Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
3. and College of Chemistry and Chemical Engineering
4. Lanzhou University
5. Lanzhou 730000
6. Henan Key Laboratory of Polyoxometalate Chemistry
7. College of Chemistry and Chemical Engineering
8. Henan University
9. Kaifeng
10. P. R. China
11. Department of Biomedical Engineering
12. Emory University and Georgia Institute of Technology
13. Atlanta
14. USA