1. Key Laboratory of Inorganic Nanomaterials of Hebei Province
2. College of Chemistry and Material Science
3. Hebei Normal University
4. Shijiazhuang
5. P. R. China
6. Department of Materials Science & Engineering
7. University of Pennsylvania
8. Philadelphia
9. USA
10. Key Laboratory of Green Printing
11. Institute of Chemistry
12. Chinese Academy of Sciences
13. Beijing