1. Key Laboratory of Applied Surface and Colloid Chemistry
2. Ministry of Education
3. School of Chemistry and Chemical Engineering
4. Shaanxi Normal University
5. Xi’an 710119
6. Department of Chemistry
7. Humboldt-Universität zu Berlin
8. 12489 Berlin
9. Germany
10. Department of Chemistry and Nano Science
11. Ewha Womans University
12. Seoul 03760
13. Korea