1. School of Chemistry & Materials Science
2. Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
3. Jiangsu Normal University
4. Xuzhou 221116
5. P. R. China
6. Jiangsu Key Laboratory for NSLSCS
7. School of Physical Science and Technology
8. Nanjing Normal University
9. Nanjing 210023
10. School of Safety
11. China University of Mining and Technology
12. Xuzhou 221008