1. Chongqing Key Laboratory of Environmental Materials and Remediation Technologies, College of Chemistry and Environmental Engineering Chongqing University of Arts and Sciences Chongqing 402160 P. R. China
2. Research Institute for New Materials Technology Chongqing University of Arts and Sciences Chongqing 402160 P. R. China
3. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China