1. School of Computer Science and Technology, Southwest University of Science & Technology, Mianyang 621010, Sichuan, China
2. Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), P.O. Box
919-311, Mianyang 621999, Sichuan, China
3. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China