1. Department of Chemistry, Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan, Hunan Province 411105, China
2. Department of Biology and Chemistry, Hunan University of Science and Engineering, Yongzhou 425199, Hunan Province, P. R. China
3. College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150080, China