a
School of Chemistry and Environmental Science, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, P. R. China
E-mail: jwang@henannu.edu.cn
b
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
c
Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China