1. College of Chemistry, Chongqing Normal University, Chongqing 401331, P.R. China
2. School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, P.R. China
3. Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia
4. Chemistry Department, Faculty of Sciences, University of Sfax, 1171, Sfax 3000, Tunisia