1. State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering and Ningxia Key Laboratory for Photovoltaic Materials, Ningxia University, Yin-Chuan 750021, P. R. China
2. Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran 14115-175, Iran
3. College of Materials and Environmental Engineering and Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou, Guangxi 542800, P. R. China
4. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
5. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210009, P. R. China