1. Key laboratory of Ningxia for Photovoltaic Materials, Ningxia University, Yin-Chuan 750021, China
2. College of Materials and Environmental Engineering, Hezhou University, No. 18 West Ring Road, Hezhou, Guangxi 542800, China
3. Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive, Utilization, Hezhou University, Hezhou 542800, China