1. School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
2. Daxin Manganese Mining Branch of South Manganese Group Limited, Chongzuo, Guangxi 532315, China
3. South Manganese Group Limited, Nanning, Guangxi 530022, China
4. School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China