1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
2. Engineering Research Center of Nano-Geomaterials of Ministry of Education, Laboratory of Advanced Mineral Materials, and Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
3. College of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China