1. Department of Chemistry and Bioengineering Hunan University of Science and Engineering Yongzhou 425100 China
2. Changsha Research Institute of Mining and Metallurgy Co., Ltd Changsha 410012 China
3. School of Materials Science and Engineering Hunan Institute of Technology Hengyang 421002 China
4. College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China