1. State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
2. Faculty of Materials Science and Chemistry China University of Geosciences Wuhan Hubei 430074 P. R. China
3. Zhejiang Institute China University of Geosciences Hangzhou Zhejiang 311305 P. R. China
4. Shenzhen Institute China University of Geosciences Shenzhen Guangdong 518057 P. R. China
5. School of Applied Chemistry and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China