1. College of Chemical Engineering, Fuzhou University, Fuzhou, 350000 P. R. China
2. School of Resources & Chemical Engineering, Sanming University, Sanming, 365004 P. R. China
3. CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian Province, P. R. China
4. Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Sciences, Xiamen 361021, P. R. China