1. State Key Laboratory of Rare Earth Resource Utilization and Laboratory of Chemical BiologyChangchun Institute of Applied ChemistryChinese Academy of Science Changchun Jilin 130022 P. R. China
2. University of Science and Technology of China Hefei Anhui 230029 P. R. China
3. Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of Sciences Beijing 100049 China