1. School of Chemistry and Chemical Engineering
2. Qingdao University
3. Qingdao 266071
4. P. R. China
5. State Key Laboratory of Rare Earth Resource Utilization
6. Changchun Institute of Applied Chemistry
7. Chinese Academy of Sciences
8. Changchun 130022
9. Materials Architecturing Research Center
10. Korea Institute of Science and Technology
11. Seongbuk-gu
12. Republic of Korea