1. State Key Laboratory of Solidification Processing
2. Center for Nano Energy Materials
3. School of Materials Science and Engineering
4. Northwestern Polytechnical University
5. Shaanxi Joint Laboratory of Graphene (NPU)
6. State Key Laboratory of Photocatalysis on Energy and Environment
7. College of Chemistry
8. Fuzhou University
9. Fuzhou 350116
10. P. R. China
11. Department of Chemistry
12. Faculty of Science
13. National University of Singapore
14. Singapore 117543
15. Singapore