1. Department of Physical Chemistry
2. School of Chemistry
3. Madurai Kamaraj University
4. Madurai-625-021
5. India
6. School of Chemical Engineering and Department of Energy Storage and Conversion Engineering
7. Chonbuk National University
8. Jeonju-561-756
9. Republic of Korea
10. Department of Chemical Engineering
11. Center of Research Excellence in Nanotechnology (CENT)
12. King Fahd University of Petroleum and Minerals Dhahran
13. Saudi Arabia
14. Low Dimensional Materials Research Centre (LDMRC)
15. Department of Physics
16. Faculty of Science
17. University of Malaya
18. 50603 Kuala Lumpur