1. School of Chemistry Institute of Science Suranaree University of Technology Muang District Nakhon Ratchasima 30000 Thailand
2. Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
3. National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency Klong Luang Pathum Thani 12120 Thailand
4. Research Network of NANOTEC-VISTEC on Nanotechnology for Energy Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand