1. Center for Catalysis, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of ScienceMahidol University Rama 6 Road Bangkok 10400 Thailand
2. Department of Materials Science and Engineering, School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology, Wangchan Rayong 21210 Thailand
3. Research Network of NANOTEC‐VISTEC on Nanotechnology for Energy, Vidyasirimedhi Institute of Science and Technology, Wangchan Rayong 21210 Thailand