1. Center for Hydrogen Energy, Institute of Future Energy, Univeristi Teknologi Malaysia, Kuala Lumpur, Malaysia
2. Department of Environment and Green Technologies, Malaysia Japan International Institute of Technology, Univeristi Teknologi Malaysia, Kuala Lumpur, Malaysia
3. Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Nishi-ku, Fukuoka, Japan
4. International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Nishi-ku, Fukuoka, Japan