1Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
2Nanotechnology & Catalysis Research Centre, Institute of Postgraduate Studies, University Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
4Department of Chemical Engineering, National Cheng Kung University, No.1 University Road, Tainan 70101, Taiwan
5School of Science, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia