1. Department of Chemistry University of Malaya Kuala Lumpur Malaysia
2. Department of Physics, Faculty of Sciences Selcuk University Konya Turkey
3. Department of Physics University of Malaya Kuala Lumpur Malaysia
4. Department of Energy Systems, Faculty of Engineering & Architecture Sinop University Sinop Turkey
5. Nanotechnology & Catalysis Research Centre (NanoCat) Institute of Postgraduate Studies Kuala Lumpur Malaysia