1. Nanotechnology and Catalysis Research Centre (NANOCAT), IPS BuildingUniversity of MalayaKuala LumpurMalaysia
2. Department of Chemical EngineeringNational Taipei University of TechnologyTaipei CityTaiwan
3. School of Chemical Sciences and Food TechnologyFaculty of Science and TechnologyNational University of Malaysia, UKM43600BangiSelangor Darul EhsanMalaysia
4. School of ScienceMonash University Malaysia CampusSchool of ScienceBandar Sunway46150Petaling JayaMalaysia