1. School of Chemical Sciences, Universiti Sains Malaysia , Gelugor , 11800 Penang , Malaysia
2. Federal College of Education Technical , PMB 060 , Gombe , Gombe State , Nigeria
3. Nanomaterials Research Group, School of Chemical Sciences, Universiti Sains Malaysia , 11800 Gelugor , Penang , Malaysia
4. School of Materials and Minerals Resources Engineering, Engineering Campus, Universiti Sains Malaysia , 14300 Nibong Tebal , Pulau Pinang , Malaysia
5. Department of Fundamental & Applied Sciences, Universiti Teknologi PETRONAS , 32610 Seri Iskandar , Perak , Malaysia
6. Institute of Contaminant Management, Universiti Teknologi PETRONAS , 32610 Seri Iskandar , Perak Darul Ridzuan , Malaysia
7. Faculty of Chemical Engineering & Technology, University Malaysia Perlis (UniMAP) , 02600 , Arau , Perlis , Malaysia
8. Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis 02600 , Arau , Perlis , Malaysia