1. Experimental and Theoretical Research Laboratory Department of Chemistry Kulliyyah of Science, International Islamic University Malaysia Kuantan Malaysia
2. School of Chemical Sciences and Food Technology Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Malaysia
3. Faculty of Chemical & Natural Resources Engineering Universiti Malaysia Pahang Kuantan Malaysia
4. Department of Chemistry, Faculty of Science University Malaysia Terengganu Kuala Terengganu Malaysia