1. Faculty for Science and Natural Resources; Universiti Malaysia Sabah, Jalan UMS; 88400 Kota Kinabalu, Sabah Malaysia
2. Centre for Advanced Materials and Renewable Resources; Faculty of Science and Technology; Universiti Kebangsaan Malaysia; 43600 Bangi, Selangor Malaysia
3. Bernal Institute; University of Limerick, Castletroy, Limerick; Ireland