1. Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
2. Department of Chemistry, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh, Pakistan
3. Separation Science and Technology Group (SepSTec), Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
4. Universiti Malaya Centre for Ionic Liquids, Universiti Malaya, Kuala Lumpur, Malaysia