1. Ionic Liquids Research Laboratory Department of Chemistry Sardar Vallabhbhai National Institute of Technology Surat 395007 Gujarat India
2. Solid State Physics Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
3. Department of Chemistry College of Science Imam Abdul Rahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia
4. Basic & Applied Scientific Research Center (BASRC) Water Treatment Unit Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia