1. Colloid Chemistry Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan-713104, West Bengal, India
2. Department of Microbiology, The University of Burdwan, Burdwan-713104, West Bengal, India
3. Department of Chemistry, Kazi Nazrul University, Asansol-713303, West Bengal, India
4. Department of Physics, Indian Institute of Technology Patna, Bihar-801106, India