1. Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
2. Department of Chemistry, Jadavpur University, Kolkata 700032, India
3. Department of Industrial Chemistry and Applied Chemistry, Swami Vivekananda Research Centre, Ramakrishna Mission Vidyamandira, Belurmath, Howrah 711202, India
4. Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, HBNI, 1/AF, Bidhannagar, Kolkata 700064, India