1. Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600036, India
2. Department of Chemistry, Indian Institute of Technology Indore (IIT Indore), Indore 453552, India
3. International Centre for Clean Water, Second Floor, B-Block, IIT Madras Research Park, Kanagam Road, Taramani, Chennai 600113, India