1. HSB 148, Unit of Nanoscience, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
2. International Centre for Clean Water, second Floor, B-Block, IIT Madras Research Park, Kanagam Road, Tharamani, Chennai, Tamil Nadu 600113, India
3. National Institute of Technology Calicut, Calicut Mukkam Road, Kattangal, Kerala 673601, India