1. Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, UP 208016, India
2. Department of Chemical Engineering, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan 342037, India
3. Material Science Programme, Indian Institute of Technology Kanpur, Kanpur, UP 208016, India
4. Thematic Unit of Excellence on Soft Nanofabrication, Indian Institute of Technology Kanpur, Kanpur, UP 208016, India
5. Centre for Environmental Science & Engineering, Indian Institute of Technology Kanpur, Kanpur, UP 208016, India