1 Nano-Bio Laboratory, Special Center for Nanoscience, Jawaharlal Nehru University, New Delhi, India.
2 NanoBioTech Laboratory, Department of Environmental Engineering, Florida Polytechnic University, Lakeland, 33805, FL, USA; School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand, India.
3 School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, 710071, China.
4 Nano-Bio Laboratory, Special Center for Nanoscience, Jawaharlal Nehru University, New Delhi, India. Electronic address: [email protected].