1. Department of Chemistry, SRM University AP, Neerukonda, Mangalagiri, Guntur 522240, Andhra Pradesh, India
2. Center for Nanofiber and Nanotechnology, Mechanical Engineering Department, National University of Singapore, Singapore 117576, Singapore
3. Department of Physics, SRM University AP, Neerukonda, Mangalagiri, Guntur 522240, Andhra Pradesh, India
4. National Water and Energy Center, United Arab Emirates University, Al Ain 15551, UAE