1. Department of Chemistry, V. H. N. Senthikumara Nadar College (Autonomous), Virudhunagar-626 001, Tamil Nadu, India
2. Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida, 1709, Johannesburg, South Africa
3. Department of Physics, College of Science, King Faisal University, P. O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia
4. Department of Chemistry, PSG College of Technology, Coimbatore – 641 004, India