1. Institute of Engineering, Department of Applied Sciences, Tribhuvan University, Pashchimanchal Campus, Pokhara33700, Nepal
2. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore560012, India
3. Central Department of Biotechnology, Tribhuvan University, Kathmandu44600, Nepal
4. Central Department of Chemistry, Tribhuvan University, Kathmandu44600, Nepal