1. Department of Studies and Research in Environmental Science, Tumkur University, Tumkur 572103, Karnataka, India
2. Centre for Nano and Material Sciences, Jain University, Bangalore 562112, Karnataka, India
3. Department of Chemsitry, BMS Institute of Technology, Avalahalli, Bangalore 562164, Karnataka, India
4. Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572103, Karnataka, India
5. Prof. CNR Rao Center for Advanced Materials, Tumkur University, Tumkur 572103, Karnataka, India