1. National Centre for Catalysis Research, Indian Institute of Technology Madras, Chennai 600 036, India
2. Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepcion, Concepcion 4070409, Chile
3. Technological Development Unit, University of Concepcion, Coronel Industrial Park, Coronel 4191996, Chile
4. Department of Physical Chemistry, Aksum University, Axum 1010, Ethiopia
5. Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India