Currently, I am a Professor in the Department of Chemistry and National Centre for Catalysis Research (NCCR), IIT-Madras; Adjunct Professor, New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai; Honorary Visiting Professor, School of Health and Science, University of Western Sydney, Australia. Earlier, I was a Faculty Member in the Department of Chemistry and Adjunct Faculty in Energy System and Engineering Centre at IIT-Bombay; Faculty in the Department of Materials Chemistry, Tohoku University, Sendai; Eminent International Visitor, University of Western Sydney, Australia. I have published over 300 research papers in peer reviewed journals and conference proceedings. My research interests include nanostructured materials and heterogeneous catalysis for green chemical routes, environmental remediation processes, and energy conversion (biomass, solar hydrogen) and storage (hydrogen, fuel cell, Lithium battery) methods. My teaching interests include Solid State Chemistry and Nanomaterials, Surface Chemistry and Catalysis, Experimental Methods of Analysis, Physical-Inorganic Chemistry.