World is facing two burning problems of environmental pollution and scarcity of energy sources. Photocatalysis is an emerging area of research, which can assist us in providing solutions to both these problems. It is a part of Advanced Oxidation Processes. Here, a hydroxyl radical is acting as an active oxidizing species, which is the strongest oxidant next to fluorine. It is a benign method to oxidize the organic contaminants and also remove metals ions at very low level such as ppm. Efforts are being made to increase the photocatalytic activity by different methods such as sensitization, doping by metals and/or non-metals, composite formation, use of co-catalyst, introducing Z-scheme, etc. It is a green chemical approach to degrade even those organic pollutants, which are otherwise recalcitrant and cannot be degraded so easily by simple chemical methods. Not only this, it will solve the problem of energy shortage of conventional energy resources, which are going to exhaust in coming two or three decades from now. We have almost reached to an alarming situation. It can also solve the problem of global warming, responsible for unwanted draughts, floods, rising temperature of the atmosphere and sea levels, etc. All these will be discussed with developing scientific attitude in younger generation.

Prof. Suresh C. Ameta obtained his masters degree from university of Udaipur and was awarded gold medal-1970. He secured First position in M. Phil-1978 in Vikram University, Ujjain (M. P.). He also obtained Ph. D degree from this University in 1980. He has served as Professor & Head, Department of Chemistry, North Gujarat University, Patan (1994) and M. L. Sukhadia University, Udaipur (2002-2005) & Head, Department of Polymer Science (2005-2008). He also served as Dean, P.G. Studies for a period of four years (2004-2008).  He has served as  Dean, Faculty of Science, PAHER University, Udaipur for six years (2011-2017). Presently, he is working as Professor of Eminence (Distinguished Professor of Chemistry) in Pacific University, Udaipur.
Prof. Ameta has occupied the coveted position of President, Indian Chemical Society, Kotkata (2000-2001) and is now lifelong Advisor (2002-continue). He was awarded a number of prizes during his career like National prize twice for writing Chemistry books in Hindi (1976 & 1978), Scientist of the Year Award (2002), Prof. M. N. Desai Award (2004), Prof. G. V. Bakore Award (2007), prof. W. U. Malik Award (2008), national Teacher Award (2011), and above all, Life Time Achievement Awards by Indian Chemical Society, Kolkata (2011), Indian Council of Chemists, Agra (2015) and also by Association of Chemistry Teachers, Mumbai  (2018). He has successfully guided 110 students for Ph. D.  Dr. Ameta has more than  450 research papers and 36 books to his credit. He has contributed Chapters in Books published by Trans-Tech, Switzerland: Nova Science, Taylor & Francis, and Apple Academic Press, USA. Three books on Green Chemistry, Microwave Assisted Organic Synthesis and Chemical Applications of Symmetry and Group Theory have been published by Apple Academic Press, USA. Two more books on Solar Energy Conversion & Storage and Photocatalysis; An Emerging Technology have been recently released by Taylor & Francis, USA and a book on Waste Water Treatments by AOPs by Elsevier. He has completed 5 Major Research Projects by DST, UGC, CSIR, and Ministry of Energy, Govt. of India.  Prof. Ameta has delivered lectures and chaired sessions in National Conferences organized in almost every part of this country. He is also reviewer of number of international Journals. Prof. Ameta has an experience of more than  50 years of Teaching and Research. 
Indian Chemical Society, Kolkata has published a Special issue of Journal of Indian Chemical Society in December 2008 to felicitate him on his 60th birthday and has instituted aa Award in his name as Prof. Suresh C. Ameta Award to be given to a senior chemist of repute from 2003 onwards. Recently he has delivered Key Note Addresses in International Conferences at Tokyo, Japan in May 2022 and Hangzhou, China in July 2022. Above all, he has pointed out some problems in h-index and proposed a complimentary index as Ameta or A-index for further improving h-index and for this, he granted copyright for this improvement by Registrar, Copyrights, Govt. of India.