Prof. Myong Yong Choi is currently a Professor in the Department of Chemistry and the Director of the Core Facility Center for Photochemistry & Nanomaterials at Gyeongsang National University, South Korea. He served as a Visiting Professor, the University of North Carolina at Chapel Hill in 2013-2014. He received his M.S. and Ph.D. in Chemistry from the University of Idaho and the University of North Carolina at Chapel Hill, USA. He worked as a post-doctoral fellow at the Department of Chemistry, University of Southern California, USA. His current research interests are in photocatalysis, photochemistry, nanomaterials using pulsed lasers, gas-phase laser spectroscopy, and quantum chemical calculations. He has published more than 150 peer-reviewed research papers in national and international journals. Professional involvement of Prof. Choi is as Editorial Board in Photochem, Bioengineered and Journal of Spectroscopy, Associate Editor in the Bulletin of the Korean Chemical Society, IET Nanobiotechnology, Science of Advanced Materials, and Guest Editor in Chemosphere, Environmental Pollution, and Environmental Research, Elsevier Publisher in 2020-2021. He has received several awards such as The Gaechuck Award for Excellence in teaching from Gyeongsang National University in 2016, Young Physical Chemist Award from Korean Chemical society in 2015, and Top 50 Environmental Technology Award from the Ministry of Environment, South Korea in 2014. Dr. Theerthagiri Jayaraman is a Brain Pool Fellow in the Department of Chemistry, Gyeongsang National University, South Korea, since August 2019. He worked as a Scientist-C/Assistant Professor in the Centre of Excellence for Energy Research, Centre for Nanoscience and Nanotechnology Sathyabama Institute of Science and Technology, Chennai, India, from May-2017 to July-2019. He received his B.Sc Degree in Chemistry from Sacred Heart College in 2009 and M.Sc Degree in Chemistry from Ramakrishna Mission Vivekananda College in 2011. He completed his Ph.D. Degree in the Department of Chemistry, Thiruvalluvar University in March 2017. His current research focuses on developing electrocatalysts for energy applications, Pt-free counter electrode materials for dye-sensitized solar cells, polymer electrolytes, and catalysis for energy and environmental remediations. He has published more than 120 research articles in peer-reviewed journals and 9 book chapters. Dr. M. L. Aruna Kumari is an Assistant Professor at the Department of Chemistry, Oxford College of Science, India. She obtained her bachelor’s degree in chemistry from Tumkur University in 2009 and master’s degree in Organic Chemistry from Kuvempu University in 2011. She received her Doctoral degree from Bangalore University in 2017. Her current research focuses on photocatalytic organic transformations, synthesis of metal oxides and its organic/inorganic hybrids for energy and environmental application and developing Advanced Oxidation Processes (AOP’s) for the removal of antibacterial and antimicrobial resistant organism from water. She published several research articles and book chapters of scientific repute. Professor Sivakumar Manickam is a Chemical Engineer with a specialization in the process engineering of nanomaterials, especially nanopharmaceuticals, and has over 25 years of experience in this field. He is currently working with the University of Technology Brunei (UTB), Brunei; before that, he worked at the University of Nottingham, International Campus in Malaysia. A major focus of his research is the development of cavitation-based reactors for the production of nanomaterials of technological importance, greener extraction of natural products, water treatment, development of pharmaceutical nanoemulsions, and use of novel carbon nanomaterials to develop biosensors for earlier diagnosis of cancer and diabetes. While at the University of Nottingham, he served in a variety of leadership roles, including Director of Research, Founding Director for the Centre for Nanotechnology and Advanced Materials, Head - Manufacturing and Industrial Research Division and Associate Dean for Research and Knowledge Exchange. He serves as Deputy Dean (Research) of the Faculty of Engineering at UTB. Over the course of his career, he has completed more than 20 industrial and government-funded projects and supervised more than 50 students in research projects. Throughout his career, he has published more than 250 peer-reviewed papers in journals and conferences. According to Scholar Google, he has a h-index of 59. In addition, he is also the Executive Editor of the Ultrasonics Sonochemistry Journal. His affiliations include service on the board of the Asia Oceania Sonochemical Society as well as the Fellow of the Higher Education Academy (UK) and the Fellow of the Royal Society of Chemistry (FRSC). Dr. Ahreum Min is a research professor in the Core-Facility Center for Photochemistry & Nanomaterials, Gyeongsang National University, South Korea. She received her MSc and Ph.D. degrees in Physical Chemistry from Gyeongsang National University in 2011 and 2016, respectively. She worked as a post-doctoral researcher at the department of chemistry, Chungbuk National University, South Korea, and at the University of Hawaii, USA. Her research interests are mainly focused on the photochemistry and development of multi-spectroscopic analysis methods in the gas phase and condensed phase.