Prof. Dennis Y.C. Leung received his BEng (1982) and PhD (1988) from the Department of Mechanical Engineering at the University of Hong Kong. Professor Leung joined HKU Mechanical Engineering Department in 1993 as a lecturer and became a full professor in 2007. He is currently the head of the department specializing in environmental pollution control and renewable & clean energy. He has published more than 460 articles in this area including 300+ peer reviewed top SCI journal papers. His current h-index is 73 and total citations are 30000+. He is one of the top 1% highly cited scientists in the world in energy field since 2010 (Essential Science Indicators) and named as a Highly Cited Researcher by Clarivate Analytics from 2017 to 2020. Prof. Leung has delivered more than 70 keynote and invited lectures in many conferences

AMRANE Abdeltif (55 years old) Professor-Exceptional class, UMR CNRS 6226 ISCR, University of Rennes 1. (Google Scholar: h-index: 46; citations: 8135 // Scopus: h-index: 37; citations: 5576). 1998: Thesis Director Enabling Degree (Univ. Rennes 1) / 1991: PhD in Chemistry (Univ. Rennes 1) / 1988: Master (DEA) in Chemistry (Univ. Rennes 1) / 1987: Chemical Engineering Degree (USTHB-Algeria). Since approximately 15 years his research is entirely devoted to the development of combined processes for the removal of organic pollutants in effluent wastewater and gaseous emissions within the CIP team. He has managed 12 PhD theses as thesis director and 3 are in progress; he has also comanaged 17 PhD theses and 6 co-management theses are in progress. He has been involved as a manager or a participant in several national and international projects, as well in international collaborations (Algeria, Belgium, Hungary, Iran, Lebanon, Mexico, Morocco, Poland, Portugal, Romania, Spain, Tunisia). He has published more than 350 international papers including 15 papers in press. He is the co-Editor of two books (Elsevier). He has also published 12 chapter books and has about 130 international and 20 national oral communications.

Dr. Eugene Mananga is a Doctoral Faculty in Physics & Chemistry Programs at the Graduate Center of the City University of New York (CUNY), where he is the recipient of the 2017 Henry Wasser Award in Physics, and the Program Director of STEM-Grants for the CUNY Academy for Humanities and Sciences. He is an Assistant Professor of Physics and Nuclear Medicine at Bronx Community College and an Adjunct Professor of Applied Physics at New York University. Eugene is the recipient of the 2018 Distinguished Scientist Award from the American Chemical Society (New York & Westchester Section) for Contributions and Advanced Studies in the Theory of Spin Dynamics in Solid-State Nuclear magnetic Resonance and Quantum Mechanics. During the years 2020 and 2019, he was selected to participate in the US Department of Energy Visiting Faculty Program at Lawrence Berkeley National Laboratory (2020) and Argonne National Laboratory (2019) to work on problems related to the energy storage and technology. Part of his current research interest is in the field of electrochemical energy storage with the focus on the characterization of the electrode materials for rechargeable batteries. Eugene completed his Ph. D in Physics (with Distinguished Professor Steven Greenbaum) from the City University of New York and holds 6 additional graduate degrees and training from various institutions including Harvard University, Massachusetts Institute of Technology, Massachusetts General Hospital (MGH), and City College of New York. Eugene did his postdoctoral studies in the National High Magnetic Field Laboratory of USA, Harvard Medical School and MGH. Prior to joining Harvard-MGH, Eugene was a research engineer in the French Alternative Energies and Atomic Energy Commission (CEA-SACLAY, NEUROSPIN). Research Interest: Professor Eugene Mananga research interests are in Condensed Matter Physics, Atomic and Molecular Physics, Solid-State Nuclear Magnetic Resonance, Medical Physics, Radiological Sciences and Nuclear Medicine. Currently, he is focused on advancing theory, simulation and methodology in Solid-State Nuclear Magnetic Resonance, Spin Dynamics, Quantum Physics, Imaging Science, Medical Physics and Nuclear Medicine.

Zhuohua Sun received his Ph.D. at the University of Groningen with Prof. Katalin Bartaand Prof. Ben L Feringa in 2018.After working as postdoctoral researcher with Prof. AvelinoCorma at Polytechnic University of Valencia. He joined Beijing Advanced Innovation Center for Tree Breeding by Molecular Design at Beijing Forestry University as a Professor. His research interests lie in the development of novel heterogeneous catalysts for catalytic conversion of lignocelluloses biomass.

Dr.Osman Adiguzel graduated from Department of Physics, Ankara University, Turkey in 1974 and received PhD- degree from Dicle University, Diyarbakir-Turkey. He studied at Surrey University, Guildford, UK, as a post doctoral research scientist in 1986-1987, and his studies focused on shape memory alloys. He worked as research assistant, 1975-80, at Dicle University and shifted to Firat University in 1980. He became professor in 1996, and he has been retired due to the age limit of 67; following academic life of 45 years. He published over 60 papers in international and national journals; He joined over 100 conferences and symposia in international and national level as participant, invited speaker or keynote speaker with contributions. He served the program chair or conference chair/co-chair in some of these activities. In particular, he joined in last six years (2014 - 2019) over 60 conferences as Speaker, Keynote Speaker and Conference Co-Chair organized by South Asian Institute of Science and Engineering (SAISE), web: http://saise.org/, Science and Engineering Institute (SCIEI), web: http://www.sciei.org, International Association of Computer Science and Information Technology, web: http://www.iacsit.org/, Scientific Federation, web: https://scientificfederation.com/, IASED, web: http://www.iased.org/ , The Academic World Education and Research Center (AWER-Center), web: http://www.awer-center.org/, and other institutes and companies. Additionally, he retired at the end of November 2019, and contributed with Keynote/Plenary Speeches to 10 Virtual/Webinar Conferences in the first year of his retirement, 2020. Dr. Adiguzel served his directorate of Graduate School of Natural and Applied Sciences, Firat University in 1999-2004. He supervised 5 PhD- theses and 3 M.Sc theses. He is also Technical committee member of many conferences. He received a certificate which is being awarded to him and his experimental group in recognition of significant contribution of 2 patterns to the Powder Diffraction File Release 2000. The ICDD (International Centre for Diffraction Data) also appreciates cooperation of his group and interest in Powder Diffraction File. Scientific fields of Dr. Adiguzel are as follow: Shape memory effect and displacive phase transformations in shape memory alloys and other alloys, molecular dynamics simulations, alloy modeling, electron microscopy, electron diffraction, x-ray diffraction and crystallography.

Professor of the ALMA MATER STUDIORUM-University of Bologna (I) and Associated Researcher to ISTEC-CNR of Faenza RA (I). Awards: 1993 Federation of Chemical Industries; 1996 Catalysis Group; 2004 Professor HC of the Universitad del Litoral (Arg); 2010 Gold medal "P. Pino" of the Italian Chemical Society; 2018 Silver Plate "G. Fausez" of the Catalysis Group. He is author of 295 papers, 273 Congress Communications and 21 Patents (17 EU or WO), with a h-index = 46 (Scopus). Active in the R&D of new catalytic processes of economic and environmental relevance, he has been Task and/ or Team Leader of 7 EU Projects, Coordinator of 2 National Projects, and Team and/or Task Leader of many National and International Projects. Member of the Editorial Board of Applied Clay Science and Guest-Editor of 4 Special Issues of Applied Clay Science, 4 of Catalysis Today and the book "Natural Conversion V", Studies in Surface Science and Catalysis, Vol. 119.

Professor Virinder Parmar, born on 2nd November 1948 at Allahabad (India) is a Naturalized US Citizen. He did B.Sc. Honors, M.Sc. and Ph.D. from the University of Delhi (India), and has worked for nearly 10 years as a Postdoctoral/Visiting Scientist at Cornell University, Harvard University, University of Massachusetts Lowell (UML), NYU-Poly and MIT (USA); the University of Basel (Switzerland) and the Imperial College of Science, Technology and Medicine (London, UK). He is currently a Faculty member in the Department of Chemistry and Environmental Science at Medgar Evers College, The City University of New York (Brooklyn, New York, USA). He has been a Faculty at St. Stephen's College and the University of Delhi (India) for 44 years, he recently retired as Full Professor of Chemistry and has served as Head of the Department of Chemistry and as Chairman of the Board of Research Studies, and Provost of Gwyer Hall at this University.

Dr. Omid Akbarzadeh Pivehzhani is working with Nanotechnology and Catalysis Research Centre since 2016. His main research area is heterogeneous catalysis and catalytic reaction engineering. He has spent 10 years in academic-industrial projects as a research officer and post-doctoral. Dr. Omid has worked 5 years in the oil and gas industry as a chemical engineer. He developed advanced smart catalysts, especially for the oil and gas industries. Dr. Omid has contributed to two PETRONAS Research Sdn Bhd industrial catalyst projects and worked on an international Airbus R&D project in NANOCAT. Currently, he is the PI of the graphene catalyst project at Hokkaido University in Japan, project member of FRGS grant in UTP and assigned to the NANOCAT center project. Dr. Omid was the Chairman, keynote speaker and organizing committee of many international conferences. He is currently the supervisor of three Ph.D. students from different countries. He has published many ISI papers; book chapters and has two approved and granted patents. Also, he has hands-on experience and passed several pieces of training on handling different types of equipment which are being widely used for material synthesis, characterization and performance evaluation. He is in close collaboration with other departments, government agencies and universities around the world. He is visiting researcher of Jiangsu University China and Hokkaido University Japan. He is a member of the society of petroleum engineers (SPE) and Senior Member of Hong Kong Chemical, Biological & Environmental Engineering Society. Omid awarded a full fellowship from UTP during Ph.D. and were involved for lab demonstrator and teaching in the different courses of chemical engineering. He awarded Silver Medal in 27th International Invention & Innovation Exhibition (ITEX 2016), Kuala Lumpur Convention Center in Malaysia and Silver Medal of Post Graduate Research Project in the 35th Science & Engineering Design Exhibition (SEDEX 35).