Dr. Tawfik Abdo Saleh is a faculty member in the Chemistry Department at King Fahd University of Petroleum and Minerals. He has published several papers in international refereed journals and conference proceedings, has authored and edited several books and book chapters, and he is a member of several local and international scientific societies. He has supervised many graduate students. His expertise includes, but is not limited to, the synthesis, design, and preparation of materials, nanomaterials, nanocomposites, and hybrid materials and their applications. His expertise also includes materials characterization using various techniques. Dr. Vinod Kumar Gupta is Professor of Chemistry at Indian Institute of Technology Roorkee, Roorkee, India, and is currently working as SARCHI Chair Professor in the Applied Chemistry Department at the University of Johannesburg, Johannesburg, South Africa.

He has published more than 500 papers with 37,000 citations and an h-index of 127. He is editor of many journals and is on the editorial board of more than 20 international journals. He has more than 30 years of research experience in environmental engineering, electro-analytical chemistry, chemical sensors, and waste management.