Dr. Mahmoud Nasrollahzadeh received his B.Sc. (2003) in Applied Chemistry and M.Sc. (2007) in Organic Chemistry, before receiving his Ph.D. degree in Organic Chemistry from Bu-Ali Sina University, Iran, in 2012. He then moved to the Chemistry Department at the University of Qom as an Assistant Professor, and soon after was promoted to Associate Professor. His research interests are in the field of organic & organometallic chemistry, polymer-supported metal complexes, chemical biology, phytochemistry, nanobiotechnology, and application of biowastes in the preparation of nano(bio)materials. In 2016, he chaired a national conference and helped create the Center of Environmental Research, a National Centre of Excellence for the regional problems of dusts. Dr. Nasrollahzadeh is a member of the editorial board of several international journals and has published over 260 scientific papers, 46 reviews, 3 book chapters, 2 Elsevier books and 1 patent, as well as editing another book. S. Mohammad Sajadi is professor of phytochemistry at Cihan university and Soran university. He studied pure and applied chemistry at Kurdistan University in 2005. In 2006 he continued his MSc in phytochemistry under the guidance of Prof. Robert Verpoorte from Leiden University. In 2009, he joined to Soran University as faculty member and then PhD researcher to continue his researches in the fields of phytochemistry and nanobiotechnology. In 2018 he joined to Cihan university as faculty member and senior researcher. Up to now Dr. Sajadi has achieved many national and international awards following a lot of numbers of his publications in high impact peer reviewed journals. He is also acting as Kurdistan National Research Conceal (KNRC) member. Up to now, he published three books in the field of nanotechnology which his most recent book entitled ?An introduction to green nanotechnology? was recently published by Elsevier.