Dr. Ahmad Alshammari received the B.Sc. degree in Chemistry from King Saud University, Riyadh, Saudi Arabia, in 2001, the M.Sc. degree in Designing Chemical Solutions from the University of Newcastle-upon-Tyne, Newcastle-upon-Tyne, U.K., in 2005, and then he studied chemistry at Leibniz Institute for Catalysis at the University of Rostock, where he completed his PhD thesis in the end of 2010 in the group of Prof. Axel Schulz and PD Dr. habil. Andreas Martin. In 2011, he joined the Petrochemical Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, where among other things he focused on the application of Heterogeneous Catalysis in different area. Presently he is Assistant Research Professor in the National Center for Nanotechnology Research, KACST. His principle research field is focused mainly on the application of nanomaterials in different area such as catalysis, photocatalysis, and energy. His scientific work has been published in more than 40 original publications. In addition, 6 patent applications have been granted in the last three years.