Penka Vasileva received M.S. in Chemistry and Ph.D. in Chemistry from Sofia University “St. Kliment Ohridski”, Bulgaria in 1981 and 2003, respectively. She currently serves as an Associate Professor at the Department of Inorganic Chemistry, Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Bulgaria. She has long-term interests in synthesis and characterization of noble metal nanoparticles, oxide nanostructures, new composite and hybrid nanomaterials. Her research is focused on design and application of nanomaterials as optical sensors, antibacterial agents, (photo)catalysts and sorbents for solid-phase extraction in analytical chemistry. She has published more than 65 research articles in SCI(E) journals.