Surface and Antibacterial Properties of Titanium Dioxide Nanoparticles Synthesized in Plasma Discharge under Ultrasonic Cavitation

¹ P.N. Lebedev Physical Institute of Russian Academy of Sciences, Leninsky pr-t, 53, Moscow, Russian Federation
² Moscow Aviation Institute (National Research University), Volokolamskoe shosse, 4, Moscow, Russian Federation
³ K.G. Razumovsky Moscow State University of technologies and management (The First Cossack University), St. Zemlyanoy Val, 73, Moscow, Russian Federation
⁴ N.S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, Leninsky pr-t, 31, Moscow, Russian Federation
⁵ National University of Science and Technology MISIS, Leninsky pr-t, 4, Moscow, Russian Federation
⁶ V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina str., 26, Moscow, Russian Federation

Abstract

In this work, it is shown that intensive treatment of dispersed systems with ultrasound is an effective method for enhancing the interaction of particles and polymer with the subsequent formation of adsorption layers of high thickness and strength. This makes possible to obtain highly stable dispersed systems with a modified surface of the solid phase. The studies proved the important role of intensive ultrasonic action for controlling the properties of the nanoparticles surface in heterophase systems. It is shown that an increase in the activity of the surface of nanoparticles as a result of ultrasonic treatment is of great importance for the study of their antibacterial activity: after ultrasonic activation, nanoparticles are more active in interaction with cell membranes.