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O: Fachverband Oberflächenphysik
O 57: Focus Session: Semiconductor Surface Chemistry – from Reaction Mechanisms to Well-Ordered Interfaces II
O 57.5: Vortrag
Mittwoch, 29. März 2023, 16:30–16:45, GER 38
Adsorption and photocatalytic inactivation of SARS-CoV-2 and virus like particles on the surface of anatase TiO2(101) — •Mona Kohantorabi1, Michael Wagstaffe1, Marcus Creutzburg1, Esko Erick Beck1, Johannes Roessler2, Reinhard Zeidler2, Alexander Herrmann3, Martin Feuerherd3, Gregor Ebert3, Gabriela Guédez4, Christian Löw4, Roland Thuenauer4, Thomas F. Keller1,5, Benedikt Sochor6, Matthias Schwartzkopf6, Andrei Chumakov6, Stephan V. Roth6, Ulrike Protzer3, Wolfgang Hammerschmidt2, Andreas Stierle1,5, and Heshmat Noei1 — 1Centre for X-ray and Nano Science, DESY — 2Helmholtz Zentrum München — 3Technical University of Munich — 4Centre for Structural Systems Biology, DESY — 5Department of Physics, University of Hamburg — 6Deutsches Elektronen-Synchrotron
In this contribution, adsorption of SARS-CoV-2 and SARS-CoV-2 like particles (VLPs) were investigated on the surface of the model photocatalyst TiO2(101). The samples were analyzed by grazing-incidence small-angle X-ray scattering (GISAXS), atomic force microscopy (AFM), transmission electron microscopy and X-ray photoelectron spectroscopy to obtain insight into the interaction of the SARS-CoV-2 and VLPs with the surface of TiO2(101). Furthermore, the UV induced photo inactivation of adsorbed species was investigated. AFM and GISAXS results on the UV-treated sample suggested that adsorbed viral particles undergo damage and photocatalytic oxidation on the surface of TiO2 which can affect the structural proteins.