Regensburg 2022 – scientific programme

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O: Fachverband Oberflächenphysik

O 52: Poster Wednesday: Adsorption and Catalysis 2

O 52.9: Poster

Wednesday, September 7, 2022, 18:00–20:00, P4

Adsorption and photocatalytic inactivation of Corona-virus like particles by anatase TiO2(101) — •Mona Kohantorabi, Michael Wagstaffe, Heshmat Noei, and Andreas Stierle — Centre for X-ray and Nano Science (CXNS), Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany

The adsorption of corona-virus like particles (VLPs), on the surface of the model catalyst TiO2(101) was investigated using different spectroscopic and microscopic techniques.

Two different methods were employed to inactivate the virus after it was loaded on the surface of TiO2: 1) UV light and 2) thermal treatment. The adsorbed virus morphology and virus particle arrangement on the surface of TiO2 were investigated using grazing-incidence small-angle scattering. Microscopic studies demonstrate that the denatured spike proteins and other virus proteins dissociate from VLPs and adsorb on the surface of TiO2.

Clarification of the interaction of the virus with the surface of semiconductor oxides will aid in obtaining a deeper understanding of the chemical processes involved in photo-inactivation of microorganisms which is important for the design of effective photocatalysts for air purification and self-cleaning materials.