Berlin 2024 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 50: Supported Nanoclusters: Structure, Reaction, Catalysis

O 50.4: Vortrag

Mittwoch, 20. März 2024, 11:15–11:30, TC 006

Cu Oxide Nanoparticles for Virus Inactivation — •Daniel Silvan Dolling^{1, 2}, Miguel Blanco Garcia^{1, 2}, Jan-Christian Schober^{1, 2}, Mohammad Ebrahim Haji Naghi Tehrani^{1, 2}, Ming Chao Kao^{1, 2}, Andreas Stierle^{1, 2}, and Heshmat Noei² — ¹Deutsches Elektronen Synchrotron (DESY) — ²Universität Hamburg

Copper and its oxides are well known for their antiviral and antibacterial properties, more recently including the inactivation of SARS-CoV-2 [1, 2, 3]. The combination of Cu oxides with TiO2 has attracted interest due to the photocatalytic activity of the combined system. For the photocatalytic activity, the specific oxidation state of Cu is paramount, as the oxidation states offer different pathways for visible light activity. Up to now, most research regarding virus inactivation has focused on powder systems. Here, we investigate the effects of different Cu nanoparticle sizes and coverages on single crystalline TiO2(110) surface by X-ray photoelectron spectroscopy(XPS). Moreover, as the oxide state is playing a major role in the (photo-)activity, we investigate the in-situ oxidation of Cu nanoparticles via XRD, XPS and SEM. [1] M. Hosseini et al., Scientific Reports 12 (2021), 5919-5928. [2] A. Purniawan et al., Scientific Reports 12 (2022). [3] M. Liu et al., J. Mater. Chem. A 3 (2015), 17312-17319.

Keywords: Photocatalysis; Cu Oxidation; TiO2; Virus Inactivation; Nanoparticle