Plasma-deposited AgOx-doped TiOx coatings enable rapid antibacterial activity based on ROS generation

Hegemann, Dirk and Hanselmann, Barbara and Zuber, Flavia and Pan, Fei and Gaiser, Sandra and Rupper, Patrick and Maniura-Weber, Katharina and Ruffieux, Kurt and Ren, Qun. (2022) Plasma-deposited AgOx-doped TiOx coatings enable rapid antibacterial activity based on ROS generation. Plasma Processes and Polymers, 19 (7). p. 2100246.

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Official URL: https://edoc.unibas.ch/90162/

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Abstract To enable a rapid-acting antibacterial mechanism without the release of biocidal substances, TiO2 catalysts have been considered based on the generation of reactive oxygen species (ROS). Doping with dissimilar metals generates electron-hole pairs with narrow band gaps promoting the production of ROS. Here, plasma technology is investigated to deposit Ag nano islets on defective TiOx films, stabilized by plasma postoxidation suppressing Ag ion release. Importantly, ROS generation is maintained upon storage in the dark yet with diminishing efficacy; however, it can be restored by exposure to visible light. The rapid-acting antibacterial properties are found to strongly correlate with ROS generation, which can even be maintained by functionalization with hydrophobic plasma polymer films. The cytocompatible coatings offer promising applications for implants and other medical devices.
Faculties and Departments:05 Faculty of Science > Departement Chemie
UniBasel Contributors:Pan, Fei
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:11 Jan 2024 10:05
Deposited On:02 Nov 2022 07:54

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