Cytotoxic and Bacteriostatic Activity of Nanostructured TiO2 Coatings

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Polish Journal of Microbiology

Polish Society of Microbiologists

Subject: Microbiology

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ISSN: 1733-1331
eISSN: 2544-4646

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VOLUME 65 , ISSUE 2 (June 2016) > List of articles

Cytotoxic and Bacteriostatic Activity of Nanostructured TiO2 Coatings

Alessandro Di Cerbo * / Federica Pezzuto / Antonio Scarano

Keywords : bacteriostatic effect, cytotoxic activity, TiO2 coatings

Citation Information : Polish Journal of Microbiology. Volume 65, Issue 2, Pages 225-229, DOI: https://doi.org/10.5604/17331331.1204484

License : (CC BY-NC-ND 4.0)

Received Date : 09-October-2015 / Accepted: 26-November-2015 / Published Online: 07-June-2016

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ABSTRACT

Nanostructures are structures, mainly synthetic (nanosurfaces, cylindrical nanotubes, and nanospheres), which range between 1–100 nm in at least one dimension and can be engineered to a wide range of physical properties. This paper aims to explore the bacteriostatic and cytotoxic characteristics of nano-TiO2 coated specimens of glass, stainless steel and ceramic with different thickness and roughness. The results show that stainless steel and glass specimens with a nano-TiO2 coating thickness of 200 nm have a bacteriostatic effect of 97% and 100%, respectively after 30 minutes of UV exposure. Glass specimens with a nano-TiO2 coating thickness of 750, 200 and 50 nm have a bacteriostatic effect of 86%, 93% and 100% after 60 minutes. Nano-TiO2 coatings show a great bacteriostatic but not a cytotoxic effect, thus representing a valuable alternative for biomedical applications.

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