Novel ordered TiO2 nanodot array on 316LSS with enhanced antibacterial properties

Publication date: Available online 14 February 2020Source: Materials LettersAuthor(s): Yuanyuan Wei, Yiyang Ma, Jingjing Chen, Xuexia Yang, Shirong Ni, Feng Hong, Siyu NiAbstractA novel ordered TiO2 nanodot array on 316LSS (NTA/316LSS) was first prepared by sol-gel in situ growth method. The surface microstructure, chemical components, antibacterial activity and cytocompatibility of the samples were characterized. The results showed that anatase TiO2 nanogranules (45 ± 5 nm) were embedded into nanopits (50 ± 5 nm) and arrayed in an ordered manner. The in vitro antibacterial test showed that there was a 96.3 ± 2.4% reduction in E. coli on the NTA/316LSS surface and a 98.1 ± 1.3% reduction in S. aureus compared to that on untreated 316LSS controls. Furthermore, NTA/316LSS showed good cytocompatibility in vitro. Our study revealed that such TiO2 nanodot surface can be designed to improve the use of 316LSS for various implant application.Graphical abstract
Source: Materials Letters - Category: Materials Science Source Type: research

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