Nanostructured TiO₂ anatase-rutile-carbon solid coating with visible light antimicrobial activity.

ABSTRACT: TiO₂ photocatalyst is of interest for antimicrobial coatings on hospital touch-surfaces. Recent research has focused on visible spectrum enhancement of photocatalytic activity. Here, we report TiO₂ with a high degree of nanostructure, deposited on stainless steel as a solid layer more than 10 μm thick by pulsed-pressure-MOCVD. The TiO₂ coating exhibits a rarely-reported microstructure comprising anatase and rutile in a composite with amorphous carbon. Columnar anatase single crystals are segmented into 15-20 nm thick plates, resulting in a mille-feuilles nanostructure. Polycrystalline rutile columns exhibit dendrite generation resembling pine tree strobili. We propose that high growth rate and co-deposition of carbon contribute to formation of the unique na

SUBMITTER: Krumdieck SP 

PROVIDER: S-EPMC6374394 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature