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Issue 12, 2011
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Understanding bactericidal performance on ambient light activated TiO2InVO4 nanostructured films

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Abstract

TiO2InVO4 nanostructured films were coated onto glass substrates and systematically investigated for their bactericidal activities using Escherichia coli (E. coli) as the model bacterium under ambient light illumination. The uniform TiO2InVO4 nanostructured films were prepared using titanium isopropoxide (TTIP) as the precursor via a simple sol–gel approach. Polyethylenimine (PEI) was used as a surfactant to ensure uniform dispersion of InVO4 and a sacrificial pore-inducing agent, generating nanostructured films. Compared to unmodified TiO2 film, the current TiO2InVO4 films exhibited enhanced bactericidal activities under ambient light illumination. Bacterial cell “photo-fixation” was demonstrated to be crucial in enhancing the bactericidal activity. A bacterial–nanostructured surface interaction mechanism was proposed for the current ambient-light activated nanostructured film.

Graphical abstract: Understanding bactericidal performance on ambient light activated TiO2–InVO4 nanostructured films

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Publication details

The article was received on 18 Aug 2011, accepted on 18 Sep 2011 and first published on 20 Oct 2011


Article type: Paper
DOI: 10.1039/C1NR11126D
Citation: Nanoscale, 2011,3, 4977-4983
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    Understanding bactericidal performance on ambient light activated TiO2InVO4 nanostructured films

    Z. He, Q. Xu and T. T. Yang Tan, Nanoscale, 2011, 3, 4977
    DOI: 10.1039/C1NR11126D

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