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Photo-assisted inactivation of Escherichia coli bacteria by silver functionalized titanate nanotubes, Ag/H2Ti2O5·H2O

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Abstract

One-dimensional titanate nanotubes (H2Ti2O5·H2O) functionalized with silver nanoparticles (AgNPs) exhibited unique properties for the effective inactivation of the Gram-negative Escherichia coli within 45 minutes under irradiation using a 65 W halogen lamp. The pathway of the photo-assisted catalytic inactivation was examined by SEM and TEM using a reproducible biological protocol for sample preparations. The membrane integrity of the bacteria was damaged due to the oxidative stress caused by the reactive oxygen species, the bacteriostatic effect of the highly-dispersed-surface AgNPs (∼5 nm) and the sharp nanotube penetration that induced the cell death.

Graphical abstract: Photo-assisted inactivation of Escherichia coli bacteria by silver functionalized titanate nanotubes, Ag/H2Ti2O5·H2O

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Publication details

The article was received on 01 Jul 2016, accepted on 07 Apr 2017 and first published on 10 Apr 2017


Article type: Paper
DOI: 10.1039/C6PP00237D
Citation: Photochem. Photobiol. Sci., 2017, Advance Article
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    Photo-assisted inactivation of Escherichia coli bacteria by silver functionalized titanate nanotubes, Ag/H2Ti2O5·H2O

    A. Patrón-Soberano, B. P. Núñez-Luna, S. Casas-Flores, A. De las Peñas, R. B. Domínguez-Espíndola and V. Rodríguez-González, Photochem. Photobiol. Sci., 2017, Advance Article , DOI: 10.1039/C6PP00237D

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