Instant inactivation and rapid decomposition of Escherichia coli using a high efficiency TiO2 nanotube array photoelectrode
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Han, Yanhe
Li, Guiying
Zhang, Haimin
Zhao, Huijun
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Abstract
Highly ordered TiO2 nanotube (TNT) array film fabricated by anodisation was used as a photoelectrode in a thin-layer photoelectrochemical flow reactor, exhibiting excellent capability of instant inactivation and rapid decomposition of Escherichia coli (E. coli). With photoelectrocatalytic (PEC) treatment, 100% inactivation of E. coli (1.0 107 CFU mL 1) can be achieved within 97 s using TNT, which was almost 2.2 times faster than using a TiO2 nanoparticle (TNP) photoelectrode with a similar film thickness. The high efficiency TNT photoelectrode combining with the thin-layer photoelectrochemical flow reactor would be promising for scaling up application to effectively remove waterborne pathogens.
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RSC Advances
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3
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© 2013 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
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Chemical sciences
Analytical chemistry not elsewhere classified
Other environmental sciences not elsewhere classified
Environmental nanotechnology and nanometrology