Enhanced photocatalytic inactivation of bacterial spores on surfaces in air

TiO(2) photocatalysis with ultraviolet (UV-A) light has proven to be a highly effective process for complete inactivation of airborne microbes. However, the overall efficiency of the technology needs to be improved to make it more attractive as a defense against bio-terrorism. The present research i...

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Detalles Bibliográficos
Autores principales: Vohra, Amit, Goswami, D. Y., Deshpande, D. A., Block, S. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer-Verlag 2005
Materias:
Original Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7087714/
https://www.ncbi.nlm.nih.gov/pubmed/16044291
http://dx.doi.org/10.1007/s10295-005-0006-y
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author Vohra, Amit
Goswami, D. Y.
Deshpande, D. A.
Block, S. S.
author_facet Vohra, Amit
Goswami, D. Y.
Deshpande, D. A.
Block, S. S.
author_sort Vohra, Amit
collection PubMed
description TiO(2) photocatalysis with ultraviolet (UV-A) light has proven to be a highly effective process for complete inactivation of airborne microbes. However, the overall efficiency of the technology needs to be improved to make it more attractive as a defense against bio-terrorism. The present research investigates the enhancement in the rate of destruction of bacterial spores on metal (aluminum) and fabric (polyester) substrates with metal (silver)-doped titanium dioxide and compares it to conventional photocatalysis (TiO(2) P25/+UV-A) and UV-A photolysis. Bacillus cereus bacterial spores were used as an index to demonstrate the enhanced disinfection efficiency. The results indicate complete inactivation of B. cereus spores with the enhanced photocatalyst. The enhanced spore destruction rate may be attributed to the highly oxidizing radicals generated by the doped TiO(2).
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spelling pubmed-70877142020-03-23 Enhanced photocatalytic inactivation of bacterial spores on surfaces in air Vohra, Amit Goswami, D. Y. Deshpande, D. A. Block, S. S. J Ind Microbiol Biotechnol Original Paper TiO(2) photocatalysis with ultraviolet (UV-A) light has proven to be a highly effective process for complete inactivation of airborne microbes. However, the overall efficiency of the technology needs to be improved to make it more attractive as a defense against bio-terrorism. The present research investigates the enhancement in the rate of destruction of bacterial spores on metal (aluminum) and fabric (polyester) substrates with metal (silver)-doped titanium dioxide and compares it to conventional photocatalysis (TiO(2) P25/+UV-A) and UV-A photolysis. Bacillus cereus bacterial spores were used as an index to demonstrate the enhanced disinfection efficiency. The results indicate complete inactivation of B. cereus spores with the enhanced photocatalyst. The enhanced spore destruction rate may be attributed to the highly oxidizing radicals generated by the doped TiO(2). Springer-Verlag 2005-07-26 2005 /pmc/articles/PMC7087714/ /pubmed/16044291 http://dx.doi.org/10.1007/s10295-005-0006-y Text en © Society for Industrial Microbiology 2005 This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.
spellingShingle Original Paper
Vohra, Amit
Goswami, D. Y.
Deshpande, D. A.
Block, S. S.
Enhanced photocatalytic inactivation of bacterial spores on surfaces in air
title Enhanced photocatalytic inactivation of bacterial spores on surfaces in air
title_full Enhanced photocatalytic inactivation of bacterial spores on surfaces in air
title_fullStr Enhanced photocatalytic inactivation of bacterial spores on surfaces in air
title_full_unstemmed Enhanced photocatalytic inactivation of bacterial spores on surfaces in air
title_short Enhanced photocatalytic inactivation of bacterial spores on surfaces in air
title_sort enhanced photocatalytic inactivation of bacterial spores on surfaces in air
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7087714/
https://www.ncbi.nlm.nih.gov/pubmed/16044291
http://dx.doi.org/10.1007/s10295-005-0006-y
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