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Barthomeuf, Marion
Effect of Titanium Dioxide Film Thickness on Photocatalytic and Bactericidal Activities Against Listeria monocytogenes
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Structural, microstructural and bactericidal surface properties of TiO2-coated glass substrates elaborated by reactive Radiofrequency sputtering are investigated. As pathogenic bacteria in biofilms are a major concern in food industries due to their growing resistance to cleaning and sanitizing procedures, the development of photoactive surfaces exhibiting bactericidal properties is acknowledged as an effective approach to tackle bacterial contaminations. Our principal aim concerns the study of the photoactive top-layer thickness impact (from 80 nm to similar to 500 nm) on Listeria monocytogenes. Structural characterization of the TiO2 layers demonstrates that anatase and rutile phases are both present, depending on the film thickness. Photocatalytic activity of the samples has been evaluated through the degradation of aqueous methylene blue (MB) solutions under UVA light illumination for various time periods. The results show an efficiency rating increase according to TiO2 film thickness up to a threshold value close to 400 nm. Moreover, a significant decrease of the adherent bacteria number is observed after 20 min of UVA illumination. The quantitative study of the bactericidal activity associated with scanning electron microscopy observations of the postprocess bacteria damaged cells demonstrates the efficiency of the 240-nm-thick TiO2 coating sample. The results are correlated with the production of hydroxyl radicals during the process of photocatalysis.
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<div class="JournalArticle Publication short-list"> <div class="authors"> <span class="author-name" > Barthomeuf, Marion </span> <span class="author-type"> </span> ; <span class="author-name" > Castel, Xavier </span> <span class="author-type"> </span> ; <span class="author-name" > Le Gendre, Laurent </span> <span class="author-type"> </span> ; <span class="author-name" > Louis, Justine </span> <span class="author-type"> </span> ; <span class="author-name" > Denis, Martine </span> <span class="author-type"> </span> ; <span class="author-name" > Pissavin, Christine ✉ </span> <span class="author-type"> </span> </div ><div class="title"><a href="/gui2/?mode=browse¶ms=publication;30814310" mtid="30814310" target="_blank">Effect of Titanium Dioxide Film Thickness on Photocatalytic and Bactericidal Activities Against Listeria monocytogenes</a></div> <div class="pub-info"> <span class="journal-title">PHOTOCHEMISTRY AND PHOTOBIOLOGY</span> <span class="journal-volume">95</span> : <span class="journal-issue">4</span> <span class="page"> pp. 1035-1044. , 10 p. </span> <span class="year">(2019)</span> </div> <div class="pub-end"><div class="identifier-list"> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <a style="color:black" title="10.1111/php.13078" target="_blank" href="https://doi.org/10.1111/php.13078"> DOI </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="000476542100014" target="_blank" href="https://www.webofscience.com/wos/woscc/full-record/WOS:000476542100014"> WoS </a> </span> </span> </div> <div class="short-pub-prop-list"> <span class="short-pub-mtid"> Közlemény:30814310 </span> <span class="status-holder"><span class="status-data status-APPROVED"> Nyilvános </span></span> <span class="pub-core"> Idéző </span> <span class="pub-type">Folyóiratcikk (Szakcikk ) </span> <!-- && !record.category.scientific --> <span class="pub-category">Tudományos</span> </div> </div> </div><div class="JournalArticle Publication long-list"> <div class="authors"> <img title="Idézőközlemény" style="float: left" src="/frontend/resources/grid/publication-citation-icon.png"> <div class="autype autype0"> <span class="author-name" >Barthomeuf Marion </span> ; <span class="author-name" >Castel Xavier </span> ; <span class="author-name" >Le Gendre Laurent </span> ; <span class="author-name" >Louis Justine </span> ; <span class="author-name" >Denis Martine </span> ; <span class="author-name" >Pissavin Christine ✉ </span> </div> </div> <div class="title"><a href="/gui2/?mode=browse¶ms=publication;30814310" target="_blank">Effect of Titanium Dioxide Film Thickness on Photocatalytic and Bactericidal Activities Against Listeria monocytogenes</a></div> <div> <span class="journal-title">PHOTOCHEMISTRY AND PHOTOBIOLOGY</span> <span class="journal-issn">(<a target="_blank" href="https://portal.issn.org/resource/ISSN/0031-8655">0031-8655</a> <a target="_blank" href="https://portal.issn.org/resource/ISSN/1751-1097">1751-1097</a>)</span>: <span class="journal-volume">95</span> <span class="journal-issue">4</span> <span class="page"> pp 1035-1044 </span> <span class="year">(2019)</span> </div> <div class="pub-footer"> <span class="language" xmlns="http://www.w3.org/1999/html">Nyelv: Angol | </span> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <a style="color:black" title="10.1111/php.13078" target="_blank" href="https://doi.org/10.1111/php.13078"> DOI </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="000476542100014" target="_blank" href="https://www.webofscience.com/wos/woscc/full-record/WOS:000476542100014"> WoS </a> </span> </span> <div class="publication-citation"> <a target="_blank" href="/api/publication?cond=citations.related;eq;30814310&sort=publishedYear,desc&sort=title"> Idézett közlemények száma: 1 </a> </div> <div class="mtid"><span class="long-pub-mtid">Közlemény: 30814310</span> | <span class="status-data status-APPROVED"> Nyilvános </span> Idéző | <span class="type-subtype">Folyóiratcikk ( Szakcikk ) </span> | <span class="pub-category">Tudományos</span> | <span class="publication-sourceOfData">WoS XML</span> </div> <div class="lastModified">Utolsó módosítás: 2020.02.28. 10:28 Szuper Admin (admin) </div> </div></div>