{"id":2976,"date":"2015-03-08T19:35:08","date_gmt":"2015-03-08T18:35:08","guid":{"rendered":"http:\/\/www.fluoritech.it\/?p=2976"},"modified":"2025-12-16T13:45:21","modified_gmt":"2025-12-16T12:45:21","slug":"surface-fluorination-on-tio2-catalyst-induced-by-photodegradation-of-perfluorooctanoic-acid","status":"publish","type":"post","link":"https:\/\/www.fluoritech.com\/?p=2976","title":{"rendered":"Surface fluorination on TiO2 catalyst induced by photodegradation of perfluorooctanoic acid"},"content":{"rendered":"<p><a href=\"http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0920586114003848#\"><img loading=\"lazy\" decoding=\"async\" class=\"cover aligncenter\" src=\"http:\/\/ars.els-cdn.com\/content\/image\/1-s2.0-S0920586114X00210-cov150h.gif\" alt=\"Catalysis Today\" width=\"113\" height=\"150\" border=\"1\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Author(s): Sara Gatto, Maurizio Sansotera, Federico Persico, Massimo Gola, Carlo Pirola, Walter Panzeri, Walter Navarrini, Claudia L. Bianchi<\/p>\n<p>Source: Catalysis Today<br \/>\nVolume: 241 Pages: 8-14<br \/>\nPublished: Mar (2015)<br \/>\nDOI: 10.1016\/j.cattod.2014.04.031<\/p>\n<p>ABSTRACT:<\/p>\n<p style=\"text-align: justify;\">The photoabatement of perfluorooctanoic acid in aqueous solution has been performed with a commercial nano-sized TiO2-based photocatalyst content of 0.66 g\/L under an UV irradiation of 95 W\/m2. PFOA degradation intermediates were investigated by HPLC-MS and 19F-NMR analysis. Evidences of adegradation mechanism based on two competitive pathways are discussed: photo-redox and beta-scission pathways. Shorter perfluorinated carboxylic acids, CnF2n+1COOH (n = 1-6), as expected degradation intermediates, were identified and their concentration trends over time were determined. The apparent pseudo-first order kinetic constant expressed as rate of PFOA disappearance was also measured: k<em>app<\/em> 0.1296 h-1. The influence of fluoride ions on TiO2 surface was analyzed by XPS technique, revealing asurface modification that affects the performances of the catalyst.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Author(s): Sara Gatto, Maurizio Sansotera, Federico Persico, Massimo Gola, Carlo Pirola, Walter Panzeri, Walter Navarrini, Claudia L. Bianchi Source: Catalysis Today Volume: 241 Pages: 8-14 Published: Mar (2015) DOI: 10.1016\/j.cattod.2014.04.031 ABSTRACT: The photoabatement of perfluorooctanoic acid in aqueous solution has been performed with a commercial nano-sized TiO2-based photocatalyst content of 0.66 g\/L under an UV [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"footnotes":""},"categories":[57,31],"tags":[],"class_list":["post-2976","post","type-post","status-publish","format-standard","hentry","category-papers-2015","category-publications"],"_links":{"self":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/2976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2976"}],"version-history":[{"count":7,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/2976\/revisions"}],"predecessor-version":[{"id":2989,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/2976\/revisions\/2989"}],"wp:attachment":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}