Surface fluorination on TiO2 catalyst induced by photodegradation of perfluorooctanoic acid (Articolo in rivista)

Type
Label
  • Surface fluorination on TiO2 catalyst induced by photodegradation of perfluorooctanoic acid (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.cattod.2014.04.031 (literal)
Alternative label
  • Gatto, Sara; Sansotera, Maurizio; Persico, Federico; Gola, Massimo; Pirola, Carlo; Panzeri, Walter; Navarrini, Walter; Bianchi, Claudia L. (2015)
    Surface fluorination on TiO2 catalyst induced by photodegradation of perfluorooctanoic acid
    in Catalysis Today
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gatto, Sara; Sansotera, Maurizio; Persico, Federico; Gola, Massimo; Pirola, Carlo; Panzeri, Walter; Navarrini, Walter; Bianchi, Claudia L. (literal)
Pagina inizio
  • 8 (literal)
Pagina fine
  • 14 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 241 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Milan; Polytechnic University of Milan; Consorzio Interuniv Nazl Sci & Tecnol Mat INSTM; Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • Surface fluorination on TiO2 catalyst induced by photodegradation of perfluorooctanoic acid (literal)
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 irradiation of 95 W/m(2). PFOA degradation intermediates were investigated by HPLC-MS and F-19-NMR analysis. Evidences of a degradation mechanism based on two competitive pathways are discussed: photo-redox and beta-scission pathways. Shorter perfluorinated carboxylic acids, CnF2n+1 COOH (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(app)0.1296 h(-1). The influence of fluoride ions on TiO2 surface was analyzed by XPS technique, revealing a surface modification that affects the performances of the catalyst. (C) 2014 Elsevier B.V. All rights reserved. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it