The nature of chlorine-inhibition of photocatalytic degradation of dichloroacetic acid in a TiO2-based microreactor

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dc.identifier.uri http://dx.doi.org/10.15488/73
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/91
dc.contributor.author Krivec, M.
dc.contributor.author Dillert, Ralf
dc.contributor.author Bahnemann, Detlef W.
dc.contributor.author Mehle, A.
dc.contributor.author Strancar, J.
dc.contributor.author Drazic, G.
dc.date.accessioned 2015-10-23T13:51:37Z
dc.date.available 2015-10-23T13:51:37Z
dc.date.issued 2014
dc.identifier.citation Krivec, M.; Dillert, R.; Bahnemann, D. W.; Mehle, A.; Strancar, J.; Drazic, G.: The nature of chlorine-inhibition of photocatalytic degradation of dichloroacetic acid in a TiO2-based microreactor. In: Physical Chemistry Chemical Physics 16 (2014), Nr. 28, S. 14867-14873. DOI: http://dx.doi.org/10.1039/c4cp01043d
dc.description.abstract Photocatalytic degradation of dichloroacetic acid (DCA) was studied in a continuous-flow set-up using a titanium microreactor with an immobilized double-layered TiO2 nanoparticle/nanotube film. Chloride ions, formed during the degradation process, negatively affect the photocatalytic efficiency and at a certain concentration (approximately 0.5 mM) completely stop the reaction in the microreactor. Two proposed mechanisms of inhibition with chloride ions, competitive adsorption and photogenerated-hole scavenging, have been proposed and investigated by adsorption isotherms and electron paramagnetic resonance (EPR) measurements. The results show that chloride ions block the DCA adsorption sites on the titania surface and reduce the amount of adsorbed DCA molecules. The scavenging effect of chloride ions during photocatalysis through the formation of chlorine radicals was not detected. eng
dc.description.sponsorship Slovenian Research Agency/P2-0084
dc.description.sponsorship Slovenian Research Agency/J2-4309
dc.description.sponsorship Slovene Human Resources Development and Scholarship Fund/Ad Futura
dc.language.iso eng eng
dc.publisher Cambridge : Royal Society of Chemistry
dc.relation.ispartofseries Physical Chemistry Chemical Physics 16 (2014), Nr. 28
dc.rights CC BY-NC 3.0
dc.rights.uri http://creativecommons.org/licenses/by-nc/3.0/
dc.subject rate enhancement eng
dc.subject inorganic-ions eng
dc.subject tio2 eng
dc.subject oxidation eng
dc.subject radicals eng
dc.subject reactor eng
dc.subject.ddc 540 | Chemie ger
dc.title The nature of chlorine-inhibition of photocatalytic degradation of dichloroacetic acid in a TiO2-based microreactor eng
dc.type article
dc.type Text
dc.relation.essn 1463-9084
dc.relation.issn 1463-9076
dc.relation.doi http://dx.doi.org/10.1039/c4cp01043d
dc.bibliographicCitation.issue 28
dc.bibliographicCitation.volume 16
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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