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dc.contributor.author
Meichtry, Jorge Martin
dc.contributor.author
Colbeau Justin, Christophe
dc.contributor.author
Custo, Graciela Susana
dc.contributor.author
Litter, Marta Irene
dc.date.available
2018-01-10T17:12:53Z
dc.date.issued
2013-07
dc.identifier.citation
Litter, Marta Irene; Custo, Graciela Susana; Meichtry, Jorge Martin; Colbeau Justin, Christophe; TiO2-photocatalytic transformation of Cr(VI) in the presence of EDTA: Comparison of different commercial photocatalysts and studies by Time Resolved Microwave Conductivity; Elsevier; Applied Catalysis B: Environmental; 144; 7-2013; 189-195
dc.identifier.issn
0926-3373
dc.identifier.uri
http://hdl.handle.net/11336/32818
dc.description.abstract
The photocatalytic efficiency for Cr(VI) transformation in the presence of etilendiaminetetraacetic acid (EDTA) at pH 2 over various commercial TiO2 samples (Evonik P25, Cristal Global PC50, PC100 and PC500, Hombikat UV100, Fluka and Kemira S230) was evaluated. The decay was adjusted to a pseudo-first order kinetics in all cases and the photocatalytic activity of the samples was estimated from the kinetic constants. The order of the photocatalytic activity was PC500 ≅ UV100 > P25 ≅ PC100 > S230 ≅ PC50 ≫ Fluka and it strongly depends on the nature of the TiO2 samples, especially on the specific surface area, except for S230 and for P25. The formation of the Cr(III)–EDTA complex in solution as a product of the Cr(VI) photocatalytic reduction was confirmed by visible spectrophotometry. Simultaneous kinetics of Cr(VI) reduction and of Cr(III)–EDTA formation has been determined for the first time and the results indicate that evolution of both species are related. TRMC measurements were applied for the first time to a reductive heterogeneous photocatalytic reaction of a metal ion system, and the experimental results were adjusted to a power law decay, relating the data to those of the photocatalytic experiments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cr(Vi)
dc.subject
Cr(Iii)
dc.subject
Edta
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Tio2-Heterogeneous Photocatalysis
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Time Resolved Microwave Conductivity (Trmc)
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
TiO2-photocatalytic transformation of Cr(VI) in the presence of EDTA: Comparison of different commercial photocatalysts and studies by Time Resolved Microwave Conductivity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-01-08T19:49:30Z
dc.journal.volume
144
dc.journal.pagination
189-195
dc.journal.pais
Países Bajos
dc.journal.ciudad
Ámsterdam
dc.description.fil
Fil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Colbeau Justin, Christophe. Universite de Paris XI. Laboratoire de Chimie Physique; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Custo, Graciela Susana. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
dc.description.fil
Fil: Litter, Marta Irene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina
dc.journal.title
Applied Catalysis B: Environmental
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.apcatb.2013.06.032
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0926337313004153
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