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dc.contributor.author
Testa, Juan J.
dc.contributor.author
Grela, Maria Alejandra
dc.contributor.author
Litter, Marta Irene
dc.date.available
2018-04-18T13:49:34Z
dc.date.issued
2001-06
dc.identifier.citation
Testa, Juan J.; Grela, Maria Alejandra; Litter, Marta Irene; Experimental Evidence in Favor of an Initial One-Electron-Transfer Process in the Heterogeneous Photocatalytic Reduction of Chromium(VI) over TiO 2; American Chemical Society; Langmuir; 17; 12; 6-2001; 3515-3517
dc.identifier.issn
0743-7463
dc.identifier.uri
http://hdl.handle.net/11336/42422
dc.description.abstract
Direct evidence of the involvement of Cr(V) intermediacy in Cr(VI) heterogeneous photocatalytic reduction over TiO2 was obtained by EPR spectroscopy, in the presence and absence of ethylenediaminetetraacetic acid (EDTA). The rate of formation of Cr(V) becomes rapidly inhibited in the absence of a hole scavenger. Addition ofEDTAis found to efficiently suppress the electron-shuttle mechanism by which Cr(VI) reduction is inhibited. Analysis of the data indicates that Cr(V) is formed by a one-electron-transfer process and does not involve Cr(IV) disproportion. It is suggested that Cr(III) formation occurs similarly from Cr(IV) through a charge-transfer mechanism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Edta
dc.subject
Cr(Vi)
dc.subject
Cr(V)
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Experimental Evidence in Favor of an Initial One-Electron-Transfer Process in the Heterogeneous Photocatalytic Reduction of Chromium(VI) over TiO 2
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-05T18:19:33Z
dc.journal.volume
17
dc.journal.number
12
dc.journal.pagination
3515-3517
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington
dc.description.fil
Fil: Testa, Juan J.. Universidad de Morón; Argentina
dc.description.fil
Fil: Grela, Maria Alejandra. Universidad Nacional de Mar del Plata; Argentina
dc.description.fil
Fil: Litter, Marta Irene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
dc.journal.title
Langmuir
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/la010100y
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/la010100y


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