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dc.creatorTraid, Hernán Darío
dc.creatorVera, María Laura
dc.creatorAres, Alicia Esther
dc.creatorLitter, Marta Irene
dc.date.accessioned2023-01-30T12:32:24Z
dc.date.available2023-01-30T12:32:24Z
dc.date.issued2017-04-15
dc.identifier.citationTraid, H. D., Vera, M. L., Ares, A. E., y Litter, M. I. (2017). Advances on the synthesis of porous TiO2 coatings by anodic spark oxidation : photocatalytic reduction of Cr (VI). Materials Chemistry and Physics. Amsterdam, Países Bajos: Elsevier; 191, pp. 106-113.es_AR
dc.identifier.issn0254-0584
dc.identifier.otherCCPI-CNyE-A-123
dc.identifier.other8979
dc.identifier.urihttps://hdl.handle.net/20.500.12219/4436
dc.descriptionFil: Traid, Hernán Darío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico (Nordeste). Instituto de Materiales de Misiones; Argentina.es_AR
dc.descriptionFil: Traid, Hernán Darío. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Materiales de Misiones; Argentina.es_AR
dc.descriptionFil: Vera, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico (Nordeste). Instituto de Materiales de Misiones; Argentina.es_AR
dc.descriptionFil: Vera, María Laura. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Materiales de Misiones; Argentina.es_AR
dc.descriptionFil: Ares, Alicia Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico (Nordeste). Instituto de Materiales de Misiones; Argentina.es_AR
dc.descriptionFil: Ares, Alicia Esther. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Materiales de Misiones; Argentina.es_AR
dc.descriptionFil: Litter, Marta Irene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.descriptionFil: Litter, Marta Irene. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia Química; Argentina.es_AR
dc.descriptionFil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina.es_AR
dc.description.abstractPorous TiO2 coatings were obtained by anodic oxidation in spark discharge conditions, varying the range of current density (200–3000 A m−2) and the electrolyte concentration (H2SO4; 1 and 4 M). The samples were characterized by SEM, XRD and DRS. The photocatalytic activity was evaluated using the Cr(VI)/EDTA reductive system to find the optimal conditions for a high photocatalytic activity. A higher electrolyte concentration increased the pore diameter, the porous fraction and the coating thickness and, consequently, the photocatalytic activity; a higher current density improved the performance of coatings. A relationship between the anatase fraction and the photocatalytic activity of the samples was demonstrated, with a maximum activity close to 0.65 anatase fraction. The thermal treatment of the anodic coatings improved also the photocatalytic activity, without changes on neither the morphology nor the anatase fraction. The maximum Cr(VI) transformation achieved by the most active coating was 89.1% while a coating prepared with Evonik P25 achieved only 69.9%. The obtained TiO2 anodic coatings present great potential for application in heterogeneous photocatalysis processes in water and wastewater treatment as supported photocatalysts.en
dc.formatapplication/pdf
dc.format.extent1.880 MB
dc.language.isoengen
dc.publisherElsevieren
dc.relationinfo:eu-repo/semantics/altIdentifier/urn/https://www.sciencedirect.com/science/article/abs/pii/S0254058417300603
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectTiO2 coatingsen
dc.subjectAnodic oxidationen
dc.subjectCr(VI) reductionen
dc.subjectHeterogeneous photocatalysisen
dc.titleAdvances on the synthesis of porous TiO2 coatings by anodic spark oxidation : photocatalytic reduction of Cr(VI)en
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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