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dc.provenanceCONICET-
dc.creatorRengifo Herrera, Julian Andres-
dc.creatorBlanco, Mirta Noemi-
dc.creatorFidalgo, María Marta-
dc.creatorPizzio, Luis Rene-
dc.date2018-02-27T21:42:29Z-
dc.date2018-02-27T21:42:29Z-
dc.date2016-11-
dc.date2018-02-19T16:57:27Z-
dc.date.accessioned2019-04-29T15:44:40Z-
dc.date.available2019-04-29T15:44:40Z-
dc.date.issued2016-11-
dc.identifierRengifo Herrera, Julian Andres; Blanco, Mirta Noemi; Fidalgo, María Marta; Pizzio, Luis Rene; Visible-light-absorbing Evonik P-25 nanoparticles modified with tungstophosphoric acid and their photocatalytic activity on different wavelengths; Pergamon-Elsevier Science Ltd; Materials Research Bulletin; 83; 11-2016; 360-368-
dc.identifier0025-5408-
dc.identifierhttp://hdl.handle.net/11336/37368-
dc.identifierCONICET Digital-
dc.identifierCONICET-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/300887-
dc.descriptionFor the first time, Evonik P-25 nanoparticles were impregnated with tungstophosphoric acid (TPA) (30% w/w) and annealed at two different temperatures, 200 °C (P25-TPA-200) and 500 °C (P25-TPA-500) for 1 h. Samples were characterized by different analytical techniques. Their photocatalytic activity was evaluated in the degradation of malachite green (MG) solutions at pH 5.0 upon three different irradiations: λ1 > 320 nm, λ2 > 450 nm and λ3 > 590 nm. Only sample P25-TPA-500 showed visible-light absorption. This absorption could be related to the formation of a surface complex TPA Keggin anion-TiO2. P25-TPA-500 and P25-TPA-200 samples showed an important dark adsorption of MG dye (∼30%); however, sample P25-TPA-500 exhibited the highest photocatalytic activity either under irradiation λ1 or λ2. The presence of tert-butyl alcohol (TBA), an OH scavenger affected the photocatalytic reaction upon irradiation λ1, but just slightly upon irradiation λ2. Finally, P25-TPA-200 exhibited a higher leaching of TPA than P25-TPA-500 samples.-
dc.descriptionFil: Rengifo Herrera, Julian Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina-
dc.descriptionFil: Blanco, Mirta Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina-
dc.descriptionFil: Fidalgo, María Marta. Instituto Tecnológico de Buenos Aires; Argentina. University of Missouri; Estados Unidos-
dc.descriptionFil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.languageeng-
dc.publisherPergamon-Elsevier Science Ltd-
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.materresbull.2016.06.026-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0025540816302744-
dc.rightsinfo:eu-repo/semantics/restrictedAccess-
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/-
dc.sourcereponame:CONICET Digital (CONICET)-
dc.sourceinstname:Consejo Nacional de Investigaciones Científicas y Técnicas-
dc.sourceinstacron:CONICET-
dc.source.urihttp://hdl.handle.net/11336/37368-
dc.subjectSEMICONDUCTORS-
dc.subjectOPTICAL PROPERTIES-
dc.subjectELECTRON MICROSCOPY-
dc.subjectNUCLEAR MAGNETIC RESONANCE (NMR)-
dc.subjectRAMAN SPECTROSCOPY-
dc.subjectOtras Ciencias Químicas-
dc.subjectCiencias Químicas-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.titleVisible-light-absorbing Evonik P-25 nanoparticles modified with tungstophosphoric acid and their photocatalytic activity on different wavelengths-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
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