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Iron oxide nanoparticles supported on diamond nanoparticles as efficient and stable catalyst for the visible light assisted Fenton reaction

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Iron oxide nanoparticles supported on diamond nanoparticles as efficient and stable catalyst for the visible light assisted Fenton reaction

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dc.contributor.author Espinosa-López, Juan Carlos es_ES
dc.contributor.author Catalá, Cristina es_ES
dc.contributor.author Navalón Oltra, Sergio es_ES
dc.contributor.author Ferrer Ribera, Rosa Belén es_ES
dc.contributor.author Alvaro Rodríguez, Maria Mercedes es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2019-06-16T20:00:58Z
dc.date.available 2019-06-16T20:00:58Z
dc.date.issued 2018 es_ES
dc.identifier.issn 0926-3373 es_ES
dc.identifier.uri http://hdl.handle.net/10251/122277
dc.description.abstract [EN] Iron oxide nanoparticles (Fe-ox NPs) have been supported on the hydroxylated surface of modified diamond nanoparticles (D3). Characterization data show that, once formed, Fe NPs are spontaneously oxidized under ambient conditions, exhibiting a good dispersion of small oxidized Fe-ox NPs (2.2 +/- 0.5 nm) on D3. It has been observed that the activity of Fe-ox/D3 as heterogeneous Fenton catalyst for phenol degradation by H2O2 can be assisted by visible light irradiation. Fe-ox/D3 exhibits a superior activity compared with analogous catalysts based on activated carbon, graphite or the benchmark Fe-ox/TiO2 photocatalyst. Fe-ox/D3 exhibits comparable activity to Ag/D3 that is one of the most active catalysts ever reported for this reaction. In addition, Fe-ox/D3 presents higher stability and recyclability than analogous Cu/D3. A minimum accumulated turnover number of 38,000 can be achieved using Fe-ox/D3 as photocatalyst. The heterogeneous photoFenton process using phenol as model pollutant and Fe-ox/D3 as catalyst under visible light irradiation can be implemented prior to an aerobic biological treatment resulting in a biodegradable effluent which lacks ecotoxicity, as determined by measurement of the biological oxygen demand. Transient absorption spectroscopy provides evidence in support of the formation upon irradiation of Fe-ox/D3 of photogenerated charge separation state attributed to electrons and holes. Electron paramagnetic resonance and selective quenching experiments indicate that hydroxyl radicals are the main reactive oxygen species generated in the photo-assisted Fenton reaction promoted by Fe-ox/D3. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and CTQ2015-69153 and CTQ2014-53292-R) and Generalitat Valenciana (Prometeo 2013/14) and is grateful acknowledged. SN thanks financial support by the Fundacion Ramon Areces for funding (XVIII Concurso Nacional para la Adjudicacion de Ayudas a la Investigacion en Ciencias de la Vida y de la Materia, 2016). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/CTQ2015-69153-C2-1-R es_ES
dc.relation MINECO/CTQ2014-53292-R-AR es_ES
dc.relation GV/PROMETEO/2013/014 es_ES
dc.relation.ispartof Applied Catalysis B Environmental es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Heterogeneous catalysis es_ES
dc.subject PhotoFenton reaction es_ES
dc.subject Waste water treatment es_ES
dc.subject Iron oxide nanoparticles es_ES
dc.subject Diamond nanoparticles es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Iron oxide nanoparticles supported on diamond nanoparticles as efficient and stable catalyst for the visible light assisted Fenton reaction es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.apcatb.2017.12.060 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Espinosa-López, JC.; Catalá, C.; Navalón Oltra, S.; Ferrer Ribera, RB.; Alvaro Rodríguez, MM.; García Gómez, H. (2018). Iron oxide nanoparticles supported on diamond nanoparticles as efficient and stable catalyst for the visible light assisted Fenton reaction. Applied Catalysis B Environmental. 226:242-251. https://doi.org/10.1016/j.apcatb.2017.12.060 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.apcatb.2017.12.060 es_ES
dc.description.upvformatpinicio 242 es_ES
dc.description.upvformatpfin 251 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 226 es_ES
dc.relation.pasarela S\382621 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Economía y Empresa es_ES


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