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Influence of pretreatments on commercial diamond nanoparticles on the photocatalytic activity of supported gold nanoparticles under natural Sunlight irradiation

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Influence of pretreatments on commercial diamond nanoparticles on the photocatalytic activity of supported gold nanoparticles under natural Sunlight irradiation

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dc.contributor.author Sempere Aracil, David es_ES
dc.contributor.author Navalón Oltra, Sergio es_ES
dc.contributor.author Dancikova, Mariana es_ES
dc.contributor.author Alvaro Rodríguez, Maria Mercedes es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2015-05-19T13:18:32Z
dc.date.available 2015-05-19T13:18:32Z
dc.date.issued 2013-10
dc.identifier.issn 0926-3373
dc.identifier.uri http://hdl.handle.net/10251/50510
dc.description.abstract Fenton-treated diamond (D) nanoparticles (NPs) are suitable support of gold to promote the wet peroxidation of phenol by H2O2. One of the drawbacks of this catalyst is the need of the pretreated commercial D NPs with a large excess of H2O2 and Fe(II) salts to remove the accompanying soot matter and introduce surface single bondOH groups on D. This process generates a large amount of waste waters and consumes large quantities of reagents, being desirable to develop alternative pretreatments for commercial D NPs. In the present manuscript we describe that a light combustion of the soot matter in a furnace under controlled temperature and time leads to a D support that after annealing at 500 ̊C under hydrogen affords a modified D material that is suitable as support of gold. We have found that annealing with hydrogen produces more efficient D samples than those without annealing or submitted to annealing under nitrogen. Characterization of the samples has shown that hydrogen annealing reduces surface Cdouble bond; length as m-dashO bonds to alcohols that are beneficial for anchoring gold nanoparticles. In this way, the resulting gold catalyst can set off the disappearance of phenol in water at pH 4 with only 2.6 equiv. of H2O2 assisted by Sunlight. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry of Economy and Competitiveness (MINECO, Severo Ochoa program and CTQ 2012-32316) and Universidad Politecnica de Valencia (PAID-06-11, no 2095) is gratefully acknowledged. We thank also to the EU funded TRAIN2 project for the partial funding of networking. SN thanks to the UPV for a lecturer contract. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministry of Economy and Competitiveness (MINECO, Severo Ochoa program and CTQ 2012- 32316) es_ES
dc.relation Universidad Politécnica de Valencia (PAID-06-11, n◦ 2095) es_ES
dc.relation EU funded TRAIN2 project es_ES
dc.relation.ispartof Applied Catalysis B: Environmental es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Diamond nanoparticles es_ES
dc.subject Thermal treatment es_ES
dc.subject Gold supported es_ES
dc.subject Sunlight assisted heterogeneous photo-Fenton reaction es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Influence of pretreatments on commercial diamond nanoparticles on the photocatalytic activity of supported gold nanoparticles under natural Sunlight irradiation es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.apcatb.2013.05.016
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Sempere Aracil, D.; Navalón Oltra, S.; Dancikova, M.; Alvaro Rodríguez, MM.; García Gómez, H. (2013). Influence of pretreatments on commercial diamond nanoparticles on the photocatalytic activity of supported gold nanoparticles under natural Sunlight irradiation. Applied Catalysis B: Environmental. 142-143:259-267. doi:10.1016/j.apcatb.2013.05.016 es_ES
dc.description.accrualMethod Senia es_ES
dc.description.upvformatpinicio 259 es_ES
dc.description.upvformatpfin 267 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 142-143 es_ES
dc.relation.senia 246264


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