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Synthesis of Sub-5 NM Co-Doped SnO2 nanoparticles and their structural microstructural, optical and photocatalytic properties

2014-10-15Journal article Restricted access
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dc.contributor.authorEntradas, T.
dc.contributor.authorCabrita, J. F.
dc.contributor.authorDalui, S.
dc.contributor.authorNunes, M. R.
dc.contributor.authorMonteiro, O. C.
dc.contributor.authorSilvestre, António Jorge
dc.date.accessioned2015-08-25T11:10:24Z
dc.date.available2015-08-25T11:10:24Z
dc.date.issued2014-10-15
dc.description.abstractA swift chemical route to synthesize Co-doped SnO2 nanopowders is described. Pure and highly stable Sn1-xCoxO2-delta (0 <= x <= 0.15) crystalline nanoparticles were synthesized, with mean grain sizes <5 nm and the dopant element homogeneously distributed in the SnO2 matrix. The UV-visible diffuse reflectance spectra of the Sn1-xCoxO2-delta samples reveal red shifts, the optical bandgap energies decreasing with increasing Co concentration. The samples' Urbach energies were calculated and correlated with their bandgap energies. The photocatalytic activity of the Sn1-xCoxO2-delta samples was investigated for the 4-hydroxylbenzoic acid (4-HBA) degradation process. A complete photodegradation of a 10 ppm 4-HBA solution was achieved using 0.02% (w/w) of Sn0.95Co0.05O2-delta nanoparticles in 60 min of irradiation. (C) 2014 Elsevier B.V. All rights reserved.por
dc.identifier.citationENTRADAS, T.; [et al] – Synthesis of Sub-5 NM Co-Doped SnO2 nanoparticles and their structural microstructural, optical and photocatalytic properties. Materials Chemistry and Physics. ISSN: 0254-0584. Vol. 147, nr. 3 (2014), pp. 563-571por
dc.identifier.doi10.1016/j.matchemphys.2014.05.032
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.urihttp://hdl.handle.net/10400.21/4991
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science SApor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0254058414003319#
dc.subjectOptical Propertiespor
dc.subjectNanostructuresmpor
dc.subjectSemiconductorspor
dc.subjectOxidespor
dc.subjectChemical Synthesispor
dc.titleSynthesis of Sub-5 NM Co-Doped SnO2 nanoparticles and their structural microstructural, optical and photocatalytic propertiespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceLausannepor
oaire.citation.endPage571por
oaire.citation.issue3por
oaire.citation.startPage563por
oaire.citation.titleMaterials Chemistry and Physicspor
oaire.citation.volume147por
person.familyNameSilvestre
person.givenNameAntónio Jorge
person.identifier.orcid0000-0001-6517-6275
person.identifier.scopus-author-id25224208600
rcaap.rightsclosedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationda27d795-d2eb-4f8c-bfa5-7053ef20f339
relation.isAuthorOfPublication.latestForDiscoveryda27d795-d2eb-4f8c-bfa5-7053ef20f339

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