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Influence of Re and Ru doping on the structural, optical and photocatalytic properties of nanocrystalline TiO2

2019-06Journal article Restricted access
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dc.contributor.authorBarrocas, Beatriz
dc.contributor.authorMonteiro, Olinda
dc.contributor.authorNunes, Manuel R.
dc.contributor.authorSilvestre, António Jorge
dc.date.accessioned2019-05-24T08:07:49Z
dc.date.available2019-05-24T08:07:49Z
dc.date.issued2019-06
dc.description.abstractTiO2 and TM-doped TiO2 (TM = Re, Ru) anatase crystalline nanopowders were synthesized by a simple hydrothermal method. Samples with nominal TM/Ti ratio of 0.01 were prepared for this study. Their structural, microstructural and optical properties were studied. The lattice parameters of the different prepared samples were calculated and their mean crystallite sizes determined to be in the range 15–7 nm, the lower values being obtained for the doped crystallites. The samples’ specific surface areas were determined and correlated with their mean crystallite sizes. The incorporation of the dopant elements results in an increase of the optical absorption in the visible range. The samples’ optical bandgap and Urbach energies were calculated from UV–Vis diffuse reflectance spectra. The photocatalytic behavior of the synthesized samples was investigated for the rhodamine B and phenol degradation processes, the kinetics of the different photo-oxidation reactions being also studied. The results showed that doping either with Re or Ru can lead to enhancement of the TiO2 photocatalytic efficiency and that, among the synthesized samples Ru-doped TiO2 is the most efficient photocatalyst for both the Rhodamine B and phenol photodegradation reactions.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBARROCAS, Beatriz; [et al] – Influence of Re and Ru doping on the structural, optical and photocatalytic properties of nanocrystalline TiO2. SN Applied Sciences. ISSN 2523-3963. Vol. 1, N.º 6 (2019), pp. 1-12pt_PT
dc.identifier.doihttps://doi.org/10.1007/s42452-019-0567-4pt_PT
dc.identifier.issn2523-3963
dc.identifier.issn2523-3971
dc.identifier.urihttp://hdl.handle.net/10400.21/10051
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Naturept_PT
dc.relationUID/MULTI/00612/2019 - FCTpt_PT
dc.relationSFRH/BD/101220/2014 - FCTpt_PT
dc.relation.publisherversionhttps://link.springer.com/content/pdf/10.1007%2Fs42452-019-0567-4.pdfpt_PT
dc.subjectTM-TiO2 nanoparticlespt_PT
dc.subjectOptical bandgappt_PT
dc.subjectUrbach energypt_PT
dc.subjectPhotocatalysispt_PT
dc.subjectOrganic pollutantspt_PT
dc.titleInfluence of Re and Ru doping on the structural, optical and photocatalytic properties of nanocrystalline TiO2pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FCTM%2F04540%2F2013/PT
oaire.citation.endPage12pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleSN Applied Sciencespt_PT
oaire.citation.volume1pt_PT
oaire.fundingStream5876
person.familyNameTrindade Martins Vidigal Barrocas
person.familyNameMonteiro
person.familyNameSilvestre
person.givenNameBeatriz
person.givenNameOlinda
person.givenNameAntónio Jorge
person.identifierR-4219-2016
person.identifier2748637
person.identifier.ciencia-id671F-9996-FEA6
person.identifier.ciencia-idDA12-8EB9-8DA3
person.identifier.orcid0000-0002-2720-1908
person.identifier.orcid0000-0002-1134-4680
person.identifier.orcid0000-0001-6517-6275
person.identifier.ridD-9936-2012
person.identifier.scopus-author-id55443805100
person.identifier.scopus-author-id7006528144
person.identifier.scopus-author-id25224208600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication35f1e1ea-f511-4b1a-a13b-2258d45cf5ab
relation.isAuthorOfPublicationd613125b-6f15-4c67-909d-2c1a1157c056
relation.isAuthorOfPublicationda27d795-d2eb-4f8c-bfa5-7053ef20f339
relation.isAuthorOfPublication.latestForDiscoveryd613125b-6f15-4c67-909d-2c1a1157c056
relation.isProjectOfPublication3297f951-302f-4f9a-a77a-f5068533d370
relation.isProjectOfPublication.latestForDiscovery3297f951-302f-4f9a-a77a-f5068533d370

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