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Synthesis of titanate nanostructures using amorphous precursor material and their adsorption/photocatalytic properties

2012-05Journal article Restricted access
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dc.contributor.authorMonteiro, O.
dc.contributor.authorYlhainen, E. K.
dc.contributor.authorNunes, M. R.
dc.contributor.authorSilvestre, António Jorge
dc.date.accessioned2015-09-10T13:09:59Z
dc.date.available2015-09-10T13:09:59Z
dc.date.issued2012-05
dc.description.abstractThis article reports on a new and swift hydrothermal chemical route to prepare titanate nanostructures (TNS) avoiding the use of crystalline TiO2 as starting material. The synthesis approach uses a commercial solution of TiCl3 as titanium source to prepare an amorphous precursor, circumventing the use of hazardous chemical compounds. The influence of the reaction temperature and dwell autoclave time on the structure and morphology of the synthesised materials was studied. Homogeneous titanate nanotubes with a high length/diameter aspect ratio were synthesised at 160 degrees C and 24 h. A band gap of 3.06 +/- 0.03 eV was determined for the TNS samples prepared in these experimental conditions. This value is red shifted by 0.14 eV compared to the band gap value usually reported for the TiO2 anatase. Moreover, such samples show better adsorption capacity and photocatalytic performance on the dye rhodamine 6G (R6G) photodegradation process than TiO2 nanoparticles. A 98% reduction of the R6G concentration was achieved after 45 min of irradiation of a 10 ppm dye aqueous solution and 1 g L-1 of TNS catalyst.por
dc.identifier.citationMONTEIRO, O. C.; [et al] – Synthesis of titanate nanostructures using amorphous precursor material and their adsorption/photocatalytic properties. Journal of Materials Science. ISSN: 0022-2461. Vol. 47, nr. 10 (2012), pp. 4305-4312por
dc.identifier.doi10.1007/s10853-012-6281-x
dc.identifier.issn0022-2461
dc.identifier.urihttp://hdl.handle.net/10400.21/5160
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.relationFCT - PTDC/CTM-NAN/113021/2009
dc.relationIAESTE
dc.subjectHydrothermal Treatmentpor
dc.subjectNanotubespor
dc.subjectTiO2por
dc.subjectMorphologypor
dc.subjectMicrostructurespor
dc.subjectStabilitypor
dc.subjectNanorodspor
dc.subjectCOpor
dc.titleSynthesis of titanate nanostructures using amorphous precursor material and their adsorption/photocatalytic propertiespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUSA
oaire.citation.endPage4312por
oaire.citation.issue10por
oaire.citation.startPage4305por
oaire.citation.titleJournal of Materials Sciencepor
oaire.citation.volume47por
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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