Synthesis of highly dispersed gold nanoparticles on Al2O3, SiO2, and TiO2 for the solvent-free oxidation of benzyl alcohol under low metal loadings

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dc.contributor.authorGUALTEROS, JESUS A.D.
dc.contributor.authorGARCIA, MARCO A.S.
dc.contributor.authorSILVA, ANDERSON G.M. da
dc.contributor.authorRODRIGUES, THENNER S.
dc.contributor.authorCANDIDO, EDUARDO G.
dc.contributor.authorSILVA, FELIPE A. e
dc.contributor.authorFONSECA, FABIO C.
dc.contributor.authorQUIROZ, JHON
dc.contributor.authorOLIVEIRA, DANIELA C. de
dc.contributor.authorTORRESI, SUSANA I.C. de
dc.contributor.authorMOURA, CARLA V.R. de
dc.contributor.authorCAMARGO, PEDRO H.C.
dc.contributor.authorMOURA, EDMILSON M. de
dc.coverageInternacionalpt_BR
dc.date.accessioned2018-12-04T16:43:19Z
dc.date.available2018-12-04T16:43:19Z
dc.date.issued2019pt_BR
dc.description.abstractWe reported the organic template-free synthesis of gold (Au) nanoparticles (NPs) supported on TiO2, SiO2, and Al2O3 displaying uniform Au sizes and high dispersions over the supports. The Au-based catalysts were prepared by a deposition– precipitation method using urea as the precipitating agent. In the next step, the solvent-free oxidation of benzyl alcohol was investigated as model reaction using only 0.08–0.05 mol% of Au loadings and oxygen (O2) as the oxidant. Very high catalytic performances (TOF up to 443,624 h-1) could be achieved. Specifically, we investigated their catalytic activities, selectivity, and stabilities as well as the role of metal–support interactions over the performances. The conversion of the substrate was found to be associated with the nature of the employed support as the Au NPs presented similar sizes in all materials. A sub-stoichiometric amount of base was sufficient for the catalyst activation and the observation of the catalysts profile over the time enable insights on their recyclability performances. We believe this reported method represents a facile approach for the synthesis of uniform Au-supported catalysts displaying high performances.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDFAPESP: 14/09087-4; 14/50279-4; 15/21366-9; 17/12407-9pt_BR
dc.format.extent238-251pt_BR
dc.identifier.citationGUALTEROS, JESUS A.D.; GARCIA, MARCO A.S.; SILVA, ANDERSON G.M. da; RODRIGUES, THENNER S.; CANDIDO, EDUARDO G.; SILVA, FELIPE A. e; FONSECA, FABIO C.; QUIROZ, JHON; OLIVEIRA, DANIELA C. de; TORRESI, SUSANA I.C. de; MOURA, CARLA V.R. de; CAMARGO, PEDRO H.C.; MOURA, EDMILSON M. de. Synthesis of highly dispersed gold nanoparticles on Al2O3, SiO2, and TiO2 for the solvent-free oxidation of benzyl alcohol under low metal loadings. <b>Journal of Materials Science</b>, v. 54, n. 1, p. 238-251, 2019. DOI: <a href="https://dx.doi.org/10.1007/s10853-018-2827-x">10.1007/s10853-018-2827-x</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29310.
dc.identifier.doi10.1007/s10853-018-2827-xpt_BR
dc.identifier.fasciculo1pt_BR
dc.identifier.issn0022-2461pt_BR
dc.identifier.orcidaguardandopt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0708-2021
dc.identifier.percentilfi65.764pt_BR
dc.identifier.percentilfiCiteScore86.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29310
dc.identifier.vol54pt_BR
dc.relation.ispartofJournal of Materials Sciencept_BR
dc.rightsopenAccesspt_BR
dc.subjectsynthesis
dc.subjectnanoparticles
dc.subjectoxidation
dc.subjectoxidizers
dc.subjecttitanium oxides
dc.subjectsilica
dc.subjectaluminium oxides
dc.subjectbenzyl alcohol
dc.subjectcatalysts
dc.subjectdispersions
dc.subjectgold
dc.titleSynthesis of highly dispersed gold nanoparticles on Al2O3, SiO2, and TiO2 for the solvent-free oxidation of benzyl alcohol under low metal loadingspt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorEDUARDO GUIMARAES CANDIDO
ipen.autorFABIO CORAL FONSECA
ipen.autorFELIPE ANCHIETA E SILVA
ipen.autorTHENNER SILVA RODRIGUES
ipen.codigoautor14781
ipen.codigoautor943
ipen.codigoautor14595
ipen.codigoautor14641
ipen.contributor.ipenauthorEDUARDO GUIMARAES CANDIDO
ipen.contributor.ipenauthorFABIO CORAL FONSECA
ipen.contributor.ipenauthorFELIPE ANCHIETA E SILVA
ipen.contributor.ipenauthorTHENNER SILVA RODRIGUES
ipen.date.recebimento18-12pt_BR
ipen.identifier.fi3.553pt_BR
ipen.identifier.fiCiteScore6.2
ipen.identifier.ipendoc25099pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi3.000 - 4.499
ipen.range.percentilfi50.00 - 74.99
ipen.type.genreArtigo
relation.isAuthorOfPublicatione6b2d741-8e53-4e1c-af42-0b2b98fa54fd
relation.isAuthorOfPublicationaa9a4b52-270e-4ea4-a566-a1107da1e0cf
relation.isAuthorOfPublicationcd939405-6736-4c8a-abe0-22ab7253ff28
relation.isAuthorOfPublication290c6b26-c06a-4802-b418-2360378a859c
relation.isAuthorOfPublication.latestForDiscovery290c6b26-c06a-4802-b418-2360378a859c
sigepi.autor.atividadeRODRIGUES, THENNER S.:14641:610:Npt_BR
sigepi.autor.atividadeCANDIDO, EDUARDO G.:14781:610:Npt_BR
sigepi.autor.atividadeSILVA, FELIPE A. E:14595:610:Npt_BR
sigepi.autor.atividadeFONSECA, FABIO C.:943:610:Npt_BR
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