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Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds

2018-05Journal article Open access
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dc.contributor.authorAlegria, Elisabete
dc.contributor.authorDa Costa Ribeiro, Ana Paula
dc.contributor.authorMendes, Marta
dc.contributor.authorFerraria, Ana Maria
dc.contributor.authorRego, Ana
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2018-07-12T08:54:51Z
dc.date.available2020-07-01T00:30:11Z
dc.date.issued2018-05
dc.descriptionEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2016 do Instituto Politécnico de Lisboa. Código de referência IPL/2016/MechSynCat/ISEL
dc.description.abstractGold nanoparticles (AuNPs) were prepared using an eco-friendly approach in a single step by reduction of HAuCl4 with polyphenols from tea extracts, which act as both reducing and capping agents. The obtained AuNPs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet–visible spectroscopy (UV–vis), and X-ray photoelectron spectroscopy (XPS). They act as highly efficient catalysts in the reduction of various aromatic nitro compounds in aqueous solution. The effects of a variety of factors (e.g., reaction time, type and amount of reducing agent, shape, size, or amount of AuNPs) were studied towards the optimization of the processes. The total polyphenol content (TPC) was determined before and after the catalytic reaction and the results are discussed in terms of the tea extract percentage, the size of the AuNPs, and their catalytic activity. The reusability of the AuNP catalyst in the reduction of 4-nitrophenol was also tested. The reactions follow pseudo first-order kinetics.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationALEGRIA, Elisabete C. B. A.; [et al] – Effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds. Nanomaterials. ISSN 2079-4991. Vol. 8, N.º 5 (2018), pp. 1-18pt_PT
dc.identifier.doihttps://doi:10.3390/nano8050320pt_PT
dc.identifier.issn2079-4991
dc.identifier.urihttp://hdl.handle.net/10400.21/8687
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationProjeto financiado no âmbito do Concurso de Projetos de Investigação, Desenvolvimento, Inovação & Criação Artística (IDI&CA) financiados pelo Instituto Politécnico de Lisboa. IPL/2016/MechSynCat/ISELpt_PT
dc.relationSmart biopolymer surfaces for Chemical Warfare Agents catalytic degradation: involved mechanisms
dc.subjectGold nanoparticlespt_PT
dc.subjectPhytochemicalspt_PT
dc.subjectCatalysispt_PT
dc.subjectReductionpt_PT
dc.subjectNitro compoundspt_PT
dc.titleEffect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compoundspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSmart biopolymer surfaces for Chemical Warfare Agents catalytic degradation: involved mechanisms
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FNAN%2F50024%2F2013/PT
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oaire.citation.endPage18pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleNanomaterialspt_PT
oaire.citation.volume8pt_PT
oaire.fundingStream5876
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oaire.fundingStreamSFRH
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person.familyNameAlegria
person.familyNameda Costa Ribeiro
person.familyNameFerraria
person.familyNameRego
person.familyNamePombeiro
person.givenNameElisabete
person.givenNameAna Paula
person.givenNameAna Maria
person.givenNameAna
person.givenNameArmando
person.identifier863202
person.identifier1336277
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person.identifier.ciencia-idE115-5C31-30F4
person.identifier.ciencia-idF613-A8B6-9019
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person.identifier.ciencia-id8311-38FA-CEFB
person.identifier.orcid0000-0003-4060-1057
person.identifier.orcid0000-0003-4323-4328
person.identifier.orcid0000-0002-6784-6540
person.identifier.orcid0000-0002-3131-4219
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridE-9945-2012
person.identifier.ridF-8341-2014
person.identifier.ridD-9186-2015
person.identifier.ridL-4670-2013
person.identifier.ridI-5945-2012
person.identifier.scopus-author-id8315848300
person.identifier.scopus-author-id22235818800
person.identifier.scopus-author-id6508076737
person.identifier.scopus-author-id7003865928
person.identifier.scopus-author-id7006067269
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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