Incorporation of gold nanoparticles into Langmuir-Blodgett films of polyaniline and montmorillonite for enhanced detection of metallic ions

dc.contributor.authorDe Barros, A. [UNESP]
dc.contributor.authorConstantino, C. J.L. [UNESP]
dc.contributor.authorBortoleto, J. R.R. [UNESP]
dc.contributor.authorDa Cruz, N. C. [UNESP]
dc.contributor.authorFerreira, M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2018-12-11T16:42:46Z
dc.date.available2018-12-11T16:42:46Z
dc.date.issued2016-11-29
dc.description.abstractWe report on effects from incorporating gold nanoparticles (AuNPs) into Langmuir-Blodgett (LB) films of emeraldine salt polyaniline (PAni-ES) and organophilic montmorillonite clay (OMt). The synergistic electrocatalytic effect induced by AuNPs led to an enhanced performance in detecting trace levels of cadmium (Cd2+), lead (Pb2+) and copper (Cu2+) ions. Detection was carried out using square wave anodic stripping (SWAS) voltammetry using ITO electrodes modified with LB films made with three supramolecular architectures: PAni-ES/AuNPs, OMt/AuNPs and OMt/AuNPs/PAni-ES, and compared to LB films without AuNPs. The incorporation of AuNPs induced secondary doping of PAni-ES, inferred from FTIR, Raman and UV-vis. absorption spectroscopies. The PAni-ES chains probably became more extended and could intercalate into the OMt galleries, causing an increased interlayer spacing according to X-ray diffraction data. These results demonstrate the possible control of film properties by exploiting molecular-level interactions in multicomponent nanostructured films.en
dc.description.affiliationFaculdade de Ciências UNESP/POSMAT Univ. Estadual Paulista
dc.description.affiliationUniversidade Federal de São Carlos UFSCar Campus Sorocaba
dc.description.affiliationFaculdade de Ciências e Tecnologia UNESP Univ. Estadual Paulista
dc.description.affiliationCampus Experimental de Sorocaba UNESP Univ. Estadual Paulista
dc.description.affiliationUnespFaculdade de Ciências UNESP/POSMAT Univ. Estadual Paulista
dc.description.affiliationUnespFaculdade de Ciências e Tecnologia UNESP Univ. Estadual Paulista
dc.description.affiliationUnespCampus Experimental de Sorocaba UNESP Univ. Estadual Paulista
dc.format.extent408-417
dc.identifierhttp://dx.doi.org/10.1016/j.snb.2016.06.022
dc.identifier.citationSensors and Actuators, B: Chemical, v. 236, p. 408-417.
dc.identifier.doi10.1016/j.snb.2016.06.022
dc.identifier.file2-s2.0-84975123221.pdf
dc.identifier.issn0925-4005
dc.identifier.scopus2-s2.0-84975123221
dc.identifier.urihttp://hdl.handle.net/11449/168734
dc.language.isoeng
dc.relation.ispartofSensors and Actuators, B: Chemical
dc.relation.ispartofsjr1,406
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectElectrochemical sensors
dc.subjectGold nanoparticles
dc.subjectLangmuir-Blodgett film
dc.subjectMetallic ions detection
dc.subjectOrganophilic montmorillonite clay
dc.subjectPolyaniline
dc.titleIncorporation of gold nanoparticles into Langmuir-Blodgett films of polyaniline and montmorillonite for enhanced detection of metallic ionsen
dc.typeArtigo
unesp.author.lattes6118325967319836[2]
unesp.author.orcid0000-0002-9459-8167[5]
unesp.author.orcid0000-0002-5921-3161[2]

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