dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2018-12-11T16:42:46Z
dc.date.available2018-12-11T16:42:46Z
dc.date.created2018-12-11T16:42:46Z
dc.date.issued2016-11-29
dc.identifierSensors and Actuators, B: Chemical, v. 236, p. 408-417.
dc.identifier0925-4005
dc.identifierhttp://hdl.handle.net/11449/168734
dc.identifier10.1016/j.snb.2016.06.022
dc.identifier2-s2.0-84975123221
dc.identifier2-s2.0-84975123221.pdf
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.
dc.languageeng
dc.relationSensors and Actuators, B: Chemical
dc.relation1,406
dc.rightsAcesso 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 ions
dc.typeArtículos de revistas


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