dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Universidade Federal de São Carlos (UFSCar) | |
dc.date.accessioned | 2018-12-11T16:42:46Z | |
dc.date.available | 2018-12-11T16:42:46Z | |
dc.date.created | 2018-12-11T16:42:46Z | |
dc.date.issued | 2016-11-29 | |
dc.identifier | Sensors and Actuators, B: Chemical, v. 236, p. 408-417. | |
dc.identifier | 0925-4005 | |
dc.identifier | http://hdl.handle.net/11449/168734 | |
dc.identifier | 10.1016/j.snb.2016.06.022 | |
dc.identifier | 2-s2.0-84975123221 | |
dc.identifier | 2-s2.0-84975123221.pdf | |
dc.description.abstract | We 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.language | eng | |
dc.relation | Sensors and Actuators, B: Chemical | |
dc.relation | 1,406 | |
dc.rights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Electrochemical sensors | |
dc.subject | Gold nanoparticles | |
dc.subject | Langmuir-Blodgett film | |
dc.subject | Metallic ions detection | |
dc.subject | Organophilic montmorillonite clay | |
dc.subject | Polyaniline | |
dc.title | Incorporation of gold nanoparticles into Langmuir-Blodgett films of polyaniline and montmorillonite for enhanced detection of metallic ions | |
dc.type | Artículos de revistas | |