Characterization of polymer stabilized silver nanoparticles modified Glassy Carbon electrodes for electroanalytical applications

•Silver nanoparticles modified Glassy Carbon electrodes are prepared with a very simple procedure.•Deposition onto the Glassy Carbon support of a suspension of Ag-NP in Nafion®.•Characterization by CV, EIS, SEM and EDS.•Modified electrodes show promising electroanalytical performances.•Preliminary a...

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Bibliographic Details
Published in:Electrochimica acta 2013-10, Vol.109, p.447-453
Main Authors: Pifferi, Valentina, Marona, Valeria, Longhi, Mariangela, Falciola, Luigi
Format: Article
Language:English
Subjects:
Arrays
Cyclic voltammetry
Deposition
Electrochemical impedance spectroscopy
Electrodes
Glassy carbon
Impedance spectroscopy
Modified electrode
Nafion
Nanomaterials
Nanoparticles
Scanning electron microscopy
Silver
Silver nanoparticles
Three dimensional
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Summary:•Silver nanoparticles modified Glassy Carbon electrodes are prepared with a very simple procedure.•Deposition onto the Glassy Carbon support of a suspension of Ag-NP in Nafion®.•Characterization by CV, EIS, SEM and EDS.•Modified electrodes show promising electroanalytical performances.•Preliminary applications for the detection of model halides are presented. Nafion® stabilized silver nanoparticles modified Glassy Carbon electrodes were prepared with a very simple procedure depositing onto the Glassy Carbon support a suspension of nanomaterials in Nafion®. Electrodes were characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Stability in air and in solution and repeatability were evaluated. The modified electrodes show promising electroanalytical performances due to the increase of the effective surface area, to a formation of a random array of nanoparticles on the Nafion® three-dimensional substrate with intermediate diffusional behaviour between planar and convergent, and to a very small double layer capacitance. Applications exploiting the electrocatalytic properties of Ag for the detection of two chlorinated compounds (dichloromethane and halothane) are presented.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.07.194