Nafion®stabilized silver nanoparticles modified Glassy Carbon electrodes were prepared with a verysimple 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 inair and in solution and repeatability were evaluated.The modified electrodes show promising electroanalytical performances due to the increase of theeffective surface area, to a formation of a random array of nanoparticles on the Nafion ®three-dimensionalsubstrate with intermediate diffusional behaviour between planar and convergent, and to a very smalldouble layer capacitance. Applications exploiting the electrocatalytic properties of Ag for the detectionof two chlorinated compounds (dichloromethane and halothane) are presented.

Characterization of polymer stabilized silver nanoparticles modified glassy carbon electrodes for electroanalytical applications / V. Pifferi, V. Marona, M. Longhi, L. Falciola. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 109(2013), pp. 447-453. [10.1016/j.electacta.2013.07.194]

Characterization of polymer stabilized silver nanoparticles modified glassy carbon electrodes for electroanalytical applications

V. Pifferi
;
M. Longhi
Penultimo
;
L. Falciola
Ultimo
2013

Abstract

Nafion®stabilized silver nanoparticles modified Glassy Carbon electrodes were prepared with a verysimple 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 inair and in solution and repeatability were evaluated.The modified electrodes show promising electroanalytical performances due to the increase of theeffective surface area, to a formation of a random array of nanoparticles on the Nafion ®three-dimensionalsubstrate with intermediate diffusional behaviour between planar and convergent, and to a very smalldouble layer capacitance. Applications exploiting the electrocatalytic properties of Ag for the detectionof two chlorinated compounds (dichloromethane and halothane) are presented.
Silver nanoparticles; Nafion (R); Modified electrode; Cyclic voltammetry; Impedance spectroscopy
Settore CHIM/01 - Chimica Analitica
Settore CHIM/02 - Chimica Fisica
2013
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/232377
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