The electrochemiluminescence (ECL) performances were comparatively investigated at flat and nanoporous gold (NPG) electrodes of different thicknesses (120 and 200 nm) and roughness factors (fr). The phenomena were studied using either tripropylamine (TPrA) or peroxydisulfate (S2O82-) as sacrificial coreactant and Ruthenium (II)- tris(2,2'-bipyridine) as emitting species. The experiments performed using TPrA showed, at first glance, a linear dependence of the ECL emission with respect to the effective surface area of the NPG electrodes. However, ECL signals were not stable in the measuring conditions, presumably due to amine absorption on the metal surface, leading to electrode corrosion and modification of the surface morphology. The experiments made using peroxydisulfate as coreactant provided conversely a stable ECL response, about proportional to the effective electrode surface area, in the considered range of thicknesses. (C) 2018 Elsevier Ltd. All rights reserved.

Coreactant electrochemiluminescence at nanoporous gold electrodes / Villani, E; Valenti, G; Marcaccio, M; Mattarozzi, L; Barison, S; Villani, E; Valenti, G; Marcaccio, M; Mattarozzi, L; Barison, S; Garoli, D; Cattarin, S; Paolucci, F; Garoli, D; Cattarin, S; Paolucci, F. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 277:(2018), pp. 168-175. [10.1016/j.electacta.2018.04.215]

Coreactant electrochemiluminescence at nanoporous gold electrodes

Garoli D;Garoli D;
2018

Abstract

The electrochemiluminescence (ECL) performances were comparatively investigated at flat and nanoporous gold (NPG) electrodes of different thicknesses (120 and 200 nm) and roughness factors (fr). The phenomena were studied using either tripropylamine (TPrA) or peroxydisulfate (S2O82-) as sacrificial coreactant and Ruthenium (II)- tris(2,2'-bipyridine) as emitting species. The experiments performed using TPrA showed, at first glance, a linear dependence of the ECL emission with respect to the effective surface area of the NPG electrodes. However, ECL signals were not stable in the measuring conditions, presumably due to amine absorption on the metal surface, leading to electrode corrosion and modification of the surface morphology. The experiments made using peroxydisulfate as coreactant provided conversely a stable ECL response, about proportional to the effective electrode surface area, in the considered range of thicknesses. (C) 2018 Elsevier Ltd. All rights reserved.
2018
277
168
175
Coreactant electrochemiluminescence at nanoporous gold electrodes / Villani, E; Valenti, G; Marcaccio, M; Mattarozzi, L; Barison, S; Villani, E; Valenti, G; Marcaccio, M; Mattarozzi, L; Barison, S; Garoli, D; Cattarin, S; Paolucci, F; Garoli, D; Cattarin, S; Paolucci, F. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 277:(2018), pp. 168-175. [10.1016/j.electacta.2018.04.215]
Villani, E; Valenti, G; Marcaccio, M; Mattarozzi, L; Barison, S; Villani, E; Valenti, G; Marcaccio, M; Mattarozzi, L; Barison, S; Garoli, D; Cattarin, S; Paolucci, F; Garoli, D; Cattarin, S; Paolucci, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1316016
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