An Original Nitrate Sensor Based On Silver Nanoparticles Electrodeposited On A Gold Electrode

K. Fajerwerg V. Ynam B. Chaudret V. Garcon 1 D. Thouron 1 M. Comtat
1 DYNBIO LEGOS
LEGOS - Laboratoire d'études en Géophysique et océanographie spatiales
Abstract : The electroreduction of nitrate in synthetic seawater was investigated by cyclic voltammetry (CV) at a bare gold electrode modified by electrodeposited silver nanoparticles (AgNPs). The AgNPs were generated by chronoamperometry using a charge. Q lower than the theoretical one corresponding to a silver monolayer. In these conditions, a linear range for nitrate determination is obtained from 10.10(-6) mol L(-1) to 10-10(-3) mol L(-1). Such a low limit of detection was achieved due to the combination of two chemical reactions coupled with electron transfer. (C) 2010 Elsevier B.V. All rights reserved.
Keywords : Silver electrodeposition Gold electrode Nitrate detection Electrocatalysis COPPER MODIFIED ELECTRODE HYDROGEN-PEROXIDE PEROXYNITROUS ACID NITRITE REDUCTION ELECTROREDUCTION DECOMPOSITION SIZE
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https://hal.archives-ouvertes.fr/hal-00998627
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Submitted on : Monday, June 2, 2014 - 2:33:35 PM
Last modification on : Friday, January 10, 2020 - 9:09:55 PM

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K. Fajerwerg, V. Ynam, B. Chaudret, V. Garcon, D. Thouron, et al.. An Original Nitrate Sensor Based On Silver Nanoparticles Electrodeposited On A Gold Electrode. Electrochemistry Communications, Elsevier, 2010, 12 (10), pp.1439-1441. ⟨10.1016/j.elecom.2010.08.003⟩. ⟨hal-00998627⟩

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