<i>In Situ</i> Metalorganic Deposition of Silver Nanoparticles on Gold Substrate and Square Wave Voltammetry: A Highly Efficient Combination for Nanomolar Detection of Nitrate Ions in Sea Water

<i>In Situ</i> Metalorganic Deposition of Silver Nanoparticles on Gold Substrate and Square Wave Voltammetry: A Highly Efficient Combination for Nanomolar Detection of Nitrate Ions in Sea Water

The electro-reduction of nitrate ions in artificial sea water was investigated at a gold substrate (E<sub>Au</sub>) functionalized by silver nanoparticles (AgNPs). These AgNPs were generated <i>in situ</i> on the gold substrate by the direct decomposition of the metalorganic...

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Bibliographic Details
Main Authors: Emilie Lebon, Pierre Fau, Maurice Comtat, Myrtil L. Kahn, Alix Sournia-Saquet, Pierre Temple-Boyer, Brigitte Dubreuil, Philippe Behra, Katia Fajerwerg
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Chemosensors
Subjects:
silver metalorganic precursor
silver nanoparticles
nitrate detection
square wave voltammetry
sea water
Online Access:https://www.mdpi.com/2227-9040/6/4/50
Description
Summary:The electro-reduction of nitrate ions in artificial sea water was investigated at a gold substrate (E<sub>Au</sub>) functionalized by silver nanoparticles (AgNPs). These AgNPs were generated <i>in situ</i> on the gold substrate by the direct decomposition of the metalorganic N,N&#8242;-diisopropylacetamidinate silver precursor [Ag(Amd)] in the liquid phase. Very small and well dispersed AgNPs were deposited on the gold electrode and then used as working electrode (E<sub>Au/AgNPs</sub>). Square wave voltammetry (SWV) was successfully employed to detect nitrate ions (NO<sub>3</sub><sup>&#8722;</sup>) with a detection limit (LOD) of 0.9 nmol∙L<sup>&#8722;1</sup> in artificial sea water (pH = 6.0) without pre-concentration or pH adjustment.
ISSN:2227-9040

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