Issue 10, 2010
From the journal:

Analyst

Electrochemical determination of nitrite using silver nanoparticles modified electrode†

Manas Pala  and  Vellaichamy Ganesan*a  

* Corresponding authors

a Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi, UP, India
E-mail: velganesh@yahoo.com, velgan@bhu.ac.in
Fax: + 91-542-2368127
Tel: + 91-542-2307321

Abstract

In this work, we report the fabrication and characterization of silver nanoelectrode ensembles (Ag-NEEs) on a glassy carbon electrode. For this purpose, Ag nanoparticles (NPs) were anchored to the mercaptopropyl functionalized MCM-41 type silica spheres utilizing the chemisorption property of Ag NPs by –SH groups. The successful anchoring of Ag NPs into the silica matrix is characterized by several techniques including UV-vis diffuse reflectance and X-ray powder diffraction methods. The surface morphology of the Ag-NEEs was assessed by scanning and transmission electron microscopy (SEM and TEM respectively). Further, nitrite (NO2−) is electrocatalytically oxidized at Ag-NEEs, which leads to a sensitive determination of NO2−. The fabrication, characterization, and efficient sensing of NO2− at the Ag-NEEs are presented.

Graphical abstract: Electrochemical determination of nitrite using silver nanoparticles modified electrode

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Article information

DOI
https://doi.org/10.1039/C0AN00289E
Article type
Paper
Submitted
05 May 2010
Accepted
08 Jul 2010
First published
12 Aug 2010

Analyst, 2010,135, 2711-2716

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Electrochemical determination of nitrite using silver nanoparticles modified electrode

M. Pal and V. Ganesan, Analyst, 2010, 135, 2711 DOI: 10.1039/C0AN00289E

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