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Updated: Jun 10, 2026
08:25
Measuring Nitrite and Nitrate, Metabolites in the Nitric Oxide Pathway, in Biological Materials using the Chemiluminescence Method
Published on: December 25, 2016
Electrochemical determination of nitrite using silver nanoparticles modified electrode.
Manas Pal1, Vellaichamy Ganesan
1Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi, 221 005, UP, India.
The Analyst
|August 18, 2010
Summary
We developed silver nanoelectrode ensembles (Ag-NEEs) for sensitive nitrite detection. These Ag-NEEs, fabricated on glassy carbon, show efficient electrocatalytic oxidation of nitrite ions.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Developing novel nanomaterials for electrochemical sensing is crucial.
- Silver nanoparticles (Ag NPs) offer unique catalytic properties.
- Functionalized silica supports enhance nanoparticle stability and performance.
Purpose of the Study:
- To fabricate and characterize silver nanoelectrode ensembles (Ag-NEEs) on a glassy carbon electrode.
- To investigate the electrocatalytic oxidation of nitrite (NO2-) using the fabricated Ag-NEEs.
- To establish a sensitive method for nitrite determination.
Main Methods:
- Chemisorption of Ag NPs onto mercaptopropyl functionalized MCM-41 silica spheres.
- Characterization using UV-vis diffuse reflectance, X-ray powder diffraction, SEM, and TEM.
- Electrochemical determination of nitrite via its electrocatalytic oxidation.
Main Results:
- Successful anchoring of Ag NPs within the silica matrix was confirmed.
- Ag-NEEs exhibited well-defined surface morphology.
- Efficient electrocatalytic oxidation of nitrite was observed at the Ag-NEEs, enabling sensitive detection.
Conclusions:
- The fabricated Ag-NEEs are effective for the sensitive electrochemical determination of nitrite.
- The combination of functionalized silica and silver nanoparticles provides a robust sensing platform.
- This work demonstrates a promising approach for developing advanced electrochemical sensors.
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