Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7691505 | Arabian Journal of Chemistry | 2018 | 7 Pages |
Abstract
In this paper, we demonstrate a promising method to fabricate a non-enzymatic stable, highly sensitive and selective hydrogen peroxide sensor based on a chitosan/silver nanoparticles (CS/AgNPs) hybrid. Using this composite, we elaborated both electrochemical and colorimetric sensors for hydrogen peroxide detection. The colorimetric sensor is based on a homogenous reaction which fades the color of CS/AgNPs solutions from red-orange to colorless depending on hydrogen peroxide concentration. For the electrochemical sensor, CS/AgNPs were immobilized on glassy carbon electrodes and hydrogen peroxide was measured using cyclic voltammetry, square wave voltammetry and electrochemical impedance spectroscopy. The response time is less than 10 s and the detection limit is 5 μM.
Keywords
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Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Hoang V. Tran, Chinh D. Huynh, Hanh V. Tran, Benoit Piro,