Ag nanoparticles decorated Fe3O4/chitosan nanocomposite: synthesis, characterization and application toward electrochemical sensing of hydrogen peroxide

We studied a rapid, sensitive and selective amperometric sensor for determination of hydrogen peroxide by electrodeposited Ag NPs on a modified glassy carbon electrode (GCE). The modified GCE was constructed through a step by step modification of magnetic chitosan functional composite (Fe 3 O 4 –CH)...

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Bibliographic Details
Published in:Journal of the Iranian Chemical Society 2018-05, Vol.15 (5), p.1015-1022
Main Authors: Baghayeri, Mehdi, Veisi, Hojat, Farhadi, Samaneh, Beitollahi, Hadi, Maleki, Behrooz
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biochemistry
Chemical synthesis
Chemistry
Chemistry and Materials Science
Chitosan
Electrical measurement
Electrochemical analysis
Electrodes
Fourier transforms
Glassy carbon
Hydrogen peroxide
Infrared analysis
Inorganic Chemistry
Iron oxides
Nanocomposites
Nanoparticles
Organic Chemistry
Original Paper
Physical Chemistry
Scanning electron microscopy
Sensors
Silver
Transmission electron microscopy
X-ray diffraction
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Summary:We studied a rapid, sensitive and selective amperometric sensor for determination of hydrogen peroxide by electrodeposited Ag NPs on a modified glassy carbon electrode (GCE). The modified GCE was constructed through a step by step modification of magnetic chitosan functional composite (Fe 3 O 4 –CH) and high-dispersed silver nanoparticles on the surface. The resulted Ag@Fe 3 O 4 –CH was characterized by various analytical methods including Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and cyclic voltammetry. The proposed sensor employed Ag@Fe 3 O 4 –CH/GCE as the working electrode with a linear current response to the hydrogen peroxide concentration in a wide range from 0.01 to 400 µM with a low limit of detection (LOD = 0.0038 µM, S / N  = 3). The proposed sensor showed superior reproductivity, sensitivity and selectivity for the detection of hydrogen peroxide in environmental and clinical samples.
ISSN:1735-207X
1735-2428
DOI:10.1007/s13738-018-1298-y