A novel nonenzymatic hydrogen peroxide sensor based on the synthesized mesoporous carbon and silver nanoparticles nanohybrid

Schematic representation of H2O2 electroreduction on the MC/AgNPs/GCE and corresponding cyclic voltammogram. •The MC/AgNPs nanohybrid was synthesized by a green and low-cost synthesis process.•The MC/AgNPs/GCE nanohybrid was used to fabricate H2O2 electrochemical sensor.•The MC/AgNPs/GCE sensor has...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 203; pp. 919 - 925
Main Authors Habibi, Biuck, Jahanbakhshi, Mojtaba
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2014
Subjects
Hydrogen peroxide
Mesoporous carbon
Nanohybrid
Nonenzymatic sensor
Silver nanoparticles
Nonenzymatic sensor
Nanohybrid
Hydrogen peroxide
Mesoporous carbon
Silver nanoparticles
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Summary:Schematic representation of H2O2 electroreduction on the MC/AgNPs/GCE and corresponding cyclic voltammogram. •The MC/AgNPs nanohybrid was synthesized by a green and low-cost synthesis process.•The MC/AgNPs/GCE nanohybrid was used to fabricate H2O2 electrochemical sensor.•The MC/AgNPs/GCE sensor has low detection limit and wide linear responding range.•The MC/AgNPs sensor has very high sensitivity to H2O2. Here, we report the synthesis and characterization of a novel nanohybrid composed of mesoporous carbon and silver nanoparticles (MC/AgNPs) to use in amperometric sensing of hydrogen peroxide (H2O2). In this process, the MC was synthesized by using the mesoporous silica as a template and glucose as a carbon source. The AgNPs were produced by in situ chemical reduction of silver nitrate through glucose as a reducing and stabilizing agent in the presence of MC to give the desired MC/AgNPs nanohybrid. It was investigated by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and electrochemical measurements. The obtained nanohybrid was used to modify a glassy carbon electrode and to fabricate an amperometric sensor for H2O2 determination at a working potential of −200mV vs. silver/silver chloride electrode in aqueous 0.1M phosphate buffer solution (pH 7.0). The resulted sensor can detect H2O2 in the concentration range of 0.1–41μM with a detection of limit 50nM at a signal-to-noise ratio of 3.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2014.06.096