Enhanced nonenzymatic hydrogen peroxide sensing with reduced graphene oxide/ferroferric oxide nanocomposites

► Reduced graphene oxide/Fe3O4 nanocomposites as sensing material for H2O2 detection. ► Reduced graphene oxide prevents the Fe3O4 nanoparticles from aggregation. ► The nanocomposites show enhanced electrocatalytic performance. A nonenzymatic hydrogen peroxide (H2O2) sensor was fabricated using the r...

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Bibliographic Details
Published in:Talanta (Oxford) 2012-01, Vol.89, p.417-421
Main Authors: Ye, Yiping, Kong, Tao, Yu, Xiaofang, Wu, Yukun, Zhang, Kun, Wang, Xiaoping
Format: Article
Language:English
Subjects:
Analytical chemistry
Animals
Biosensing Techniques - instrumentation
Biosensing Techniques - methods
Catalysis
Cattle
Chemistry
Coprecipitation
Detection
Electrochemistry
Electrodes
Exact sciences and technology
Ferroferric oxide
Ferrosoferric Oxide - chemistry
Fetus
General, instrumentation
Graphene
Graphite - chemistry
Hydrogen peroxide
Hydrogen Peroxide - blood
Hydrogen peroxide sensor
Limit of Detection
Microscopy, Electron, Transmission
Nanocomposite
Nanocomposites
Nanoparticles
Nonenzymatic
Oxidation-Reduction
Oxides
Reduced graphene oxide
Reproducibility of Results
Sensors
X-Ray Diffraction
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Summary:► Reduced graphene oxide/Fe3O4 nanocomposites as sensing material for H2O2 detection. ► Reduced graphene oxide prevents the Fe3O4 nanoparticles from aggregation. ► The nanocomposites show enhanced electrocatalytic performance. A nonenzymatic hydrogen peroxide (H2O2) sensor was fabricated using the reduced graphene oxide (RGO) and ferroferric oxide (Fe3O4) nanocomposites as the sensing material. The nanocomposites were synthesized by coprecipitation method and characterized by high-resolution transmission electron microscopy and X-ray diffraction. Results showed that the RGO sheet was evenly decorated by the well-crystallized Fe3O4 nanoparticles. The nanocomposites showed enhanced catalytic ability to the reduction of hydrogen peroxide compared with the RGO, Fe3O4 nanoparticles alone and the mixture materials. The sensor has a quite wide linear range from 0.1mM to 6mM (R2=0.990) with less than 5s response time. Moreover, its detection limit is 3.2μM (S/N=3). The anti-interference ability, long-term stability and potential application in real samples of the sensor is also assessed. This work expands the application of the graphene-based nanomaterials in the sensor areas.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2011.12.054