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A sensitive nonenzymatic hydrogen peroxide sensor based on Fe3O4–Fe2O3 nanocomposites

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Abstract

The Fe3O4–Fe2O3 nanocomposites were prepared by the co-precipitation method and followed by calcination process. The products were synthesized and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray analysis. The obtained Fe3O4–Fe2O3 nanocomposites were then applied to study the electrocatalytic reduction of hydrogen peroxide (H2O2) in 0.01 M pH 7.0 phosphate buffer medium. Then the Fe3O4–Fe2O3 nanocomposites were used as active electrode material of electrochemical sensors for H2O2 detection The detection sensitivity of the sensor was 20.325 μA mM −1, and the detection limit was estimated to be about 0.2 mM.

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Authors and Affiliations

  1. Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing, 163318, PR China

    GUANG SHENG CAO, PEILONG WANG, XIN LI, YUE WANG, GUILONG WANG & JUNPING LI

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  1. GUANG SHENG CAO
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  2. PEILONG WANG
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  3. XIN LI
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  4. YUE WANG
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  5. GUILONG WANG
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  6. JUNPING LI
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Correspondence to GUANG SHENG CAO.

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CAO, G.S., WANG, P., LI, X. et al. A sensitive nonenzymatic hydrogen peroxide sensor based on Fe3O4–Fe2O3 nanocomposites. Bull Mater Sci 38, 163–167 (2015). https://doi.org/10.1007/s12034-014-0803-x

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  • DOI: https://doi.org/10.1007/s12034-014-0803-x

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