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  • Title: Reductive determination of hydrogen peroxide with MWCNTs-Pd nanoparticles on a modified glassy carbon electrode.
    Author: You JM, Jeong YN, Ahmed MS, Kim SK, Choi HC, Jeon S.
    Journal: Biosens Bioelectron; 2011 Jan 15; 26(5):2287-91. PubMed ID: 21030237.
    Abstract:
    This paper introduces the use of multi walled carbon nanotubes (MWCNTs) with palladium (Pd) nanoparticles in the electrocatalytic reduction of hydrogen peroxide (H(2)O(2)). We have developed and characterized a biosensor for H(2)O(2) based on Nafion(®) coated MWCNTs-Pd nanoparticles on a glassy carbon electrode (GCE). The Nafion(®)/MWCNTs-Pd/GCE electrode was easily prepared in a rapid and simple procedure, and its application improves sensitive determination of H(2)O(2). Characterization of the MWCNTs-Pd nanoparticle film was performed with transmission electron microscopy (TEM), Raman, and X-ray photoelectron spectroscopy (XPS). Cyclic voltammetry (CV) and amperometry (at an applied potential of -0.2V) measurements were used to study and optimize performance of the resulting peroxide biosensor. The proposed H(2)O(2) biosensor exhibited a wide linear range from 1.0 μM to 10 mM and a low detection limit of 0.3 μM (S/N=3), with a fast response time within 10s. Therefore, this biosensor could be a good candidate for H(2)O(2) analysis.
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