کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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868194 | 909803 | 2011 | 5 صفحه PDF | دانلود رایگان |
This paper introduces the use of multi walled carbon nanotubes (MWCNTs) with palladium (Pd) nanoparticles in the electrocatalytic reduction of hydrogen peroxide (H2O2). We have developed and characterized a biosensor for H2O2 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 H2O2. 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 −0.2 V) measurements were used to study and optimize performance of the resulting peroxide biosensor. The proposed H2O2 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 10 s. Therefore, this biosensor could be a good candidate for H2O2 analysis.
Journal: Biosensors and Bioelectronics - Volume 26, Issue 5, 15 January 2011, Pages 2287–2291