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Talanta. 2010 Mar 15;80(5):1648-52. doi: 10.1016/j.talanta.2009.09.061. Epub 2009 Oct 7.

Non-enzymatic electrochemical CuO nanoflowers sensor for hydrogen peroxide detection.

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  • 1Research Center for Time-Domain Nano-Functional Devices, Korea University, Seoul 136-701, Republic of Korea.

Abstract

The electrocatalytic activity of a CuO flower-like nanostructured electrode was investigated in terms of its application to enzyme-less amperometric H(2)O(2) sensors. The CuO nanoflowers film was directly formed by chemical oxidation of copper foil under hydrothermal condition and then used as active electrode material of non-enzymatic electrochemical sensors for H(2)O(2) detection under alkaline conditions. The sensitivity of the sensor with CuO nanoflowers electrode was 88.4 microA/mM cm(2) with a linear response in the range from 4.25 x 10(-5) to 4 x 10(-2)M and a detection limit of 0.167 microM (S/N=3). Excellent electrocatalytic activity, large surface-to-volume ratio and efficient electron transport property of CuO nanoflowers electrode have enabled stable and highly sensitive performance for the non-enzymatic H(2)O(2) sensor.

Copyright (c) 2009 Elsevier B.V. All rights reserved.

PMID:
20152391
[PubMed - indexed for MEDLINE]
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