Journal
ANALYTICAL METHODS
Volume 6, Issue 4, Pages 1114-1120Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ay41914b
Keywords
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Funding
- National Natural Science Foundation of China [61271059]
- Natural Science Foundation Project of Chongqing [2010BB4246]
- Science and Technology Development Project of Chongqing [CSTC2012gg-yyjs90007]
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In this article, Cu2O/Cu NC nanocomposite catalysts on glass carbon electrodes have been synthesized by electrochemical deposition at -0.2 V versus silver/silver chloride and used to construct an electrochemical sensor for detection of hydrogen peroxide. The effects of deposition time and pH were investigated in detail. In 0.1 M phosphate buffer saline (PBS, pH = 6.5), the Cu2O/Cu NC modified electrode exhibits a wide linear dependence (R = 0.996) at a concentration of H2O2 from 4.0 x 10(-7) M to 1.0 x 10(-2) M, a high sensitivity of 870.4 mu A mM(-1) cm(-2) and a detection limit of 2.0 x 10(-7) M. Additionally, the sensor was applied for the determination of H2O2 in milk, showing its potential for practical applications.
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