Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 734, Issue -, Pages 25-30Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2014.09.033
Keywords
Nitrogen-doped graphene; Copper nanoparticles; Nitenpyram; Electrochemical sensor
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Funding
- National Natural Science Foundation of China [31271620, 21375050, 21305052, 21205051, 21205050]
- Natural Science Foundation of Jiangsu province [BK2012285, BK20130498]
- Natural Science Foundation of Education Department of Jiangsu Province [13KJB210004]
- China Postdoctoral Science Foundation [2012M511217, 2012M511218]
- Scientific Research Foundation of Jiangsu University [12JDG041]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [PAPD]
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In this work, a novel electrochemical sensing platform has been designed for sensitive determination of nitenpyram on the basis of copper nanoparticles functionalized nitrogen-doped graphene (Cu NPs/N-G) nanocomposites. The Cu NPs/N-G nanocomposites have exhibited high electrocatalytic activity and satisfactory response toward the oxidation of nitenpyram in Britton-Robinson solution, attributing to the synergistic effect of Cu NPs and N-G. The resulting sensor exhibited high sensitivity of 1011 mu A mM(-1) cm(-2) for nitenpyram detection with a wide linear range from 5 mu M to 1.11 mM as well as low detection limit of 2.0 mu M at signal-to-noise of 3. Moreover, the Cu NPs/N-G nanocomposites showed excellent selectivity and remarkable stability for the oxidation of nitenpyram. The proposed sensor has been successfully applied to the determination of nitenpyram in river water samples with satisfactory results. This can take new opportunities for fast, simple and selective detection of nitenpyram and provide a promising platform for sensor designs for nitenpyram detection. (C) 2014 Elsevier B.V. All rights reserved.
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