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Synthesis, Characterization and Performance of a New Copper Complex as Electrocatalyst of Hydrogen Peroxide and Nitrite

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The present work reports on the synthesis, characterization and performance of a new copper(II) complex of [Cu4(C11H14N2)4Cl6O] as electrocatalyst for hydrogen peroxide and nitrite reduction. The structure of the complex was characterized by X-ray crystallography, IR spectroscopy and elemental analysis. The molecular structure contained four 1-butyl-1H-benzo[d]imidazole ligands and a core in which the copper atoms occupied the bridgehead positions, six chlorine atoms occupied the bridging sites, and one oxygen atom occupied the center position. The electrochemical behavior and electrocatalysis of the title complex bulk-modified carbon paste electrode (Cu-CPE) have been studied by cyclic voltammetry. The Cu-CPE shows good electrocatalytic activities toward the reduction of hydrogen peroxide and nitrite. The detection limit, linear calibration range and the sensitivity are 0.02 M, 0.03 to 0.25 M, 76.62 A M–1 for hydrogen peroxide detection, and 0.03 M, 0.05 to 0.25 M, 72.45 A M–1 for nitrite detection. This modified electrode has good reproducibility, high stability, low detection limit, technical simplicity and possibility of rapid preparation, which is important for practical application.
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Keywords: COPPER COMPLEX; ELECTROCATALYSIS; HYDROGEN PEROXIDE; NITRITE

Document Type: Research Article

Publication date: June 1, 2010

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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