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One-Pot Synthesis of Graphene Supported CuO Nanorods for the Electrochemical Hydrazine Sensor Applications

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Nanocomposites of cupric oxide (CuO) nanorods anchored on reduced graphene oxide (rGO/CuO) synthesized and applied as efficient catalysts in electrochemical hydrazine sensor applications. The simultaneous reduction of Cu2+ ions and GO were achieved through a single reducing agent citrate and the average diameter of anchored CuO nanorods was found to be 18 nm. The reduction of GO and formation of a complex of rGO with CuO were assessed on the basis of Raman and FT-IR spectroscopic techniques. The obtained diffraction patterns indicated a monoclinic structure for CuO nanorods which was not altered even after the anchoring process over rGO sheets. The electrocatalytic behavior of prepared nanostructures towards the oxidation of hydrazine was evaluated through cyclic voltammetry and amperometry techniques. The experimental results showed that the rGO/CuO composite exhibited a low detection limit of 9.8 nM, wide linear response range from 0.1 to 400 μM and a sensitivity of 3.87 μA/μM ยท cm2. Furthermore, the fabricated sensors exhibited constructive characteristics, such as excellent selectivity, good reproducibility and long durability, which suggested their viability in applications as hydrazine sensors.
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Keywords: ACTIVE SITES; DETECTION LIMIT; NANORODS; SELECTIVITY; SENSITIVITY

Document Type: Research Article

Publication date: February 1, 2015

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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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