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CuO nanofibers immobilized on paraffin-impregnated graphite electrode and its application in the amperometric detection of glucose

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CuO nanofibers immobilized on paraffin-impregnated graphite electrode and its application in the amperometric detection of glucose

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Título CuO nanofibers immobilized on paraffin-impregnated graphite electrode and its application in the amperometric detection of glucose
Autor Simon, Ícaro Ariel
Medeiros, Natália Goedtel
Garcia, Ketlin Correia
Soares, Rosane Michele Duarte
Rosa, Aline Tais da
Silva, Jacqueline Arguello da
Abstract 1-D nanostructures are promising materials for development of electrochemical devices offering benefits such as fast electron transfer rates and large surface areas. Copper oxide nanofibers (CuONFs) synthesized by electrospinning technique and subsequent thermal treatment, were used to modify paraffin-impregnated graphite electrode (PIGE) for a sensitive non-enzymatic glucose detection. The structure and morphology of CuO-NFs were characterized by scanning electron microscopy and transmission electron microscopy. The electrocatalytic activity towards glucose oxidation was evaluated by cyclic voltammetry and chronoamperometry. The results reveal a wide linear response to glucose ranging from 1.0 × 10-6 to 1.93 × 10-3 mol L-1 (R2 = 0.9927). The limit of detection was 0.39 × 10-6 mol L-1 (LOD = 3σ/s). The high aspect ratio of the nanofibers arranged in a three-dimensional network structure significantly enhances the electron transfer process. The electrode preparation is simple and rapid execution, and more importantly the graphite rod is relative low-cost and easy to achieve surface renewal for reusability.
Contido em Journal of the Brazilian Chemical Society. São Paulo. Vol. 26, no. 8 (Aug. 2015), p. 1710-1717
Assunto Amperometria
Eletrocatálise
Eletrodos de grafita
Eletrofiação
Glicose
Nanofibras
Óxido de cobre
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/140129
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