Journal ArticleDOI
Cu nanoparticles supported mesoporous polyaniline and its applications towards non-enzymatic sensing of glucose and electrocatalytic oxidation of methanol
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TLDR
In this paper, a mesoporous polyaniline (Cu/Meso-PANI) based non-enzymatic electrochemical sensor was fabricated for glucose detection.Abstract:
Cu nanoparticles supported on mesoporous polyaniline (Cu/Meso-PANI) was synthesized by the self assembly of dual surfactants followed by the in-situ reduction of CuCl2 in aqueous solution. Materials were characterized by X-ray diffraction, Scanning electron microscopy, Transmission electron microscopy, and UV-visible spectroscopic method. Cu/Meso-PANI based non-enzymatic electrochemical sensor was fabricated for glucose detection. The Cu/Meso-PANI modified electrode showed high electrocatalytic activity towards the oxidation of glucose compared to Cu/PANI (Cu nanoparticles supported on conventional polyaniline), which is due the highly dispersed copper in the high surface area Meso-PANI matrix. The Cu/Meso-PANI modified electrode exhibited high selectivity towards glucose against several common interfering species. Cu/Meso-PANI modified electrode was also explored for the electrochemical oxidation of methanol, which finds application in direct methanol fuel cell. The electrochemical oxidation of methanol was investigated at the surface of Cu/Meso-PANI modified electrode in alkaline medium using cyclic voltammetry and chronoamperometry methods. Various reaction parameters such as effect of scan rate and concentration of methanol were investigated. Furthermore, the rate constant (k) for the electrocatalytic oxidation of methanol was also calculated. The promising electrocatalytic activity of Cu/Meso-PANI modified electrode provides a new platform for the fabrication of polyaniline based high-performance sensors.read more
Citations
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Simultaneous detection of guanine, adenine, thymine, and cytosine at polyaniline/MnO2 modified electrode
TL;DR: The PANI/MnO2 nanocomposite was synthesized by the reaction of polyaniline (PANI) and KMnO4 in the aqueous medium, which enabled simultaneous voltammetric determination of all four DNA bases at physiological condition (pH 7).
Journal ArticleDOI
Mesoporous Materials-Based Electrochemical Sensors
TL;DR: In this paper, a review of the use of template-based ordered mesoporous materials for designing electrochemical sensors is given, and the main detection schemes developed in the field are (volt)amperometric sensing subsequent to preconcentration and electrocatalytic detection.
Journal ArticleDOI
Flexible paper sensor fabricated via in situ growth of Cu nanoflower on RGO sheets towards amperometrically non-enzymatic detection of glucose
TL;DR: A flexible free-standing paper sensor was fabricated for the first time via in situ growth of Cu nanoflower on reduced graphene oxide (RGO) sheets towards amperometrically nonenzymatic detection of glucose.
Journal ArticleDOI
Copper nanoparticles/polyaniline/graphene composite as a highly sensitive electrochemical glucose sensor
TL;DR: In this article, a non-enzymatic glucose sensor based on polyaniline (PANI)/graphene nanocomposite was fabricated via simple in-situ reduction of Cu precursor in polyanile nanofibers under mild conditions followed by mechanical mixing with graphene suspension to form the composites with different graphene contents (0.5, 1, and 2%).
Journal ArticleDOI
Facile preparation of Ni(OH)2-MnO2 hybrid material and its application in the electrocatalytic oxidation of hydrazine.
TL;DR: The Ni(OH)2-MnO2 modified electrode exhibited good sensitivity, stability, and reproducibility in hydrazine sensing and was optimized to obtain the best peak potential and current sensitivity.
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Journal ArticleDOI
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TL;DR: In this article, the use of Ni as a catalyst for the electro-oxidation of methanol in alkaline medium was studied by cyclic voltammetry and it was found that only Ni dispersed on graphite shows a catalytic activity towards methanoline oxidation but massive Ni does not.