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首页> 外文期刊>Electroanalysis >Highly Active Nickel Nanoparticles Supported on TiO_2 Nanotube Electrodes for Methanol Electrooxidation
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Highly Active Nickel Nanoparticles Supported on TiO_2 Nanotube Electrodes for Methanol Electrooxidation

机译：TiO_2纳米管电极上负载的高活性镍纳米粒子用于甲醇电氧化

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摘要

Nickel nanoparticles/TiO_2 nanotubes/Ti electrodes were prepared by galvanic deposition of nickel nanoparticles on the TiO_2 nanotubes layer on titanium substrates. Titanium oxide nanotubes were fabricated by anodizing titanium foil in a DMSO fluoride-containing electrolyte. The morphology and surface characteristics of titanium dioxide nanotubes and Ni/TiO_2/Ti electrodes were investigated using scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. The results indicated that nickel nanoparticles were homogeneously deposited on the surface of TiO_2 nanotubes. The electrocatalytic behaviour of nickel nanoparticles/TiO_2/Ti electrodes for the methanol electrooxidation was studied by electrochemical impedance spectroscopy, cyclic voltammetry, differential pulse voltammetry and chronoamperometry methods. The results showed that Ni/TiO_2/Ti electrodes exhibit a considerably higher electrocatalytic activity toward the oxidation of methanol.
机译：镍纳米颗粒/ TiO_2纳米管/ Ti电极是通过将镍纳米颗粒电沉积在钛基板上的TiO_2纳米管层上制备的。通过在含DMSO氟化物的电解质中对钛箔进行阳极氧化来制造氧化钛纳米管。分别用扫描电子显微镜和能量色散X射线光谱法研究了二氧化钛纳米管和Ni / TiO_2 / Ti电极的形貌和表面特性。结果表明，镍纳米颗粒均匀沉积在TiO_2纳米管的表面。通过电化学阻抗谱，循环伏安法，微分脉冲伏安法和计时安培法研究了镍纳米粒子/ TiO_2 / Ti电极对甲醇电氧化的电催化行为。结果表明，Ni / TiO_2 / Ti电极对甲醇的氧化具有较高的电催化活性。

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