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首页> 外文期刊>Electrocatalysis >Preparation of Pd-Modified Ni Foam Electrodes and Their Use as Anodes for the Oxidation of Alcohols in Basic Media
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Preparation of Pd-Modified Ni Foam Electrodes and Their Use as Anodes for the Oxidation of Alcohols in Basic Media

机译：Pd修饰的Ni泡沫电极的制备及其在碱性介质中作为醇氧化的阳极

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Pd-modified Ni foam electrodes were prepared by a spontaneous deposition method. Ni foam samples were immersed in acid PdCl2 solutions for different durations (t SD). The Pd loading and the surface area of the Pd deposits were determined as a function of [PdCl2] and t SD. SEM–EDX showed that Pd deposits were homogeneously formed on the walls of both the outer and the inner cells of the Ni foam. Pd-modified Ni foam electrodes were used as anodes for the oxidation of methanol, ethanol, ethylene glycol, and glycerol in basic media. Voltammetric curves for the oxidation of alcohols showed that the peak current increased with increasing Pd loading in a sub-linear way. For the lowest loading explored (ca. 1 mg of Pd in a 1 cm3 foam volume), the peak current per unit Pd mass was of the order of 650 A g−1 for 0.5 M methanol and ethanol, ca. 1,500 A g−1 for glycerol and higher than 2,000 A g−1 for ethylene glycol.
机译：通过自发沉积法制备Pd改性的Ni泡沫电极。将镍泡沫样品浸入酸性PdCl2 溶液中，持续不同的持续时间（t SD ）。确定Pd的负载量和Pd沉积物的表面积是[PdCl2 ]和t SD 的函数。 SEM-EDX结果表明，Pd沉积物均匀地形成在泡沫镍的内部和外部壁上。 Pd修饰的Ni泡沫电极用作阳极，用于在碱性介质中氧化甲醇，乙醇，乙二醇和甘油。醇氧化的伏安曲线表明，峰值电流随着Pd负载的增加以亚线性方式增加。对于探索的最低负载（在1 cm3的泡沫体积中约1 mg的Pd），对于0.5 M的甲醇和10 mg的Pd，每单位Pd质量的峰值电流约为650 A g-1。乙醇，约。甘油为1,500 A g-1 ，乙二醇为2,000 A g-1 。

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