Abstract Polycrystalline AgPd alloy nanowires were synthesized by potentiostatic electrodeposition in pores of anodic alumina oxide membranes from a bath containing ammonia complexes of silver and palladium. By adjusting the potential of the working electrode in a range from −0.4 to −1.2 V vs. SCE and electrolyte composition (Pd/Ag precursor ratio of 1:15 to 15:1), the morphology and composition of nanowires, and pore-filling rate can be tuned. Smooth nanowires (composed mainly of palladium) with the diameter of 56 ± 4 nm were prepared by electrodeposition carried out at the potentials less negative than −0.6 V vs. SCE in the electrolyte with the Pd/Ag precursor ratio of 15:1. The use of bath with the Pd/Ag precursor ratio of 1:15 led to the formation of rougher nanowires with a higher silver content (up to 100 wt%) and smaller diameter, which are prone to cracking due to their granular structure. The AgPd nanowire array with the Ag/Pd ratio (wt%) of ca. 1:1 was used for electrocatalytic reduction of trichloromethane in a 0.05 M aqueous solution of KClO4. The linear sweep voltammetry (LSV) revealed one wide peak of CHCl3 reduction that is shifted toward more negative values with increasing the scan rate.

中文翻译：

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用于电催化应用的 AgPd 纳米线阵列的可控合成和表征

摘要 多晶 AgPd 合金纳米线是通过在含有银和钯的氨络合物的浴液中在阳极氧化铝膜的孔中进行恒电位电沉积合成的。通过在 -0.4 到 -1.2 V 的范围内调整工作电极的电位，相对于 SCE 和电解质组成（Pd/Ag 前驱体的比例为 1:15 到 15:1），纳米线的形态和组成以及孔-填充率可以调整。直径为 56 ± 4 nm 的光滑纳米线（主要由钯组成）是通过在 Pd/Ag 前驱体比率为 15:1 的电解质中在低于 -0.6 V vs. SCE 的负电位下进行电沉积制备的。使用 Pd/Ag 前驱体比率为 1:15 的浴导致形成更粗糙的纳米线，具有更高的银含量（高达 100 wt%）和更小的直径，由于它们的颗粒结构，它们容易开裂。AgPd 纳米线阵列的 Ag/Pd 比率（wt%）约为 1:1 用于在 0.05 M KClO4 水溶液中电催化还原三氯甲烷。线性扫描伏安法 (LSV) 揭示了 CHCl3 还原的一个宽峰，随着扫描速率的增加，该峰向更多负值移动。