Carbon supported Pd–Ni–P nanoalloy as an efficient catalyst for ethanol electro-oxidation in alkaline media
Carbon supported Pd–Ni–P nanoalloy as an efficient catalyst for ethanol electro-oxidation in alkaline media
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DOI：
10.1016/j.jpowsour.2013.06.021
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发表时间：
2013-10
影响因子：
9.2
通讯作者：
Ye Wang;Feifei Shi;Yao-Yue Yang;W. Cai
中科院分区：
文献类型：
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作者：
Ye Wang;Feifei Shi;Yao-Yue Yang;W. Cai
以次亚磷酸钠为还原剂，P源和柠檬酸钠为络合剂，在含Pd（II）和Ni（II）盐的简单水浴中合成了碳负载的分散良好的Pd - Ni - P三元乙醇氧化反应催化剂。对制备的Pd - Ni - P/C的XRD分析表明，Ni收缩而P扩展Pd晶格结构，XPS测量表明两种合金元素对Pd的电子效应不同。循环伏安法和计时安培法表明，Pd - ni - p /C的电催化活性明显高于Pd/C、Pd - p /C和Pd - ni /C催化剂。这可能是由于这种三元纳米合金具有独特的电子、几何和双功能效应。
Carbon-supported well-dispersed Pd–Ni–P ternary catalyst targeted for ethanol oxidation reaction (EOR) in alkaline media is synthesized in a simple aqueous bath containing Pd(II) and Ni(II) salts with sodium hypophosphite as the reducing agent and the source for P and sodium citrate as the complexing agent. XRD analysis on the as-prepared Pd–Ni–P/C reveals that Ni shrinks while P expands the Pd lattice structure, and XPS measurement suggests different electronic effects of the two alloying elements on Pd. Cyclic voltammetry and chronoamperometry indicate that the Pd–Ni–P/C presents a remarkably higher electrocatalytic activity than the state-of-the-art Pd/C, Pd–P/C and Pd–Ni/C catalysts. This may be ascribed to the unique electronic, geometric and bifunctional effects involved in this ternary nanoalloy.