In this work, a series of three dimensions nanoporous Pd/MxOy ([Formula: see text], Ti, Co, Ni) composites are directly prepared by a simple dealloying method, their electrocatalytic performances are investigated. The structure analysis results show that the pores size of the composites is distinctly reduced, and their specific surface area is obviously increased compared with the nanoporous Pd when adding MxOy. As an anode catalyst, these three-dimensional (3D) nanoporous Pd/MxOy composites exhibit remarkable electrocatalytic performance (activity and stability) than that of the nanoporous Pd for ethanol electrooxidation, the order of the performance is as follows: Pd/NiO [Formula: see text] Pd/Co2O3 s [Formula: see text] Pd/TiO2 s [Formula: see text] Pd/ZrO[Formula: see text] Pd. Among the composites, the nanoporous Pd/NiO composite shows the best performance, which is approximately 3.6 times that of the single nanoporous Pd. The performance improvement of the composites for the ethanol oxidation is attributed to the structure optimization, interfacial electronic effect and dual functional mechanism between Pd and MxOy.

中文翻译：

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MxOy(M = Zr, Ti, Co, Ni) 对 3D 纳米多孔 Pd 乙醇电氧化的促进作用

在这项工作中，一系列三维纳米多孔 Pd/MX○是的（[公式：见正文]，Ti，Co，Ni）复合材料通过简单的脱合金方法直接制备，对其电催化性能进行了研究。结构分析结果表明，与纳米多孔Pd相比，添加M时复合材料的孔径明显减小，比表面积明显增加。X○是的. 作为阳极催化剂，这些三维 (3D) 纳米多孔 Pd/MX○是的复合材料对乙醇电氧化的电催化性能（活性和稳定性）比纳米多孔 Pd 显着，性能排序如下： Pd/NiO [分子式：见正文] Pd/Co2○3s [公式：见正文] Pd/TiO2s [公式：见正文] Pd/ZrO[公式：见正文] Pd。在复合材料中，纳米多孔 Pd/NiO 复合材料表现出最好的性能，约为单一纳米多孔 Pd 的 3.6 倍。复合材料乙醇氧化性能的提高归因于结构优化、界面电子效应和 Pd 和 M 之间的双功能机制X○是的.