Porous cubic-like PtCu and PtCuRu nanocrystals, which had a similar porous three-dimensional structure, were successfully prepared via the one-pot method. During the growth of the nanocrystals, cetyltrimethylammonium chloride and ascorbic acid were employed as the structure director and assistant reducing agent, respectively. The structure and possible formation of the nanocrystals were investigated. It is worth mentioning that the PtCuRu nanocrystals demonstrated a much better methanol electro-oxidation ability and ultrahigh stability, which displayed 3.4- and 3-fold higher specific and mass activity, respectively, than the commercial Pt/C. The advantage of PtCuRu nanocrystals was possibly ascribed to the synergistic effect of Cu and the porous structure and, more importantly, the presence of Ru that could more efficiently eliminate the harmful intermediates.

中文翻译：

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具有高活性和对甲醇电氧化稳定的立方状PtCuRu纳米晶体。

通过一锅法成功地制备了具有相似的多孔三维结构的多孔立方状PtCu和PtCuRu纳米晶体。在纳米晶体的生长过程中，分别使用十六烷基三甲基氯化铵和抗坏血酸作为结构导向剂和辅助还原剂。研究了纳米晶体的结构和可能的形成。值得一提的是，PtCuRu纳米晶体表现出更好的甲醇电氧化能力和超高稳定性，比市售Pt / C分别具有3.4和3倍的比活度和质量活度。PtCuRu纳米晶体的优势可能归因于Cu与多孔结构的协同效应，更重要的是，