Facile fabrication of novel PdRu nanoflowers as highly active catalysts for the electrooxidation of methanol.
Facile fabrication of novel PdRu nanoflowers as highly active catalysts for the electrooxidation of methanol.
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DOI：
10.1016/j.jcis.2017.05.067
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发表时间：
2017-11
影响因子：
9.9
通讯作者：
Hui Xu;B. Yan;Ke-Qin Zhang;Jin Wang;Shumin Li;Caiqin Wang;Y. Shiraishi;Yukou Du;Ping Yang
中科院分区：
文献类型：
--
作者：
Hui Xu;B. Yan;Ke-Qin Zhang;Jin Wang;Shumin Li;Caiqin Wang;Y. Shiraishi;Yukou Du;Ping Yang
具有丰富表面活性区域和可调原子比的二元Pd基纳米晶的形状控制合成在优异电催化剂的制备和改性方面具有重要意义。为了更好地体现高比表面积在强化电催化方面的优势，上级电催化剂应兼具形态优势和金属间协同效应的联合收割机。我们在此报告了我们在工程设计具有高度暴露的活性位点和可调组合物的独特二元PdRu纳米花方面的重大进展。由于Pd和Ru之间的双功能效应和电子效应以及独特的花状结构，这种特殊的PdRu纳米花对甲醇电氧化表现出非常优异的催化活性，质量活性为1280 mA mg−1，比纯Pd和商品Pd/C分别提高了7.01和4.92倍。我们的工作可能为通过构建具有理想形状和最大化活性表面积的催化剂来提高催化活性开辟一条新的途径。
The shape-controlled synthesis of binary Pd-based nanocrystals bounded with abundant surface active areas and tunable atomic ratio have been of great significance in the fabrication and modification of outstandingly excellent electrocatalysts. To embody the superiority of high surface area in enhancing electrocatalysis well, the superior electrocatalyst should be supposed to combine both the morphology advantages and the synergistic effect between metals. We herein report our significant advances in engineering the unique binary PdRu nanoflowers with highly exposed active sites and tunable compositions. Owing to the bifuntional effect and electronic effect between Pd and Ru, as well as the unique flower-like structure, such special PdRu nanoflower exhibit outstandingly excellent catalytic activity towards methanol electrooxidation with the mass activity of 1280 mA mg−1, 7.01 and 4.92-fold enhancement than that of pure Pd and commercial Pd/C. Our efforts in this work may open a new way for enhancing the catalytic activity by constructing the catalysts with desirable shape and maximizing the active surface areas.