期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 18, 页码 5753-5756出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b13473
关键词
-
资金
- Major State Basic Research Development Program of China [2012CB215500]
- Natural Science Foundation of China [21222310, 21573183, 21361140374, 21321062]
Controlling the surface structure of Pt nanocrystals (NCs), especially creating high-index facets with abundant active step sites, is an effective approach to enhance catalytic performances. However, the available high-index faceted Pt NCs have large particle sizes, which severely impedes their practical applications. In this study, we reported a new electrochemically seed-mediated method, by which sub-10 nm tetrahexahedral Pt NCs (THH Pt NCs) enclosed with {210} high-index facets supported on graphene were synthesized. Pt nanoparticles of nm in size as high-density crystal seeds play a key role in the small-sized control. The obtained THH Pt NCs exhibited a higher mass activity than commercial Pt/C catalyst for ethanol electrooxidation. We further demonstrated that this method is also valid for reshaping commercial Pt/C, to create high-index facets on surfaces and thus to improve both mass activity and stability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据