Direct evidence for active site-dependent formic acid electro-oxidation by topmost-surface atomic redistribution in a ternary PtPdCu electrocatalyst

被引:20
作者
Cui, Chun-Hua [1 ]
Li, Hui-Hui [1 ]
Cong, Huai-Ping [1 ]
Yu, Shu-Hong [1 ]
Tao, Franklin [2 ]
机构
[1] Univ Sci & Technol China, CAS Key Lab Mech Behav & Design Mat, Hefei Natl Lab Phys Sci Microscale, Natl Synchrotron Radiat Lab,Dept Chem,Div Nanomat, Hefei 230026, Peoples R China
[2] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA
基金
中国国家自然科学基金; 对外科技合作项目(国际科技项目);
关键词
OXYGEN REDUCTION; BIMETALLIC SURFACES; PD; NANOPARTICLES; CATALYSTS; MONOLAYER; OXIDATION; EFFICIENT; ALLOY; ENVIRONMENTS;
D O I
10.1039/c2cc35822k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The active site-dependent electrochemical formic acid oxidation was evidenced by the increased coverage of Pt in the topmost mixed PtPd alloy layer of ternary PtPdCu upon potential cycling, which demonstrated two catalytic pathways only in one catalyst owing to surface atomic redistribution in an acidic electrolyte environment.
引用
收藏
页码:12062 / 12064
页数:3
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