CO Adsorption Behavior on Decorated Pt@Au Nanoelectrocatalysts: A Combined Experimental and DFT Theoretical Calculation Study

被引：21
|
作者：
Yu, Yaolun [1 ]
Lim, Kok Hwa [1 ]
Wang, Jing Yuan [2 ]
Wang, Xin [1 ]
机构：
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Chem & Biomol Engn, Singapore 637459, Singapore
[2] Nanyang Technol Univ, Residues & Resource Reclamat Ctr, Singapore 637459, Singapore
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 05期
基金：
新加坡国家研究基金会;
关键词：
SHELL NANOPARTICLE ELECTROCATALYSTS; TOTAL-ENERGY CALCULATIONS; TEMPERATURE FUEL-CELLS; FORMIC-ACID OXIDATION; WAVE BASIS-SET; UNDERPOTENTIAL DEPOSITION; ELECTRONIC-STRUCTURE; REDOX REPLACEMENT; CARBON-MONOXIDE; ALLOY SURFACES;
D O I：
10.1021/jp210851b
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
CO stripping experiments were carried out on a series of submonolayer decorated Pt@Au/C electrocatalysts with different Pt surface coverages which were synthesized by the Cu underpotential deposition (UPD)-Pt redox replacement technique. Combined with density functional theory calculations, the correlation between the CO adsorption strength and surface morphology of the catalyst is well illustrated. Results showed that whether the surface Pt atom could form a PtPt surface ensemble with another neighboring Pt atom is critical, which determines CO adsorption and oxidation behaviors on the electrocatalyst.
引用
收藏
页码：3851 / 3856
页数：6
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