Ligand effect of SnO2 on a Pt-Ru catalyst and the relationship between bond strength and CO tolerance

被引：18
作者：
Takeguchi, Tatsuya [1 ]
Kunifuji, Akane [2 ]
Narischat, Napan [1 ,2 ]
Ito, Mikio [3 ]
Noguchi, Hidenori [4 ,5 ]
Uosaki, Kohei [4 ,5 ]
Mukai, Shin R. [2 ]
机构：
[1] Iwate Univ, Fac Sci & Engn, Dept Chem & Biol Sci, Morioka, Iwate 0208551, Japan
[2] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido 0608628, Japan
[3] Tokyo Coll, Natl Inst Technol, Dept Chem Sci & Engn, 1220-2 Kunugida Machi, Hachioji, Tokyo 1930997, Japan
[4] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
[5] Natl Inst Mat Sci, Global Res Ctr Environm & Energy Based Nanomat Sc, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
来源：
CATALYSIS SCIENCE & TECHNOLOGY | 2016年 / 6卷 / 09期
关键词：
FUEL-CELL ELECTROCATALYSTS; RUTHENIUM AD-ATOMS; X-RAY-ABSORPTION; CARBON-MONOXIDE; H-2/CO MIXTURES; ELECTROCHEMICAL OXIDATION; ALLOY ELECTRODE; ANODE CATALYST; PLATINUM; ELECTROOXIDATION;
D O I：
10.1039/c5cy01523e
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：
Pt-Ru/SnO2/C catalysts were prepared by a rapid quenching method. The structure and morphology of Pt-Ru particles in Pt-Ru/SnO2/C are controlled to obtain the same Pt-Ru particle as that in a commercial Pt-Ru catalyst. The Pt-Ru/SnO2/C and commercial Pt-Ru catalysts were characterized by X-ray diffraction and scanning transmission electron microscopy. Electrochemical activities were evaluated by CO stripping voltammetry, single cell tests, in situ infrared reflection-absorption spectroscopy (IRRAS) and surface-enhanced infrared absorption spectroscopy (SEIRAS). The Pt-Ru/SnO2/C catalyst showed the same structure, morphology and catalytic activity for hydrogen oxidation reaction (HOR) in the absence of CO as those of a Pt-Ru/C catalyst. Both the activity for electrochemical CO oxidation and Pt-CO bond strength were quantitatively evaluated. The addition of SnO2 decreased the Pt-CO bond strength with maintained HOR activity to enhance CO tolerance.
引用
收藏
页码：3214 / 3219
页数：6
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