Synthesis of carbon-supported PtRh random alloy nanoparticles using electron beam irradiation reduction method

被引：8
|
作者：
Matsuura, Yoshiyuki [1 ]
Seino, Satoshi [1 ]
Okazaki, Tomohisa [1 ]
Akita, Tomoki [2 ]
Nakagawa, Takashi [1 ]
Yamamoto, Takao A. [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan
[2] Natl Inst Adv Ind Sci & Technol, Res Inst Electrochem Energy, 1-8-31 Midorigaoka, Ikeda, Osaka 5638577, Japan
来源：
RADIATION PHYSICS AND CHEMISTRY | 2016年 / 122卷
关键词：
Nanoparticle; Electron beam; Platinum; Rhodium; Random alloy; ETHANOL OXIDATION; BIMETALLIC CATALYSTS; METHANOL; RHODIUM; BINARY; RH; SN;
D O I：
10.1016/j.radphyschem.2016.01.005
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：
Bimetallic nanoparticle catalysts of PtRh supported on carbon were synthesized using an electron beam irradiation reduction method. The PtRh nanoparticle catalysts were composed of particles 2-3 nm in size, which were well dispersed on the surface of the carbon support nanoparticles. Analyses of X-ray diffraction and scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy revealed that the PtRh nanoparticles have a randomly alloyed structure. The lattice constant of the PtRh nano particles showed good correlation with Vegard's law. These results are explained by the radiochemical formation process of the PtRh nanoparticles. Catalytic activities of PtRh/C nanoparticles for ethanol oxidation reaction were found to be higher than those obtained with Pt/C. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：9 / 14
页数：6
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