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题名: Aqueous-Phase Synthesis of Sub 10 nm Pd-core@Pt-shell Nanocatalysts for Oxygen Reduction Reaction Using Amphiphilic Triblock Copolymers as the Reductant and Capping Agent
作者: Zhang, Geng1, 2;  Shao, Zhi-Gang1;  Lu, Wangting1, 2;  Xiao, Hui1, 2;  Xie, Feng1;  Qin, Xiaoping1;  Li, Jin1, 2;  Liu, Fuqiang3;  Yi, Baolian1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2013-07-04
DOI: 10.1021/jp401375b
卷: 117, 期:26, 页:13413-13423
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Sub 10 nm Pd-core@Pt-shell nanocrystals (NCs) were prepared by a facile and green reduction method in aqueous solutions using commercially available and nontoxic poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) amphiphilic triblock copolymers as the reductant, stabilizer, and capping agent. The growth mode and morphology of the Pt shell on the Pd surface can be adjusted simply by the Pt/Pd molar ratio. The activity of carbon-supported Pd@Pt NCs toward oxygen reduction reaction exhibited a Pt shell morphology dependence, with Pd-2@Pt-1 (Pt/Pd molar ratio 1/2) having the highest mass activity and Pd-1@Pt-2 (Pt/Pd molar ratio 2/1) having the best area-specific activity, and both of them were significantly enhanced in comparison with that of commercial Pt/C catalysts Moreover, single-fuel-cell testing indicated superior activity and durability of Pd-2@Pt-1 NCs, which made Pd-2@Pt-1 NCs promising cathode catalysts for fuel cell applications.
关键词[WOS]: PLATINUM-MONOLAYER SHELL ;  SHAPE-CONTROLLED SYNTHESIS ;  ELECTROCATALYTIC ACTIVITY ;  BIMETALLIC NANODENDRITES ;  METHANOL OXIDATION ;  CATALYTIC-ACTIVITY ;  PARTICLE-SIZE ;  FUEL-CELLS ;  NANOPARTICLES ;  NANOCRYSTALS
语种: 英语
WOS记录号: WOS:000321542000010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137858
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Res Grp, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Univ Texas Arlington, Dept Mat Sci & Engn, Electrochem Energy Lab, Arlington, TX 76019 USA

Recommended Citation:
Zhang, Geng,Shao, Zhi-Gang,Lu, Wangting,et al. Aqueous-Phase Synthesis of Sub 10 nm Pd-core@Pt-shell Nanocatalysts for Oxygen Reduction Reaction Using Amphiphilic Triblock Copolymers as the Reductant and Capping Agent[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(26):13413-13423.
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