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题名: Highly Active Small Palladium Clusters Supported on Ferric Hydroxide for Carbon Monoxide-Tolerant Hydrogen Oxidation
作者: Qiao, Botao1, 2;  Lin, Jian1;  Li, Lin1;  Wang, Aiqin1;  Liu, Jingyue1, 2;  Zhang, Tao1
关键词: nanoparticles ;  hydrogen ;  CO-tolerant ;  oxidation ;  palladium
刊名: CHEMCATCHEM
发表日期: 2014-02-01
DOI: 10.1002/cctc.201300947
卷: 6, 期:2, 页:547-554
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Proton-exchange membrane fuel cells have been regarded as one of the most promising candidates for efficient energy conversion. However, the CO poisoning of the anode and the scarcity of the Pt metal are two major barriers to their commercialization. Development of CO-tolerant Pd electrocatalysts is considered to be a plausible approach to overcome these problems. Herein we report that for the CO-tolerant H-2 oxidation, sub-2-nm size Pd clusters as well as single atoms, supported on FeOx nanocrystallites, are highly active and durable at a wide temperature range of 20-120 degrees C. Experimental data demonstrated that CO preferentially adsorbs on these small Pd clusters or single atoms linearly, resulting in weakened CO binding and enhanced H-2 competitive adsorption. Therefore, FeOx-supported small Pd clusters or single atoms provide a higher CO-tolerant performance. This finding may offer a new strategy to develop CO-tolerant Pd-based electrodes.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  CO OXIDATION ;  PREFERENTIAL OXIDATION ;  ANODE ELECTROCATALYSTS ;  PD NANOPARTICLES ;  ADSORPTION ;  CATALYSTS ;  H-2 ;  SPECTROSCOPY ;  ACTIVATION
语种: 英语
WOS记录号: WOS:000337637100020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143220
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

Recommended Citation:
Qiao, Botao,Lin, Jian,Li, Lin,et al. Highly Active Small Palladium Clusters Supported on Ferric Hydroxide for Carbon Monoxide-Tolerant Hydrogen Oxidation[J]. CHEMCATCHEM,2014,6(2):547-554.
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