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Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation
Alternative TitleRSC Adv.
Ye, Feng1; Yang, Jinhua2; Hu, Weiwei1; Liu, Hui1; Liao, Shijun3; Zeng, Jianhuang3; Yang, Jun1,2
2012
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume2Issue:19Pages:7479-7486
AbstractMastery over the structure and/or composition of metal nanoparticles is an effective way to improve their catalytic activity on a mass basis. Herein, we report a facile solution route for the assembly of hollow Pt nanospheres (hPt) and ultrafine Ru nanoparticles based on electrostatic interactions. In this approach, negatively charged hollow Pt nanospheres with an average size of 12 nm and positively charged ultrafine Ru nanoparticles with an average size of 0.9 nm are first prepared, followed by the successful fabrication of hPt-Ru assemblies upon mixing the particles with opposite charges. The hPt-Ru assemblies at a Pt/Ru molar ratio of 2 : 1 exhibit superior catalytic activity toward methanol oxidation in direct methanol fuel cells for the presence of a mixed-phase containing Pt and an effective oxophilic metal, and a smaller dilution effect on the Pt surface induced by Ru in the assemblies. This study offers a vivid example to demonstrate the integration of a second oxophilic metal into the active Pt catalyst capable of enhancing its catalytic properties by means of a physical construction.; Mastery over the structure and/or composition of metal nanoparticles is an effective way to improve their catalytic activity on a mass basis. Herein, we report a facile solution route for the assembly of hollow Pt nanospheres (hPt) and ultrafine Ru nanoparticles based on electrostatic interactions. In this approach, negatively charged hollow Pt nanospheres with an average size of 12 nm and positively charged ultrafine Ru nanoparticles with an average size of 0.9 nm are first prepared, followed by the successful fabrication of hPt-Ru assemblies upon mixing the particles with opposite charges. The hPt-Ru assemblies at a Pt/Ru molar ratio of 2 : 1 exhibit superior catalytic activity toward methanol oxidation in direct methanol fuel cells for the presence of a mixed-phase containing Pt and an effective oxophilic metal, and a smaller dilution effect on the Pt surface induced by Ru in the assemblies. This study offers a vivid example to demonstrate the integration of a second oxophilic metal into the active Pt catalyst capable of enhancing its catalytic properties by means of a physical construction.
KeywordHydrous Ruthenium Oxide Fuel-cell Oxygen Reduction Phase-transfer Alloy Nanoparticles Au Nanoparticles Facile Synthesis Metal-ions Ad-atoms Platinum
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c2ra21140h
URL查看原文
Indexed BySCI
Language英语
WOS KeywordHYDROUS RUTHENIUM OXIDE ; FUEL-CELL ; OXYGEN REDUCTION ; PHASE-TRANSFER ; ALLOY NANOPARTICLES ; AU NANOPARTICLES ; FACILE SYNTHESIS ; METAL-IONS ; AD-ATOMS ; PLATINUM
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000307185300022
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6321
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.The Nanos, Inst Bioengn & Nanotechnol, Singapore 138669, Singapore
3.S China Univ Technol, Sch Chem & Chem Engn, Guangdong Key Lab Fuel Cell Technol, Guangzhou 510641, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Ye, Feng,Yang, Jinhua,Hu, Weiwei,et al. Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation[J]. RSC ADVANCES,2012,2(19):7479-7486.
APA Ye, Feng.,Yang, Jinhua.,Hu, Weiwei.,Liu, Hui.,Liao, Shijun.,...&Yang, Jun.(2012).Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation.RSC ADVANCES,2(19),7479-7486.
MLA Ye, Feng,et al."Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation".RSC ADVANCES 2.19(2012):7479-7486.
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