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Bimetallic nanodendrites via selective overgrowth of noble metals on multiply twinned Au seeds
Alternative TitleJ. Mater. Chem. A
Feng, Yan1,2; Liu, Hui1,2; Yang, Jun1
2014
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume2Issue:17Pages:6130-6137
AbstractMastery over the morphology of nanomaterials usually enables control of their properties and enhancement of their usefulness for a given application. Herein, we present a general approach, which is based on the preferential nucleation and growth of noble metals on the active twins of Au seed particles, for the fabrication of bimetallic Au-noble metal nanoparticles with dendritic morphologies. This strategy involves the synthesis of multiply twinned Au seeds and the subsequent reduction of other noble metal precursors in oleylamine at elevated temperature. In comparison with commercial Pt/C catalysts, the bimetallic Au-Pt nanodendrites display superior catalytic activity towards methanol oxidation due to the electronic interaction between the Au core and Pt branches in dendritic bimetallic particles and the abundant atomic steps, edges, and corner atoms in the Pt branches. The synthetic universality and mechanistic understanding may provide new opportunities to design and fabricate heterogeneous nanostructures with interesting physicochemical properties.; Mastery over the morphology of nanomaterials usually enables control of their properties and enhancement of their usefulness for a given application. Herein, we present a general approach, which is based on the preferential nucleation and growth of noble metals on the active twins of Au seed particles, for the fabrication of bimetallic Au-noble metal nanoparticles with dendritic morphologies. This strategy involves the synthesis of multiply twinned Au seeds and the subsequent reduction of other noble metal precursors in oleylamine at elevated temperature. In comparison with commercial Pt/C catalysts, the bimetallic Au-Pt nanodendrites display superior catalytic activity towards methanol oxidation due to the electronic interaction between the Au core and Pt branches in dendritic bimetallic particles and the abundant atomic steps, edges, and corner atoms in the Pt branches. The synthetic universality and mechanistic understanding may provide new opportunities to design and fabricate heterogeneous nanostructures with interesting physicochemical properties.
KeywordReduction Electrocatalytic Property Oxygen-reduction Nanocrystals Nanoparticles Growth Silver Gold Heteronanostructures Palladium Oxidation
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c3ta14121g
URL查看原文
Indexed BySCI
Language英语
WOS KeywordREDUCTION ELECTROCATALYTIC PROPERTY ; OXYGEN-REDUCTION ; NANOCRYSTALS ; NANOPARTICLES ; GROWTH ; SILVER ; GOLD ; HETERONANOSTRUCTURES ; PALLADIUM ; OXIDATION
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000333580700022
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8037
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Feng, Yan,Liu, Hui,Yang, Jun. Bimetallic nanodendrites via selective overgrowth of noble metals on multiply twinned Au seeds[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(17):6130-6137.
APA Feng, Yan,Liu, Hui,&Yang, Jun.(2014).Bimetallic nanodendrites via selective overgrowth of noble metals on multiply twinned Au seeds.JOURNAL OF MATERIALS CHEMISTRY A,2(17),6130-6137.
MLA Feng, Yan,et al."Bimetallic nanodendrites via selective overgrowth of noble metals on multiply twinned Au seeds".JOURNAL OF MATERIALS CHEMISTRY A 2.17(2014):6130-6137.
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