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Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles
Chen, Dong1,2; Liu, Hui1; Cui, Penglei1; Li, Chengyin1,2; Ye, Feng1; Yang, Jun1
2015
Source PublicationCRYSTENGCOMM
ISSN1466-8033
Volume17Issue:32Pages:6155-6162
AbstractUnderstanding the mechanism for the production of composite dimers, which often exhibit new properties not present in their individual components due to the electron transfer across the nanometer contact at the interface, is undoubtedly important. Herein, with the assistance of a small amount of [AD] PO4, an organic soluble ionic liquid, core-shell Ag@Ag-Pd nanoparticles with an average size of 28.2 nm are successfully prepared, which serve as templates for the subsequent synthesis of dimeric nanocomposites consisting of Ag2S and hollow structured Pd nanoparticles (Ag2S-hPd) by converting the Ag component in the core-shell particles into Ag2S with elemental sulfur. Specifically, the large size of the core-shell nanoparticles allow us to observe clearly the ripening of Ag2S to a single site on the surface of the remnant hollow structured Pd nanoparticles, which elucidates the mechanism accounting for the formation of Ag2S-hPd composite dimers instead of core-shell nanostructures with a hollow Pd core and a continuous Ag2S shell, although the transformation from Ag to Ag2S occurred uniformly on the surface of the remnant hollow Pd particles. Electrochemical measurements demonstrate that the dimeric Ag2S-hPd nanocomposites display better electrocatalytic behavior for formic acid oxidation than commercial Pd/C catalysts due to the strong electronic coupling between the semiconductor and noble metal domains in the nanocomposites.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5ce00775e
Indexed BySCI
Language英语
WOS KeywordFORMIC-ACID ; AU-FE3O4 NANOPARTICLES ; METAL NANOPARTICLES ; OXYGEN REDUCTION ; BIMETALLIC HETERONANOSTRUCTURES ; PALLADIUM NANOPARTICLES ; ENHANCED CATALYSIS ; OPTICAL-PROPERTIES ; SELECTIVE GROWTH ; SILVER SULFIDE
WOS Research AreaChemistry ; Crystallography
WOS SubjectChemistry, Multidisciplinary ; Crystallography
WOS IDWOS:000358915300012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19433
Collection多相复杂系统国家重点实验室
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
Chen, Dong,Liu, Hui,Cui, Penglei,et al. Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles[J]. CRYSTENGCOMM,2015,17(32):6155-6162.
APA Chen, Dong,Liu, Hui,Cui, Penglei,Li, Chengyin,Ye, Feng,&Yang, Jun.(2015).Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles.CRYSTENGCOMM,17(32),6155-6162.
MLA Chen, Dong,et al."Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles".CRYSTENGCOMM 17.32(2015):6155-6162.
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