Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 多相复杂系统国家重点实验室

	Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles
	Chen, Dong 1,2; Liu, Hui 1; Cui, Penglei 1; Li, Chengyin 1,2; Ye, Feng 1; Yang, Jun 1
刊名	CRYSTENGCOMM
	2015
卷号	17 期号:32 页码:6155-6162
ISSN号	1466-8033
英文摘要	Understanding 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary ; Crystallography
研究领域[WOS]	Chemistry ; Crystallography
关键词[WOS]	FORMIC-ACID ; AU-FE3O4 NANOPARTICLES ; METAL NANOPARTICLES ; OXYGEN REDUCTION ; BIMETALLIC HETERONANOSTRUCTURES ; PALLADIUM NANOPARTICLES ; ENHANCED CATALYSIS ; OPTICAL-PROPERTIES ; SELECTIVE GROWTH ; SILVER SULFIDE
收录类别	SCI
语种	英语
WOS记录号	WOS:000358915300012
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19433]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.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
推荐引用方式 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.