DICP OpenIR
Size-dependent surface reactions of Ag nanoparticles supported on highly oriented pyrolytic graphite
Zhang, Hui; Fu, Qiang; Yao, Yunxi; Zhang, Zhen; Ma, Teng; Tan, Dali; Bao, Xinhe
Source PublicationLANGMUIR
2008-10-07
DOI10.1021/la801348n
Volume24Issue:19Pages:10874-10878
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Materials Science
WOS KeywordCHARGE-TRANSFER PHOTODISSOCIATION ; CATALYTICALLY ACTIVE GOLD ; OXYGEN-ADSORPTION ; EPOXIDE FORMATION ; SILVER CATALYSTS ; ETHYLENE-OXIDE ; OXIDATION ; CLUSTERS ; AG(110) ; XPS
AbstractVarious sizes of Ag particles were grown on highly oriented pyrolytic graphite (HOPG) surfaces, which had previously been modified with nanopits to act as anchoring sites. Surface reactions of O-2, CHCl3, and CCl4 on the Ag particles and bulk Ag(111) surfaces were studied by X-ray photoelectron spectroscopy (XPS), and it has been shown that size dependence of O-2 and CHCl3 reactions on Ag differs from that of CCl4. Weak reactions of O-2 and CHCl3 were observed on the bulk Ag(111) surfaces, while strong reactions occur on Ag particles with medium Ag coverage, suggesting that the reactions are controlled by the number of surface defect sites. On the contrary, the dissociation of CCl4 is mainly determined by the exposed Ag facet area, mainly Ag(111) facet, and strong dissociation reaction happens on the bulk Ag(111) surface. The results suggest that the size effects, which are often discussed in heterogeneous catalysis, are strongly dependent on the reaction mechanism.
Language英语
WOS IDWOS:000259673500055
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141077
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Hui,Fu, Qiang,Yao, Yunxi,et al. Size-dependent surface reactions of Ag nanoparticles supported on highly oriented pyrolytic graphite[J]. LANGMUIR,2008,24(19):10874-10878.
APA Zhang, Hui.,Fu, Qiang.,Yao, Yunxi.,Zhang, Zhen.,Ma, Teng.,...&Bao, Xinhe.(2008).Size-dependent surface reactions of Ag nanoparticles supported on highly oriented pyrolytic graphite.LANGMUIR,24(19),10874-10878.
MLA Zhang, Hui,et al."Size-dependent surface reactions of Ag nanoparticles supported on highly oriented pyrolytic graphite".LANGMUIR 24.19(2008):10874-10878.
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