Growth and structures of monolayer and bilayer CeOx nanostructures on Au (111)

doi:10.1016/j.susc.2018.08.017

	Growth and structures of monolayer and bilayer CeOx nanostructures on Au (111)
	Fan, Yang 2; Bao Xinhe 2; Yi, Zhang 1,2
刊名	SURFACE SCIENCE
	2019
卷号	679 页码:31-36
关键词	CeOx nanostructures Au(111) Scanning tunneling microscopy Monolayer Bilayer O vacancy
ISSN号	0039-6028
DOI	10.1016/j.susc.2018.08.017
通讯作者	Fan, Yang(fyang@dicp.ac.cn)
英文摘要	The construction of well-defined Ceo(x)/Au(111) model catalysts is key to the understanding of ceria-based catalysts or the Au-CeOx interface in catalytic reactions. Conventionally, owing to the Volmer-Weber growth of ceria on Au(111), ceria nanostructures with controlled layer thickness and well-defined structure have been difficult to grow on Au(111). We explored the influence of growth parameters, such as the substrate temperature for ceria deposition, the flux of Ce atoms and the annealing temperature in this study. We found that ceria prefers to form bilayer nanostructures, i.e. two O-Ce-O layers, over a large range of growth conditions, whereas monolayer ceria nanostructures could also be obtained on Au(111) with the careful control of growth kinetics. Upon the growth of these well-defined ceria nanostructures, element-specific STM images could also be achieved on their surfaces, which allow the identification of surface and sub-surface O vacancies on ceria. The construction and atomic-scale characterization of these CeOx/Au(111) model catalysts would facilitate the subsequent studies on their surface chemistry and aid our understanding on the catalysis by ceria nanostructures.
资助项目	Ministry of Science and Technology of China[2017YFB0602205] ; Ministry of Science and Technology of China[2016YFA0202803] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17020200] ; National Science Foundation of China[21473191] ; National Science Foundation of China[91545204] ; Thousand Talents Program for Young Scientists
WOS关键词	FILMS ; CERIA ; NANOPARTICLES
WOS研究方向	Chemistry ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000455063000006
资助机构	Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Thousand Talents Program for Young Scientists ; Thousand Talents Program for Young Scientists ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Thousand Talents Program for Young Scientists ; Thousand Talents Program for Young Scientists ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Thousand Talents Program for Young Scientists ; Thousand Talents Program for Young Scientists ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Thousand Talents Program for Young Scientists ; Thousand Talents Program for Young Scientists
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166322]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Fan, Yang
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Fan, Yang,Bao Xinhe,Yi, Zhang. Growth and structures of monolayer and bilayer CeOx nanostructures on Au (111)[J]. SURFACE SCIENCE,2019,679:31-36.
APA	Fan, Yang,Bao Xinhe,&Yi, Zhang.(2019).Growth and structures of monolayer and bilayer CeOx nanostructures on Au (111).SURFACE SCIENCE,679,31-36.
MLA	Fan, Yang,et al."Growth and structures of monolayer and bilayer CeOx nanostructures on Au (111)".SURFACE SCIENCE 679(2019):31-36.