Surface and Subsurface Structures of the Pt-Fe Surface Alloy on Pt(111)

doi:10.1021/acs.jpcc.9b01626

	Surface and Subsurface Structures of the Pt-Fe Surface Alloy on Pt(111)
	Chen, Hao 2,4; Wang, Rui 3; Huang, Rong 3; Zhao, Changbao 3; Li, Yangsheng 2,4; Gong, Zhongmiao 3; Yao, Yunxi 1; Cui, Yi 3; Yang, Fan 2; Bao, Xinhe 2
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2019-07-18
卷号	123 期号:28 页码:17225-17231
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.9b01626
通讯作者	Cui, Yi(ycui2015@sinano.ac.cn) ; Yang, Fan(fyang@dicp.ac.cn)
英文摘要	Pt-Fe bimetallic alloys are important model catalysts for a number of catalytic reactions. Combining scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS), we have studied the structures of Pt-Fe surface alloys prepared on Pt(111) under a variety of conditions. Although the surface and subsurface structures of the Pt-Fe surface alloy could be varied with the deposition amount of Fe atoms and the annealing temperature, a characteristic alloy surface with a bright striped pattern could be identified, which consists of a Pt-dominant surface layer with a small percentage of Fe atoms in the form of isolated atoms or clusters in the surface lattice and a subsurface layer with an ordered Pt3Fe alloy structure. The bright stripes observed in STM were surface dislocations caused by stress relaxation owing to the lattice mismatch between the surface and subsurface layers. This characteristic alloy surface could be prepared on Pt(111) by depositing sub-monolayer Fe at similar to 460 K to facilitate Fe diffusion in the near surface region, or annealing multilayer Fe at similar to 700 K, to enhance bulk diffusion of Fe atoms. The synthesis of this Pt-Fe alloy surface with well-defined structures could allow for further model catalytic studies.
资助项目	Ministry of Science and Technology of China[2017YFB0602205] ; Ministry of Science and Technology of China[2016YFA0202803] ; Ministry of Science and Technology of China[2017YFA0303104] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17020200] ; National Science Foundation of China[91545204]
WOS关键词	ULTRATHIN FE ; FILMS ; SEGREGATION ; ADSORPTION ; OXIDATION ; CO ; RECONSTRUCTION ; PT3NI(111) ; CU(100)
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000476693800018
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 ; 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 ; 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 ; 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
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173937]
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	Cui, Yi; Yang, Fan
作者单位	1.China Acad Engn Phys, Inst Mat, Mianyang 621907, Sichuan, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Vacuum Interconnected Nanotech Workstn, 398 Ruoshui Rd, Suzhou 215123, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hao,Wang, Rui,Huang, Rong,et al. Surface and Subsurface Structures of the Pt-Fe Surface Alloy on Pt(111)[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(28):17225-17231.
APA	Chen, Hao.,Wang, Rui.,Huang, Rong.,Zhao, Changbao.,Li, Yangsheng.,...&Bao, Xinhe.(2019).Surface and Subsurface Structures of the Pt-Fe Surface Alloy on Pt(111).JOURNAL OF PHYSICAL CHEMISTRY C,123(28),17225-17231.
MLA	Chen, Hao,et al."Surface and Subsurface Structures of the Pt-Fe Surface Alloy on Pt(111)".JOURNAL OF PHYSICAL CHEMISTRY C 123.28(2019):17225-17231.