Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis

	Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis
	Fu, Qiang 1; Yao, Yunxi 1; Guo, Xiaoguang 1; Wei, Mingming 1; Ning, Yanxiao 1; Liu, Hongyang 1,2; Yang, Fan 1; Liu, Zhi 3; Bao, Xinhe 1
刊名	physical chemistry chemical physics
	2013
卷号	15 期号:35 页码:14708-14714
通讯作者	傅强 ; 包信和
产权排序	待补充
合作状况	英
英文摘要	understanding dynamic changes of catalytically active nanostructures under reaction conditions is a pivotal challenge in catalysis research, which has been extensively addressed in metal nanoparticles but is less explored in supported oxide nanocatalysts. here, structural changes of iron oxide (feox) nanostructures supported on pt in a gaseous environment were examined by scanning tunneling microscopy, ambient pressure x-ray photoelectron spectroscopy, and in situ x-ray absorption spectroscopy using both model systems and real catalysts. o-fe (feo) bilayer nanostructures can be stabilized on pt surfaces in reductive environments such as vacuum conditions and h-2-rich reaction gas, which are highly active for low temperature co oxidation. in contrast, exposure to h-2-free oxidative gases produces a less active o-fe-o (feo2) trilayer structure. reversible transformation between the feo bilayer and feo2 trilayer structures can be achieved under alternating reduction and oxidation conditions, leading to oscillation in the catalytic oxidation performance.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical ; physics, atomic, molecular & chemical
研究领域[WOS]	chemistry ; physics
关键词[WOS]	temperature co oxidation ; oxide-films ; photoelectron-spectroscopy ; ferrous centers ; pt(111) surface ; in-situ ; nanoparticles ; chemistry ; au(111) ; growth
收录类别	SCI
资助信息	1，1
原文出处	14714
语种	英语
WOS记录号	WOS:000323196800018
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119185]
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
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Fu, Qiang,Yao, Yunxi,Guo, Xiaoguang,et al. Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis[J]. physical chemistry chemical physics,2013,15(35):14708-14714.
APA	Fu, Qiang.,Yao, Yunxi.,Guo, Xiaoguang.,Wei, Mingming.,Ning, Yanxiao.,...&Bao, Xinhe.(2013).Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis.physical chemistry chemical physics,15(35),14708-14714.
MLA	Fu, Qiang,et al."Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis".physical chemistry chemical physics 15.35(2013):14708-14714.