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学科主题物理化学
Reversible structural transformation of FeOx nanostructures on Pt under cycling redox conditions and its effect on oxidation catalysis
Fu, Qiang1; Yao, Yunxi1; Guo, Xiaoguang1; Wei, Mingming1; Ning, Yanxiao1; Liu, Hongyang1,2; Yang, Fan1; Liu, Zhi3; Bao, Xinhe1; Fu Q(傅强); Bao XH(包信和)
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2013
DOI10.1039/c3cp52587b
15期:35页:14708-14714
收录类别SCI
合作性质
文章类型Article
部门归属5
项目归属502
产权排名待补充
WOS标题词Science & Technology ; Physical Sciences
资助者1,1 ; 1,1 ; 1,1 ; 1,1
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
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.
语种英语
资助者1,1 ; 1,1 ; 1,1 ; 1,1
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WOS记录号WOS:000323196800018
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被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/119185
专题中国科学院大连化学物理研究所
通讯作者Fu Q(傅强); Bao XH(包信和)
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
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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.,...&包信和.(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.
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