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Single-atom catalysis of CO oxidation using Pt-1/FeOx
Qiao, Botao1; Wang, Aiqin1; Yang, Xiaofeng2; Allard, Lawrence F.3; Jiang, Zheng4; Cui, Yitao5; Liu, Jingyue1,6,7; Li, Jun2; Zhang, Tao1
刊名NATURE CHEMISTRY
2011-08-01
DOI10.1038/NCHEM.1095
3期:8页:634-641
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]TRANSMISSION ELECTRON-MICROSCOPY ; LOW-TEMPERATURE OXIDATION ; PLATINUM CLUSTERS ; SELECTIVE OXIDATION ; GOLD NANOPARTICLES ; CARBON-MONOXIDE ; ACTIVE GOLD ; ADSORPTION ; SURFACES ; HYDROGEN
英文摘要Platinum-based heterogeneous catalysts are critical to many important commercial chemical processes, but their efficiency is extremely low on a per metal atom basis, because only the surface active-site atoms are used. Catalysts with single-atom dispersions are thus highly desirable to maximize atom efficiency, but making them is challenging. Here we report the synthesis of a single-atom catalyst that consists of only isolated single Pt atoms anchored to the surfaces of iron oxide nanocrystallites. This single-atom catalyst has extremely high atom efficiency and shows excellent stability and high activity for both CO oxidation and preferential oxidation of CO in H-2. Density functional theory calculations show that the high catalytic activity correlates with the partially vacant 5d orbitals of the positively charged, high-valent Pt atoms, which help to reduce both the CO adsorption energy and the activation barriers for CO oxidation.
语种英语
WOS记录号WOS:000292999100017
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142451
专题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.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
3.Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
5.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
6.Univ Missouri, Dept Phys & Astron, Ctr Nanosci, St Louis, MO 63121 USA
7.Univ Missouri, Dept Chem & Biochem, St Louis, MO 63121 USA
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Qiao, Botao,Wang, Aiqin,Yang, Xiaofeng,et al. Single-atom catalysis of CO oxidation using Pt-1/FeOx[J]. NATURE CHEMISTRY,2011,3(8):634-641.
APA Qiao, Botao.,Wang, Aiqin.,Yang, Xiaofeng.,Allard, Lawrence F..,Jiang, Zheng.,...&Zhang, Tao.(2011).Single-atom catalysis of CO oxidation using Pt-1/FeOx.NATURE CHEMISTRY,3(8),634-641.
MLA Qiao, Botao,et al."Single-atom catalysis of CO oxidation using Pt-1/FeOx".NATURE CHEMISTRY 3.8(2011):634-641.
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