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Ultrastable single-atom gold catalysts with strong covalent metal-support interaction (CMSI)
Qiao, Botao1,2; Liang, Jin-Xia3,4,5; Wang, Aiqin2; Xu, Cong-Qiao3,4; Li, Jun3,4; Zhang, Tao2; Liu, Jingyue (Jimmy)1
KeywordSingle-atom Catalysis Gold Catalyst Co Oxidation Covalent Metal-support Interaction
Source PublicationNANO RESEARCH
2015-09-01
DOI10.1007/s12274-015-0796-9
Volume8Issue:9Pages:2913-2924
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordGAS SHIFT REACTION ; LOW-TEMPERATURE OXIDATION ; AUGMENTED-WAVE METHOD ; CO OXIDATION ; CHEMOSELECTIVE HYDROGENATION ; HETEROGENEOUS CATALYSIS ; CARBON-MONOXIDE ; ACTIVE GOLD ; NANOPARTICLES ; ALPHA-FE2O3
AbstractSupported noble metal nanoparticles (including nanoclusters) are widely used in many industrial catalytic processes. While the finely dispersed nanostructures are highly active, they are usually thermodynamically unstable and tend to aggregate or sinter at elevated temperatures. This scenario is particularly true for supported nanogold catalysts because the gold nanostructures are easily sintered at high temperatures, under reaction conditions, or even during storage at ambient temperature. Here, we demonstrate that isolated Au single atoms dispersed on iron oxide nanocrystallites (Au-1/FeOx) are much more sinteringresistant than Au nanostructures, and exhibit extremely high reaction stability for CO oxidation in a wide temperature range. Theoretical studies revealed that the positively charged and surface-anchored Au1 atoms with high valent states formed significant covalent metal-support interactions (CMSIs), thus providing the ultra-stability and remarkable catalytic performance. This work may provide insights and a new avenue for fabricating supported Au catalysts with ultra-high stability.
Language英语
WOS IDWOS:000361057000013
Citation statistics
Cited Times:120[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146516
Collection中国科学院大连化学物理研究所
Affiliation1.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Tsinghua Univ, Minist Educ, Dept Chem, Beijing 100084, Peoples R China
4.Tsinghua Univ, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China
5.Guizhou Normal Coll, Guizhou Prov Key Lab Computat Nanomat Sci, Guiyang 550018, Peoples R China
Recommended Citation
GB/T 7714
Qiao, Botao,Liang, Jin-Xia,Wang, Aiqin,et al. Ultrastable single-atom gold catalysts with strong covalent metal-support interaction (CMSI)[J]. NANO RESEARCH,2015,8(9):2913-2924.
APA Qiao, Botao.,Liang, Jin-Xia.,Wang, Aiqin.,Xu, Cong-Qiao.,Li, Jun.,...&Liu, Jingyue .(2015).Ultrastable single-atom gold catalysts with strong covalent metal-support interaction (CMSI).NANO RESEARCH,8(9),2913-2924.
MLA Qiao, Botao,et al."Ultrastable single-atom gold catalysts with strong covalent metal-support interaction (CMSI)".NANO RESEARCH 8.9(2015):2913-2924.
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