Finite-Size Effects in O and CO Adsorption for the Late Transition Metals

被引：67

作者：

Peterson, Andrew A. ^{[1
,2
]}

Grabow, Lars C. ^{[1
,2
]}

Brennan, Thomas P. ^{[1
]}

Shong, Bonggeun ^{[1
]}

Ooi, Chinchun ^{[1
]}

Wu, Di M. ^{[3
]}

Li, Christina W. ^{[3
]}

Kushwaha, Amit ^{[4
]}

Medford, Andrew J. ^{[1
,2
]}

Mbuga, Felix ^{[1
]}

Li, Lin ^{[2
,3
]}

Norskov, Jens K. ^{[1
,2
,5
]}

机构：

[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[2] Stanford Univ, SUNCAT Ctr Interface Sci & Catalysis, Stanford, CA 94305 USA

[3] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

[4] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

[5] SLAC Natl Accelerator Lab, Menlo Pk, CA USA

来源：

TOPICS IN CATALYSIS | 2012年 / 55卷 / 19-20期

关键词：

Adsorption; Cluster; Periodic; Finite size; CARBON-MONOXIDE OXIDATION; SUPPORTED GOLD CATALYSTS; LOW-TEMPERATURE; OXYGEN REDUCTION; ROOM-TEMPERATURE; NANOPARTICLES; AU; CLUSTERS; TRENDS; TIO2;

D O I：

10.1007/s11244-012-9908-x

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Gold is known to become significantly more catalytically active as its particle size is reduced, and other catalysts are also known to exhibit finite-size effects. To understand the trends related to finite-size effects, we have used density functional theory to study adsorption of representative adsorbates, CO and O, on the late transition metals Co, Ni, Cu, Ir, Pd, Ag, Rh, Pt and Au. We studied adsorption energies and geometries on 13-atom clusters and compared them to the fcc(111) and fcc(211) crystal facets. In all cases, adsorbates were found to bind significantly more strongly to the 13-atom clusters than to the extended surfaces. The binding strength of both adsorbates were found to correlate very strongly with the average coordination number of the metal atoms to which the adsorbate binds, indicating that the finite-size effects in bonding are not specific to gold.

引用

页码：1276 / 1282

页数：7

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