Adsorption of O2 and NO on Pd nanocrystals supported on Al2O3/NiAl(110):: overlayer and edge structures

被引：39

作者：

Hansen, KH ^{[1
]}

Sljivancanin, Z ^{[1
]}

Lægsgaard, E ^{[1
]}

Besenbacher, F ^{[1
]}

Stensgaard, I ^{[1
]}

机构：

[1] Aarhus Univ, Ctr Atom Scale Mat Phys, Inst Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

SURFACE SCIENCE | 2002年 / 505卷 / 1-3期

关键词：

scanning tunneling microscopy; density functional calculations; chemisorption; palladium; oxygen; nitrogen oxides; single crystal surfaces; clusters;

D O I：

10.1016/S0039-6028(02)01437-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Adsorbate-induced overlayers on nanosized metal clusters have been studied with atomic resolution for the first time. Using scanning tunneling microscopy on supported palladium nanocrystals it was found that oxygen forms a p(2 x 2) overlayer phase and nitric oxide a c(4 x 2) overlayer phase. Adsorption of oxygen has a prominent effect on the cluster edges. On the basis of density functional theory calculations the effect is assigned to an oxygen-induced edge reconstruction. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：25 / 38

页数：14

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