A spectro-microscopic study of the reactive phase separation of Au+Pd and O on Rh(110)

被引：4

作者：

Locatelli, A.

Aballe, L.

Mentes, T. O.

Guo, F. Z.

Kiskinova, A.

机构：

[1] Sincrotrone Trieste, SCpA, I-34012 Trieste, Italy

[2] JASRI SPring 8, Sayo, Hyogo 6795198, Japan

来源：

SURFACE SCIENCE | 2007年 / 601卷 / 20期

关键词：

LEEM; XPEEM; surface chemical reaction; self-assembly; rhodium;

D O I：

10.1016/j.susc.2007.05.025

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：

Reorganization of Au + Pd submonolayers on a Rh(110) surface occurring during the water formation reaction has been observed and characterized by low energy electron microscopy (LEEM) and X-ray photoemission electron microscopy (XPEEM). The results demonstrate segregation of Au + Pd and oxygen into separate surface phases, the morphology and size of the 0 and An + Pd patterns being governed by the reaction parameters and adsorbate coverage. At moderate Au + Pd coverages and temperatures in the range 760-860 K, lamellar periodic Au + Pd/O micro-structures are generated. The results are interpreted in terms of kinetic and thermodynamic considerations. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：4663 / 4668

页数：6

共 37 条

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