Heteroepitaxial growth of novel MoO3 nanostructures on Au(111)

被引：32

作者：

Biener, MM

Friend, CM

机构：

[1] Harvard Univ, Dept Chem, Cambridge, MA 02138 USA

[2] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

SURFACE SCIENCE | 2004年 / 559卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

low energy electron diffraction (LEED); scanning tunneling microscopy; catalysis; epitaxy; growth; surface chemical reaction; gold; molybdenum oxides;

D O I：

10.1016/j.susc.2004.04.021

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：

We have developed a synthetic procedure that yields novel nanocrystalline, islands of MoO3 on Au(111). Careful control of the growth conditions yields monolayer islands with a rectangular unit cell that is aligned with the Au substrate. These structures are distinctly different than either bulk MoO3 or than ramified, two-dimensional MoO3 islands formed on Au(111) which were recently reported [J. Am. Chem. Soc. 125 (2003) 8059, Surf. Sci. 512 (2002) L353]. The atomic structure of these single-layer MoO3 islands has been characterized by scanning tunnelling microscopy (STM), low energy electron diffraction (LEED), X-ray photoelectron spectroscopy (XPS), and Auger electron spectroscopy (AES). We discuss our synthetic method and important characteristics of the MoO3 islands. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：L173 / L179

页数：7

共 30 条

[1] EFFECT OF ALKALI-METAL CATIONS ON THE STRUCTURE OF MO(VI) SIO2 CATALYSTS AND ITS RELEVANCE TO THE SELECTIVE OXIDATION OF METHANE AND METHANOL [J].