Tailoring the Structure of Water at a Metal Surface: A Structural Analysis of the Water Bilayer Formed on an Alloy Template

被引：33

作者：

McBride, Fiona ^{[1
]}

Darling, George R. ^{[1
]}

Pussi, Katariina ^{[2
]}

Hodgson, Andrew ^{[1
]}

机构：

[1] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England

[2] Lappeenranta Univ Technol, Dept Math & Phys, Lappeenranta 53851, Finland

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 22期

基金：

芬兰科学院; 英国工程与自然科学研究理事会;

关键词：

PARTIAL DISSOCIATION; ADSORPTION; RU(0001);

D O I：

10.1103/PhysRevLett.106.226101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent studies show that structures based on the traditional "icelike" water bilayer are not stable on flat transition metal surfaces and, instead, more complex wetting layers are formed. Here we show that an ordered bilayer can be formed on a SnPt(111) alloy template and determine the structure of the water layer by low energy electron diffraction. Close agreement is found between experiment and the structure calculated by density functional theory. Corrugation of the alloy surface allows only alternate water molecules to chemisorb, stabilizing the H-down water bilayer by reducing the metal-hydrogen repulsion compared to a flat surface.

引用

页数：4

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