Determination of the surface electronic structure of Fe3O4(111) by soft X-ray spectroscopy

被引：19

作者：

Kaya, Sarp ^{[1
,2
]}

Ogasawara, Hirohito ^{[1
,3
]}

Nilsson, Anders ^{[1
,3
]}

机构：

[1] SLAC Natl Accelerator Lab, SUNCAT Ctr Interface Sci & Catalysis, Menlo Pk, CA 94025 USA

[2] Koc Univ, Dept Chem, TR-34450 Istanbul, Turkey

[3] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

来源：

CATALYSIS TODAY | 2015年 / 240卷

关键词：

Fe3O4; Fe2O3; Surface sensitive XPS; O K-edge XAS; Fe Ledge XAS; ABSORPTION SPECTROSCOPY; EMISSION-SPECTROSCOPY; LEED CRYSTALLOGRAPHY; K-EDGE; ALPHA-FE2O3; MAGNETITE; OXIDES; FILMS; DIFFRACTION; TERMINATION;

D O I：

10.1016/j.cattod.2014.07.025

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The determination of surface terminations in transition metal oxides is not trivial because many structural configurations could be possible. They exhibit various terminations depending on the oxidation states of metal cations exposed to the surface. Fe3O4 is one example in which octahedrally and tetrahedrally coordinated Fe2+ and Fe3+ cations coexists with oxygen anions. For the identification of the surface termination of Fe3O4(1 1 1) grown on Pt(1 1 1) we have employed surface sensitive synchrotron based X-ray photoelectron and absorption spectroscopy. It has been shown that the topmost surface is octahedrally coordinated Fe3+ rich. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：184 / 189

页数：6

共 34 条

[1] MAGNETITE FE3O4(111) - SURFACE-STRUCTURE BY LEED CRYSTALLOGRAPHY AND ENERGETICS [J].