Structure of the Rh2O3(0001) surface

Sara Blomberg; Edvin Lundgren; Rasmus Westerström; Egemen Erdogan; Natalia Martin; Anders Mikkelsen; Jesper N Andersen; F. Mittendorfer; Johan Gustafson

doi:10.1016/j.susc.2012.05.004

Structure of the Rh2O3(0001) surface

Sara Blomberg, Edvin Lundgren, Rasmus Westerström, Egemen Erdogan, Natalia Martin, Anders Mikkelsen, Jesper N Andersen, F. Mittendorfer, Johan Gustafson

Research output: Contribution to journal › Article › peer-review

Abstract

We have studied the (0001) surface termination of Rh2O3 on a Rh(111) single crystal using a combination of high resolution core level spectroscopy, low energy electron diffraction, scanning tunneling microscopy and density functional theory. By exposing the Rh(111) to atomic oxygen we are able to grow Rh2O3 layers exposing the (0001) surface. The experiments support the theoretical predictions stating that the surface is terminated with an O-Rh-O trilayer yielding a RhO2 termination instead of a bulk Rh2O3 termination. The structural details as found by the DFT calculations are presented and reasons for the previously observed strong differences in catalytic activity between the structurally similar RhO2 surface oxide, and the Rh2O3(0001) surface are discussed. (C) 2012 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	1416-1421
Journal	Surface Science
Volume	606
Issue number	17-18
DOIs	https://doi.org/10.1016/j.susc.2012.05.004
Publication status	Published - 2012

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

Free keywords

HRCLS
XPS
STM
LEED
Rh(111)
Rh2O3

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10.1016/j.susc.2012.05.004

Cite this

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title = "Structure of the Rh2O3(0001) surface",

abstract = "We have studied the (0001) surface termination of Rh2O3 on a Rh(111) single crystal using a combination of high resolution core level spectroscopy, low energy electron diffraction, scanning tunneling microscopy and density functional theory. By exposing the Rh(111) to atomic oxygen we are able to grow Rh2O3 layers exposing the (0001) surface. The experiments support the theoretical predictions stating that the surface is terminated with an O-Rh-O trilayer yielding a RhO2 termination instead of a bulk Rh2O3 termination. The structural details as found by the DFT calculations are presented and reasons for the previously observed strong differences in catalytic activity between the structurally similar RhO2 surface oxide, and the Rh2O3(0001) surface are discussed. (C) 2012 Elsevier B.V. All rights reserved.",

keywords = "HRCLS, XPS, STM, LEED, Rh(111), Rh2O3",

author = "Sara Blomberg and Edvin Lundgren and Rasmus Westerstr{\"o}m and Egemen Erdogan and Natalia Martin and Anders Mikkelsen and Andersen, {Jesper N} and F. Mittendorfer and Johan Gustafson",

year = "2012",

doi = "10.1016/j.susc.2012.05.004",

language = "English",

volume = "606",

pages = "1416--1421",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "17-18",

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TY - JOUR

T1 - Structure of the Rh2O3(0001) surface

AU - Blomberg, Sara

AU - Lundgren, Edvin

AU - Westerström, Rasmus

AU - Erdogan, Egemen

AU - Martin, Natalia

AU - Mikkelsen, Anders

AU - Andersen, Jesper N

AU - Mittendorfer, F.

AU - Gustafson, Johan

PY - 2012

Y1 - 2012

N2 - We have studied the (0001) surface termination of Rh2O3 on a Rh(111) single crystal using a combination of high resolution core level spectroscopy, low energy electron diffraction, scanning tunneling microscopy and density functional theory. By exposing the Rh(111) to atomic oxygen we are able to grow Rh2O3 layers exposing the (0001) surface. The experiments support the theoretical predictions stating that the surface is terminated with an O-Rh-O trilayer yielding a RhO2 termination instead of a bulk Rh2O3 termination. The structural details as found by the DFT calculations are presented and reasons for the previously observed strong differences in catalytic activity between the structurally similar RhO2 surface oxide, and the Rh2O3(0001) surface are discussed. (C) 2012 Elsevier B.V. All rights reserved.

AB - We have studied the (0001) surface termination of Rh2O3 on a Rh(111) single crystal using a combination of high resolution core level spectroscopy, low energy electron diffraction, scanning tunneling microscopy and density functional theory. By exposing the Rh(111) to atomic oxygen we are able to grow Rh2O3 layers exposing the (0001) surface. The experiments support the theoretical predictions stating that the surface is terminated with an O-Rh-O trilayer yielding a RhO2 termination instead of a bulk Rh2O3 termination. The structural details as found by the DFT calculations are presented and reasons for the previously observed strong differences in catalytic activity between the structurally similar RhO2 surface oxide, and the Rh2O3(0001) surface are discussed. (C) 2012 Elsevier B.V. All rights reserved.

KW - HRCLS

KW - XPS

KW - STM

KW - LEED

KW - Rh(111)

KW - Rh2O3

U2 - 10.1016/j.susc.2012.05.004

DO - 10.1016/j.susc.2012.05.004

M3 - Article

SN - 0039-6028

VL - 606

SP - 1416

EP - 1421

JO - Surface Science

JF - Surface Science

IS - 17-18

ER -

Structure of the Rh2O3(0001) surface

Abstract

Subject classification (UKÄ)

Free keywords

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