Modifying behaviour of Cu on the orientation of formate on ZnO(0001̄)-O

A. Gutiérrez-Sosa; T. M. Evans; A. P. Woodhead; R. Lindsay; C. A. Muryn; G. Thornton; J. Yoshihara; S. C. Parker; C. T. Campbell; R. J. Oldman

doi:10.1016/S0039-6028(00)01074-8

Modifying behaviour of Cu on the orientation of formate on ZnO(0001̄)-O

A. Gutiérrez-Sosa, T. M. Evans, A. P. Woodhead, R. Lindsay, C. A. Muryn, G. Thornton, J. Yoshihara, S. C. Parker, C. T. Campbell, R. J. Oldman

Materials Engineering

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

Abstract

The orientation of formic acid (HCOOH) on ZnO(0001̄)-O and the effect of co-adsorbed Cu have been studied using polarisation dependent C K-edge near edge X-ray absorption fine structure. Formate created by exposure of the substrate to 20 L of HCOOH at 110 K and heating to 340 K is tilted by 55 ± 5° with respect to the surface normal. Pre-adsorbing Cu to create 2D islands covering about half the substrate results in an apparent tilt angle of 32 ± 5° with respect to the surface normal. Since this is close to the magic angle, the apparent tilt could arise from a random orientation of the molecule. The origin of the apparent tilt is likely to be buckling of the Cu(110)-like islands.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Surface Science
Volume	477
Issue number	1
DOIs	https://doi.org/10.1016/S0039-6028(00)01074-8
Publication status	Published - 10 Apr 2001

Keywords

Carboxylic acid
Chemisorption
Copper
Low index single crystal surfaces
Near edge extended X-ray absorption fine structure (NEXAFS)
Zinc oxide

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10.1016/S0039-6028(00)01074-8

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title = "Modifying behaviour of Cu on the orientation of formate on ZnO(000{\=1})-O",

abstract = "The orientation of formic acid (HCOOH) on ZnO(000{\=1})-O and the effect of co-adsorbed Cu have been studied using polarisation dependent C K-edge near edge X-ray absorption fine structure. Formate created by exposure of the substrate to 20 L of HCOOH at 110 K and heating to 340 K is tilted by 55 ± 5° with respect to the surface normal. Pre-adsorbing Cu to create 2D islands covering about half the substrate results in an apparent tilt angle of 32 ± 5° with respect to the surface normal. Since this is close to the magic angle, the apparent tilt could arise from a random orientation of the molecule. The origin of the apparent tilt is likely to be buckling of the Cu(110)-like islands.",

keywords = "Carboxylic acid, Chemisorption, Copper, Low index single crystal surfaces, Near edge extended X-ray absorption fine structure (NEXAFS), Zinc oxide",

author = "A. Guti{\'e}rrez-Sosa and Evans, {T. M.} and Woodhead, {A. P.} and R. Lindsay and Muryn, {C. A.} and G. Thornton and J. Yoshihara and Parker, {S. C.} and Campbell, {C. T.} and Oldman, {R. J.}",

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doi = "10.1016/S0039-6028(00)01074-8",

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T1 - Modifying behaviour of Cu on the orientation of formate on ZnO(0001̄)-O

AU - Gutiérrez-Sosa, A.

AU - Evans, T. M.

AU - Woodhead, A. P.

AU - Lindsay, R.

AU - Muryn, C. A.

AU - Thornton, G.

AU - Yoshihara, J.

AU - Parker, S. C.

AU - Campbell, C. T.

AU - Oldman, R. J.

PY - 2001/4/10

Y1 - 2001/4/10

N2 - The orientation of formic acid (HCOOH) on ZnO(0001̄)-O and the effect of co-adsorbed Cu have been studied using polarisation dependent C K-edge near edge X-ray absorption fine structure. Formate created by exposure of the substrate to 20 L of HCOOH at 110 K and heating to 340 K is tilted by 55 ± 5° with respect to the surface normal. Pre-adsorbing Cu to create 2D islands covering about half the substrate results in an apparent tilt angle of 32 ± 5° with respect to the surface normal. Since this is close to the magic angle, the apparent tilt could arise from a random orientation of the molecule. The origin of the apparent tilt is likely to be buckling of the Cu(110)-like islands.

AB - The orientation of formic acid (HCOOH) on ZnO(0001̄)-O and the effect of co-adsorbed Cu have been studied using polarisation dependent C K-edge near edge X-ray absorption fine structure. Formate created by exposure of the substrate to 20 L of HCOOH at 110 K and heating to 340 K is tilted by 55 ± 5° with respect to the surface normal. Pre-adsorbing Cu to create 2D islands covering about half the substrate results in an apparent tilt angle of 32 ± 5° with respect to the surface normal. Since this is close to the magic angle, the apparent tilt could arise from a random orientation of the molecule. The origin of the apparent tilt is likely to be buckling of the Cu(110)-like islands.

KW - Carboxylic acid

KW - Chemisorption

KW - Copper

KW - Low index single crystal surfaces

KW - Near edge extended X-ray absorption fine structure (NEXAFS)

KW - Zinc oxide

UR - http://www.scopus.com/inward/record.url?scp=0035836616&partnerID=8YFLogxK

U2 - 10.1016/S0039-6028(00)01074-8

DO - 10.1016/S0039-6028(00)01074-8

M3 - Article

AN - SCOPUS:0035836616

SN - 0039-6028

VL - 477

SP - 1

EP - 7

JO - Surface Science

JF - Surface Science

IS - 1

ER -

Modifying behaviour of Cu on the orientation of formate on ZnO(0001̄)-O

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Keywords

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