Adsorption of carbon monoxide on Au(1 1 0)-(1 × 2)

J. M. Gottfried; K. J. Schmidt; S. L M Schroeder; K. Christmann

doi:10.1016/S0039-6028(03)00595-8

Adsorption of carbon monoxide on Au(1 1 0)-(1 × 2)

J. M. Gottfried, K. J. Schmidt, S. L M Schroeder, K. Christmann

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

Abstract

The adsorption of carbon monoxide on a gold (110)-(1 × 2) surface was studied between 28 and 300 K by means of TDS, UPS, ΔΦ, NEXAFS, and LEED. Below 150 K, CO adsorbs non-dissociatively with high initial sticking probability (S0 = 0.9 at 28 K). The isosteric heat of CO adsorption is 59 kJ/mol for ΘCO → 0 and decreases strongly with coverage, indicating weak chemisorption and substantial CO-CO repulsion, in agreements with TDS results. Thermal desorption spectra show at least five desorption states corresponding to desorption energies between 38 and 8 kJ/mol. According to TDS, chemisorbed and physisorbed CO coexist in the first layer, a result that is corroborated by UV photoemission spectra. CO adsorption has a complex influence on ΔΦ and leads to a work function reduction of -0.95 eV at monolayer coverage. TDS and entropy measurements suggest that the state of chemisorbed CO at 160 K is best described by the model of a two-dimensional gas. No ordered CO overlayer structures were observed in the whole coverage and temperature range. © 2003 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	206-224
Number of pages	18
Journal	Surface Science
Volume	536
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(03)00595-8
Publication status	Published - 20 Jun 2003

Keywords

Carbon monoxide
Chemisorption
Gold
Near edge extended X-ray absorption fine structure (NEXAFS)
Photoelectron spectroscopy
Physical adsorption
Thermal desorption spectroscopy
Work function measurements

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10.1016/S0039-6028(03)00595-8

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@article{c20671f58fae40f3a90751b3ab98aa24,

title = "Adsorption of carbon monoxide on Au(1 1 0)-(1 × 2)",

abstract = "The adsorption of carbon monoxide on a gold (110)-(1 × 2) surface was studied between 28 and 300 K by means of TDS, UPS, ΔΦ, NEXAFS, and LEED. Below 150 K, CO adsorbs non-dissociatively with high initial sticking probability (S0 = 0.9 at 28 K). The isosteric heat of CO adsorption is 59 kJ/mol for ΘCO → 0 and decreases strongly with coverage, indicating weak chemisorption and substantial CO-CO repulsion, in agreements with TDS results. Thermal desorption spectra show at least five desorption states corresponding to desorption energies between 38 and 8 kJ/mol. According to TDS, chemisorbed and physisorbed CO coexist in the first layer, a result that is corroborated by UV photoemission spectra. CO adsorption has a complex influence on ΔΦ and leads to a work function reduction of -0.95 eV at monolayer coverage. TDS and entropy measurements suggest that the state of chemisorbed CO at 160 K is best described by the model of a two-dimensional gas. No ordered CO overlayer structures were observed in the whole coverage and temperature range. {\textcopyright} 2003 Elsevier Science B.V. All rights reserved.",

keywords = "Carbon monoxide, Chemisorption, Gold, Near edge extended X-ray absorption fine structure (NEXAFS), Photoelectron spectroscopy, Physical adsorption, Thermal desorption spectroscopy, Work function measurements",

author = "Gottfried, {J. M.} and Schmidt, {K. J.} and Schroeder, {S. L M} and K. Christmann",

year = "2003",

month = jun,

day = "20",

doi = "10.1016/S0039-6028(03)00595-8",

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volume = "536",

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TY - JOUR

T1 - Adsorption of carbon monoxide on Au(1 1 0)-(1 × 2)

AU - Gottfried, J. M.

AU - Schmidt, K. J.

AU - Schroeder, S. L M

AU - Christmann, K.

PY - 2003/6/20

Y1 - 2003/6/20

N2 - The adsorption of carbon monoxide on a gold (110)-(1 × 2) surface was studied between 28 and 300 K by means of TDS, UPS, ΔΦ, NEXAFS, and LEED. Below 150 K, CO adsorbs non-dissociatively with high initial sticking probability (S0 = 0.9 at 28 K). The isosteric heat of CO adsorption is 59 kJ/mol for ΘCO → 0 and decreases strongly with coverage, indicating weak chemisorption and substantial CO-CO repulsion, in agreements with TDS results. Thermal desorption spectra show at least five desorption states corresponding to desorption energies between 38 and 8 kJ/mol. According to TDS, chemisorbed and physisorbed CO coexist in the first layer, a result that is corroborated by UV photoemission spectra. CO adsorption has a complex influence on ΔΦ and leads to a work function reduction of -0.95 eV at monolayer coverage. TDS and entropy measurements suggest that the state of chemisorbed CO at 160 K is best described by the model of a two-dimensional gas. No ordered CO overlayer structures were observed in the whole coverage and temperature range. © 2003 Elsevier Science B.V. All rights reserved.

AB - The adsorption of carbon monoxide on a gold (110)-(1 × 2) surface was studied between 28 and 300 K by means of TDS, UPS, ΔΦ, NEXAFS, and LEED. Below 150 K, CO adsorbs non-dissociatively with high initial sticking probability (S0 = 0.9 at 28 K). The isosteric heat of CO adsorption is 59 kJ/mol for ΘCO → 0 and decreases strongly with coverage, indicating weak chemisorption and substantial CO-CO repulsion, in agreements with TDS results. Thermal desorption spectra show at least five desorption states corresponding to desorption energies between 38 and 8 kJ/mol. According to TDS, chemisorbed and physisorbed CO coexist in the first layer, a result that is corroborated by UV photoemission spectra. CO adsorption has a complex influence on ΔΦ and leads to a work function reduction of -0.95 eV at monolayer coverage. TDS and entropy measurements suggest that the state of chemisorbed CO at 160 K is best described by the model of a two-dimensional gas. No ordered CO overlayer structures were observed in the whole coverage and temperature range. © 2003 Elsevier Science B.V. All rights reserved.

KW - Carbon monoxide

KW - Chemisorption

KW - Gold

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

KW - Photoelectron spectroscopy

KW - Physical adsorption

KW - Thermal desorption spectroscopy

KW - Work function measurements

U2 - 10.1016/S0039-6028(03)00595-8

DO - 10.1016/S0039-6028(03)00595-8

M3 - Article

SN - 0039-6028

VL - 536

SP - 206

EP - 224

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Adsorption of carbon monoxide on Au(1 1 0)-(1 × 2)

Abstract

Keywords

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