In situ sum frequency generation vibrational spectroscopy study of CO adsorption on Au surfaces promoted by Ar+ sputtering and FeO x additives

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Identification of the active sites is a key factor in understanding the mechanism of gold-catalyzed reactions. In this work we investigated the CO adsorption properties of gold-based model catalysts ranging from native and surface-modified single crystal surfaces to polycrystalline thin films promoted by iron oxide layers. The results, completed with those obtained on a gold nanoparticle-containing system, clearly demonstrate the role of the defect sites in the CO adsorption. In addition, a promoter such as iron oxide can further enhance CO adsorption, probably through a mechanism connected to the interface formation between gold and iron oxide.

Original languageEnglish
Pages (from-to)63-68
Number of pages6
JournalCatalysis Today
Volume158
Issue number1-2
DOIs
Publication statusPublished - Dec 5 2010

Fingerprint

Vibrational spectroscopy
Carbon Monoxide
Gold
Sputtering
Iron oxides
Adsorption
Single crystal surfaces
Nanoparticles
Thin films
Defects
Catalysts
ferric oxide

Keywords

  • CO adsorption
  • CO oxidation
  • Gold/oxide interface
  • Inverse catalysis

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

@article{814cb4d359ef4ba7b55b58ef830c5aa8,
title = "In situ sum frequency generation vibrational spectroscopy study of CO adsorption on Au surfaces promoted by Ar+ sputtering and FeO x additives",
abstract = "Identification of the active sites is a key factor in understanding the mechanism of gold-catalyzed reactions. In this work we investigated the CO adsorption properties of gold-based model catalysts ranging from native and surface-modified single crystal surfaces to polycrystalline thin films promoted by iron oxide layers. The results, completed with those obtained on a gold nanoparticle-containing system, clearly demonstrate the role of the defect sites in the CO adsorption. In addition, a promoter such as iron oxide can further enhance CO adsorption, probably through a mechanism connected to the interface formation between gold and iron oxide.",
keywords = "CO adsorption, CO oxidation, Gold/oxide interface, Inverse catalysis",
author = "O. Hakkel and Z. P{\'a}szti and A. Berk{\'o} and K. Frey and L. Guczi",
year = "2010",
month = "12",
day = "5",
doi = "10.1016/j.cattod.2010.05.039",
language = "English",
volume = "158",
pages = "63--68",
journal = "Catalysis Today",
issn = "0920-5861",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - In situ sum frequency generation vibrational spectroscopy study of CO adsorption on Au surfaces promoted by Ar+ sputtering and FeO x additives

AU - Hakkel, O.

AU - Pászti, Z.

AU - Berkó, A.

AU - Frey, K.

AU - Guczi, L.

PY - 2010/12/5

Y1 - 2010/12/5

N2 - Identification of the active sites is a key factor in understanding the mechanism of gold-catalyzed reactions. In this work we investigated the CO adsorption properties of gold-based model catalysts ranging from native and surface-modified single crystal surfaces to polycrystalline thin films promoted by iron oxide layers. The results, completed with those obtained on a gold nanoparticle-containing system, clearly demonstrate the role of the defect sites in the CO adsorption. In addition, a promoter such as iron oxide can further enhance CO adsorption, probably through a mechanism connected to the interface formation between gold and iron oxide.

AB - Identification of the active sites is a key factor in understanding the mechanism of gold-catalyzed reactions. In this work we investigated the CO adsorption properties of gold-based model catalysts ranging from native and surface-modified single crystal surfaces to polycrystalline thin films promoted by iron oxide layers. The results, completed with those obtained on a gold nanoparticle-containing system, clearly demonstrate the role of the defect sites in the CO adsorption. In addition, a promoter such as iron oxide can further enhance CO adsorption, probably through a mechanism connected to the interface formation between gold and iron oxide.

KW - CO adsorption

KW - CO oxidation

KW - Gold/oxide interface

KW - Inverse catalysis

UR - http://www.scopus.com/inward/record.url?scp=78049237387&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78049237387&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2010.05.039

DO - 10.1016/j.cattod.2010.05.039

M3 - Article

VL - 158

SP - 63

EP - 68

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

IS - 1-2

ER -