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Title: Activation of Cu(111) surface by decomposition into nanoclusters driven by CO adsorption

Journal Article · · Science

The (111) surface of copper (Cu), its most compact and lowest energy surface, became unstable when exposed to carbon monoxide (CO) gas. Scanning tunneling microscopy reflected that at room temperature in the pressure range 0.1 to 100 Torr, the surface decomposed into clusters decorated by CO molecules attached to edge atoms. Between 0.2 and a few Torr CO, the clusters became mobile in the scale of minutes. Density functional theory demonstrated that the energy gain from CO binding to low-coordinated Cu atoms and the weakening of binding of Cu to neighboring atoms help drive this process. Specifically for softer metals, the optimal balance of these two effects occurs near reaction conditions. Cluster formation activated the surface for water dissociation, an important step in the water-gas shift reaction.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1434969
Alternate ID(s):
OSTI ID: 1565513; OSTI ID: 1608256
Journal Information:
Science, Journal Name: Science Vol. 351 Journal Issue: 6272; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 181 works
Citation information provided by
Web of Science

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Coupling Sub-Nanometric Copper Clusters with Quasi-Amorphous Cobalt Sulfide Yields Efficient and Robust Electrocatalysts for Water Splitting Reaction journal January 2017
Failure of Fermi Level in Referencing Chemical Shift of Molecules on Solid Surfaces journal April 2018
Recent Advances in Breaking Scaling Relations for Effective Electrochemical Conversion of CO 2 journal April 2016
O 2 -Aktivierung an Cerdioxid-Katalysatoren - Zur Bedeutung der kristallographischen Orientierung des Substrats journal November 2017
Umformung von Metallnanopartikeln unter Reaktionsbedingungen journal November 2019
Real‐Time Atomic‐Scale Visualization of Reversible Copper Surface Activation during the CO Oxidation Reaction journal December 2019
O 2 Activation on Ceria Catalysts-The Importance of Substrate Crystallographic Orientation journal November 2017
Reshaping of Metal Nanoparticles Under Reaction Conditions journal February 2020
Real‐Time Atomic‐Scale Visualization of Reversible Copper Surface Activation during the CO Oxidation Reaction journal February 2020
Cost-Effective Palladium-Doped Cu Bimetallic Materials to Tune Selectivity and Activity by using Doped Atom Ensembles as Active Sites for Efficient Removal of Acetylene from Ethylene journal April 2018
Reversible Oxygen-Driven Nickel Oxide Structural Transition on the Nickel(1 1 1) Surface at Near-Ambient Pressure journal March 2018
Needs and Gaps for Catalysis in Addressing Transitions in Chemistry and Energy from a Sustainability Perspective journal January 2019
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Kinetics-assisted discrimination of active sites in Ru catalyzed hydrolytic dehydrogenation of ammonia borane journal January 2019
Photoswitchable de/adsorption of an azobenzene-derived surfactant on a silica surface journal January 2019
In situ generated electron-deficient metallic copper as the catalytically active site for enhanced hydrogen production from alkaline formaldehyde solution journal January 2019
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A novel stable nanopositioner based on a single piezoelectric stack: PistolDrive journal November 2018
Sub nanometer clusters in catalysis journal November 2018
Interaction of CO, O, and CO 2 with Cu cluster supported on Cu(1 1 1): a density functional theory study journal July 2019
Electronic Properties of Vanadium Atoms Adsorption on Clean and Graphene-Covered Cu(111) Surface journal July 2018

Figures / Tables (15)


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