332 citations · 1.3k across the 20 of their papers we have counts for
20 papers
CO on a Rh/Fe3O4 single-atom catalyst: high-resolution infrared spectroscopy and near-ambient-pressure scanning tunnelling microscopy
Nail El Hocine Barama, Chunlei Wang, Panukorn Sombut +14
Infrared reflection absorption spectroscopy (IRAS) offers a powerful route to bridging the materials and pressure gaps between surface science and powder catalysis. Using a newly d…
Hydrogen Activation via Dihydride Formation on a Rh1/Fe3O4(001) Single-Atom Catalyst
Chunlei Wang, Panukorn Sombut, Lena Puntscher +10
Hydrogen activation is a key elementary step in catalytic hydrogenation. In heterogeneous catalysis, it usually proceeds through dissociative adsorption on metal nanoparticles foll…
Multi-Technique Characterization of Rhodium Gem-Dicarbonyls on TiO(110)
Moritz Eder, Faith J. Lewis, Johanna I. Hütner +12
Gem-dicarbonyls of transition metals supported on metal (oxide) surfaces are common intermediates in heterogeneous catalysis. While infrared (IR) spectroscopy is a standard tool fo…
Digging its own Site: Linear Coordination Stabilizes a Pt1/Fe2O3 Single-Atom Catalyst
Ali Rafsanjani-Abbasi, Florian Buchner, Faith J. Lewis +15
Determining the local coordination of the active site is a pre-requisite for the reliable modeling of single-atom catalysts (SACs). Obtaining such information is difficult on powde…
A Multi-Technique Study of C2H4 Adsorption on a Model Single-Atom Rh1 Catalyst
Chunlei Wang, Panukorn Sombut, Lena Puntscher +9
Single-atom catalysts are potentially ideal model systems to investigate structure-function relationships in catalysis, if the active sites can be uniquely determined. In this work…
Interaction of surface cations of cleaved mica with water in vapor and liquid forms
Giada Franceschi, Sebastian Brandstetter, Jan Balajka +5
Natural minerals contain ions that become hydrated when they come into contact with water in vapor and liquid forms. Muscovite mica -- a common phyllosilicate with perfect cleavage…
A Multi-Technique Study of C2H4 Adsorption on Fe3O4(001)
Lena Puntscher, Panukorn Sombut, Chunlei Wang +10
The adsorption/desorption of ethene (C2H4), also commonly known as ethylene, on Fe3O4(001) was studied under ultrahigh vacuum conditions using temperature programmed desorption (TP…
Rapid oxygen exchange between hematite and water vapor
Zdenek Jakub, Matthias Meier, Florian Kraushofer +6
Oxygen exchange at oxide/liquid and oxide/gas interfaces is important in technology and environmental studies, as it is closely linked to both catalytic activity and material degra…
Atomic-scale studies of Fe3O4(001) and TiO2(110) surfaces following immersion in CO2-acidified water
Francesca Mirabella, Jan Balajka1, Jiri Pavelec +5
Difficulties associated with the integration of liquids into a UHV environment make surface-science style studies of mineral dissolution particularly challenging. Recently, we deve…
Does a pristine, unreconstructed SrTiO(001) surface exist?
Igor Sokolović, Giada Franceschi, Zhichang Wang +6
The surfaces of perovskite oxides affect their functional properties, and while a bulk-truncated (11) termination is generally assumed, its existence and stability is contr…
Self-limited Growth of an Oxyhydroxide Phase at the Fe3O4(001) Surface in Liquid and Ambient Pressure Water
Florian Kraushofer, Francesca Mirabella, Jian Xu +10
Atomic-scale investigations of metal oxide surfaces exposed to aqueous environments are vital to understand degradation phenomena (e.g. dissolution and corrosion) as well as the pe…
Apparatus for dosing liquid water in ultrahigh vacuum
Jan Balajka, Jiri Pavelec, Mojmir Komora +2
The structure of the solid-liquid interface often defines function and performance of materials in applications. To study the interface at the atomic scale, we extended an ultrahig…
Charge Trapping at the Step Edges of TiO2 Anatase (101)
Martin Setvin, Xianfeng Hao, Benjamin Daniel +7
A combination of Photoemission, Atomic Force and Scanning Tunneling Microscopy/Spectroscopy measurements shows that excess electrons in TiO2 anatase (101) surface are trapped at st…
Adsorption of water at the SrO surface of ruthenates
Daniel Halwidl, Bernhard Stöger, Wernfried Mayr-Schmölzer +9
Although perovskite oxides hold promise in applications ranging from solid oxide fuel cells to catalysts, their surface chemistry is poorly understood at the molecular level. Here…
Subsurface Cation Vacancy Stabilization of the Magnetite (001) Surface
R. Bliem, E. McDermott, P. Ferstl +9
Iron oxides play an increasingly prominent role in heterogeneous catalysis, hydrogen production, spintronics and drug delivery. The surface or material interface can be performance…
Water Agglomerates on Fe3O4(001)
Matthias Meier, Jan Hulva, Zdenek Jakub +7
Determining the structure of water adsorbed on solid surfaces is a notoriously difficult task, and pushes the limits of experimental and theoretical techniques. Here, we follow the…
An Atomic-Scale View of CO and H2 Oxidation on a Pt-Fe3O4 Model Catalyst
Roland Bliem, Jessi van der Hoeven, Adam Zavodny +6
Metal-support interactions are frequently invoked to explain the enhanced catalytic activity of metal nanoparticles dispersed over reducible metal-oxide supports, yet the atomic sc…
A Multi-Technique Study of Adsorption on Magnetite
Jiri Pavelec, Jan Hulva, Daniel Halwidl +7
The adsorption of on the (001)-( )R45° surface was studied experimentally using temperature programmed desorption (TPD), electron spe…
The role of surface defects in the adsorption of methanol on Fe3O4(001)
Oscar Gamba, Jan Hulva, Jiri Pavelec +4
The adsorption of methanol (CH3OH) at the Fe3O4(001)-c(2x2) surface was studied using X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and temperature-p…
CO Induced Adatom Sintering in a Model Catalyst: Pd/Fe3O4
Gareth S. Parkinson, Zbynek Novotny, Giacomo Argentero +5
The coarsening of catalytically-active metal clusters is often accelerated by the presence of gases through the formation of mobile intermediates, though the exact mechanism throug…