Single-atom catalysis: Insights from model systems

F Kraushofer, GS Parkinson - Chemical Reviews, 2022 - ACS Publications
The field of single-atom catalysis (SAC) has expanded greatly in recent years. While there
has been much success developing new synthesis methods, a fundamental disconnect …

Controlling the charge state of supported nanoparticles in catalysis: lessons from model systems

G Pacchioni, HJ Freund - Chemical Society Reviews, 2018 - pubs.rsc.org
Model systems are very important to identify the working principles of real catalysts, and to
develop concepts that can be used in the design of new catalytic materials. In this review we …

Probing the surfaces of heterogeneous catalysts by in situ IR spectroscopy

C Lamberti, A Zecchina, E Groppo… - Chemical Society …, 2010 - pubs.rsc.org
This critical review describes the reactivity of heterogeneous catalysts from the point of view
of four simple, but essential for Chemistry, molecules (namely dihydrogen, carbon …

Electron transfer at oxide surfaces. The MgO paradigm: from defects to ultrathin films

G Pacchioni, H Freund - Chemical reviews, 2013 - ACS Publications
Electron transfer (ET) is a fundamental process in physics, chemistry, and biology. 1 Charge
transfer determines phenomena like oxidation and reduction, bond activation and bond …

Electronic interactions and charge transfers of metal atoms and clusters on oxide surfaces

G Pacchioni - Physical Chemistry Chemical Physics, 2013 - pubs.rsc.org
Understanding the interaction of small metal clusters and isolated atoms with oxide surfaces
is crucial in order to rationalize the properties of heterogeneous catalysts composed of sub …

Carbon monoxide MgO from dispersed solids to single crystals: a review and new advances

G Spoto, EN Gribov, G Ricchiardi, A Damin… - Progress in surface …, 2004 - Elsevier
In this review we describe 30 years of research on the surface properties of magnesium
oxide, considered as the model prototype oxide of cubic structure. The surface properties of …

Geometric characterization of a singly charged oxygen vacancy on a single-crystalline MgO (001) film by electron paramagnetic resonance spectroscopy

M Sterrer, E Fischbach, T Risse, HJ Freund - Physical review letters, 2005 - APS
Electron paramagnetic resonance spectra of singly charged surface oxygen vacancies (F or
color centers) formed by electron bombardment on a single-crystalline MgO film under UHV …

Identification of color centers on MgO (001) thin films with scanning tunneling microscopy

M Sterrer, M Heyde, M Novicki, N Nilius… - The Journal of …, 2006 - ACS Publications
Localized electronic defects on the surface of a 4 monolayer (ML) thin MgO (001) film
deposited on Ag (001) have been investigated by low-temperature scanning tunneling …

Excess electrons stabilized on ionic oxide surfaces

M Chiesa, MC Paganini, E Giamello… - Accounts of chemical …, 2006 - ACS Publications
Surface excess electrons are remarkable chemical entities that provide great opportunities
for the design of new materials with precisely tuned electronic and magnetic properties. In …

Comparison of the reduction of metal oxide surfaces: TiO2-anatase, TiO2-rutile and SnO2-rutile

A Bouzoubaa, A Markovits, M Calatayud, C Minot - Surface Science, 2005 - Elsevier
Reduction of stoichiometric metal oxide can be reached by two processes: oxygen
vacancies or hydrogenation. We present DFT-GGA periodic calculations for the O vacancies …