Tuning the Reactivity of Ultrathin Oxides: NO Adsorption on Monolayer FeO(111)
Artikel i vetenskaplig tidskrift, 2016

Ultrathin metal oxides exhibit unique chemical properties and show promise for applications in heterogeneous catalysis. Monolayer FeO films supported on metal surfaces show large differences in reactivity depending on the metal substrate, potentially enabling tuning of the catalytic properties of these materials. Nitric oxide (NO) adsorption is facile on silver-supported FeO, whereas a similar film grown on platinum is inert to NO under similar conditions. Ab initio calculations link this substrate-dependent behavior to steric hindrance caused by substrate-induced rumpling of the FeO surface, which is stronger for the platinum-supported film. Calculations show that the size of the activation barrier to adsorption caused by the rumpling is dictated by the strength of the metal–oxide interaction, offering a straightforward method for tailoring the adsorption properties of ultrathin films.

surface chemistry

nitric oxide

heterogeneous catalysis

oxide films

Författare

Lindsay R. Merte

Lunds universitet

Christopher Heard

Chalmers, Fysik, Kemisk fysik

Kompetenscentrum katalys (KCK)

Feng Zhang

University of Florida

Juhee Choi

University of Florida

Mikhail Shipilin

Lunds universitet

Johan Gustafson

Lunds universitet

Jason F. Weaver

University of Florida

Henrik Grönbeck

Kompetenscentrum katalys (KCK)

Chalmers, Fysik, Kemisk fysik

Edvin Lundgren

Lunds universitet

Angewandte Chemie - International Edition

1433-7851 (ISSN) 1521-3773 (eISSN)

Vol. 55 32 9267-9271

Ämneskategorier

Kemiteknik

DOI

10.1002/anie.201601647

PubMed

27346455