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
heterogeneous catalysis
oxide films
nitric oxide
Författare
Lindsay R. Merte
Lunds universitet
Christopher Heard
Chalmers, Fysik, Kemisk fysik
Kompetenscentrum katalys
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
Chalmers, Fysik, Kemisk fysik
Kompetenscentrum katalys
Edvin Lundgren
Lunds universitet
Angewandte Chemie - International Edition
1433-7851 (ISSN) 1521-3773 (eISSN)
Vol. 55 32 9267-9271Ämneskategorier
Kemiteknik
Annan fysik
DOI
10.1002/anie.201601647
PubMed
27346455