Thermally Activated Formation of Reactive Lattice
Oxygen in Titania on Nanoporous Gold
Version 2 2017-09-25, 12:40
Version 1 2017-09-25, 12:39
Posted on 2017-09-25 - 12:40
Nanoporous gold modified
by atomic layer deposition of titania
was employed as a model, inverse supported precious metal catalyst
to explore the oxidative reactivity of Au/TiO2 catalysts.
The catalyst material is active for oxidation of CO using O from the
titania lattice, even at low temperatures. The reactive lattice oxygen
available for oxidative reactions was formed by thermal activation,
with the total oxidative reactivity of the material showing a strong
dependence on the annealing temperature prior to CO exposure. Finally,
reduction of the titania via CO oxidation can be reversed under relatively
mild conditions by exposure to O2, presenting a viable
mechanism for CO oxidation in steady state catalytic conditions.
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Ewers, Bradley
W.; Crampton, Andrew S.; Biener, Monika M.; Friend, Cynthia M. (2017). Thermally Activated Formation of Reactive Lattice
Oxygen in Titania on Nanoporous Gold. ACS Publications. Collection. https://doi.org/10.1021/acs.jpcc.7b06316
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AUTHORS (4)
BE
Bradley
W. Ewers
AC
Andrew S. Crampton
MB
Monika M. Biener
CF
Cynthia M. Friend