Speaker
Mr
Ali Rafsanjani Abbasi
(Vienna University of Technology)
Description
Pt-based catalysts are among the most efficient catalysts for the hydrogen evolution, photocatalytic and CO-oxidation reactions. However, the high cost of Pt and its susceptibility to CO poisoning are major drawbacks. Downsizing catalyst to single atoms is an effective way to reach maximum efficiency. Nevertheless, stabilization of single atoms without compromising catalytic activity is a key challenge.
Here, we present a study of the thermal stability and CO-induced mobility of single Pt atoms at the α-Fe2O3(11 ̅02) surface. Thermally induced and CO-induced sintering of the Pt single atoms are traced using STM and XPS. Also, mobility and rearrangement of adatoms have been determined with varying CO pressure in the background.
Primary authors
Mr
Ali Rafsanjani Abbasi
(Vienna University of Technology)
Mr
Florian Kraushofer
(Institute of Applied Physics, TU Wien)
Mr
Moritz Eder
(Chair of Physical Chemistry, TU München)
Dr
Jiri Pavelec
(Institute of Applied Physics, TU Wien)
Ms
Lena Haager
(Institute of Applied Physics, TU Wien)
Ms
Giada Franceschi
(Institute of Applied Physics, TU Wien)
Dr
Michele Riva
(Institute of Applied Physics, TU Wien)
Prof.
Michael Schmid
(Institute of Applied Physics, TU Wien)
Prof.
Ulrike Diebold
(Institute of Applied Physics, TU Wien)
Prof.
Gareth S. Parkinson
(Institute of Applied Physics, TU Wien)
