23. January 2024, 16:00 until 17:00

Ali Rafsanjani-Abbasi, Institute of Applied Physics, TU Wien

Seminar

A Comparative Study of Late-Transition Metal Single Atoms on Fe2O3(1102)

Precious metals supported on oxides exhibit exceptional effectiveness in various chemical reactions, such as hydrogen evolution, water gas shift, photocatalytic processes, and CO-oxidation reactions due to their elevated activity and/or selectivity. Downsizing catalysts to single atoms enhances the efficiency, and so- called “single-atom catalysis” is now an important field of research. Nevertheless, achieving stable single atoms of late-transition metals on oxide supports without compromising catalytic activity raises significant challenges. This seminar centers on surface science techniques to examine the specific binding environment of rhodium, platinum, and iridium adatoms on α-Fe2O3(11"02)-(1×1). Using STM and XPS, I will discuss the stability of single atoms at room temperature, their adsorption sites, and the impact of O2. Additionally, the sintering behavior of single atoms at elevated temperatures will be traced using XPS and STM.

Calendar entry

Event location

SEM.R. DB gelb 05 B
1040 Wien
Wiedner Hauptstraße 8-10/E134

 

Organiser

IAP
Manuela Marik
marik@iap.tuwien.ac.at

 

Public

Yes

 

Entrance fee

No

 

Registration required

No