Journalartikel

Jahr der Veröffentlichung: 2013

Seiten: 15148-15154

Zeitschrift: Journal of Physical Chemistry C

Bandnummer: 117

Heftnummer: 29

ISSN: 1932-7447

eISSN: 1932-7455

DOI Link: https://doi.org/10.1021/jp404239y

Verlag: American Chemical Society

Abstract: 
With scanning tunneling microscopy (STM) we studied the initial oxidation of Ru(0001) at room temperature using atomic oxygen (O') as oxidizing agent. Even at 300 K, Ru oxide clusters are formed and are located preferentially at single step edges and less likely at double steps and on the flat terrace. The observed Ru-O cluster formation indicates a nucleation and growth process. The cluster formation at room temperature implies that the supply of Ru atoms is not rate limiting in the initial oxidation of Ru(0001). A mobile surface Ru-O precursor species has to be postulated for explaining the observed nucleation and growth process. A mobile surface Ru-O precursor species is considered to be equally involved in the oxidation of Ru with molecular oxygen and the oxidation under electrochemical conditions.

Harvard-Zitierstil: Herd, B., Goritzka, J. and Over, H. (2013) Room Temperature Oxidation of Ruthenium, Journal of Physical Chemistry C, 117(29), pp. 15148-15154. https://doi.org/10.1021/jp404239y

APA-Zitierstil: Herd, B., Goritzka, J., & Over, H. (2013). Room Temperature Oxidation of Ruthenium. Journal of Physical Chemistry C. 117(29), 15148-15154. https://doi.org/10.1021/jp404239y