Structural Imaging of Surface Oxidation and Oxidation Catalysis on Ru(0001)

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Physical Review B: Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.78.165407· OSTI ID:1020038

Flege, J; Hrbek, J; Sutter, P

Using simultaneous imaging and structural fingerprinting under reaction conditions, we probe the initial oxidation pathway and CO oxidation catalysis on Ru(0001). Oxidation beyond an initial (1 x 1)-O adlayer phase produces a heterogeneous surface, comprising a disordered trilayerlike surface oxide and an ordered RuO{sub 2}(110) thin-film oxide, which form independently and exhibit similar stability. The surface oxide and RuO{sub 2} phases both show high intrinsic catalytic activity. The oxygen adlayer is inactive in isolation but becomes active due to cooperative effects in close proximity to the surface oxide.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: DOE - OFFICE OF SCIENCE
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1020038
• Report Number(s): BNL-95884-2011-JA; TRN: US201116%%22
• Journal Information: Physical Review B: Condensed Matter and Materials Physics, Vol. 78, Issue 16; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CATALYSIS
OXIDATION
OXIDES
OXYGEN
PROBES
STABILITY
national synchrotron light source