Hole patterns in ultrathin vanadium oxide layers on a Rh(111) surface during catalytic oxidation reactions with NO.

Various oxidation reactions with NO as oxidant have been investigated on a partially VO covered Rh(111) surface (θ = 0.3 MLE) in the 10 mbar range, using photoelectron emission microscopy (PEEM) as spatially resolving method. The PEEM studies are complemented by rate measurements and by low-energy electron diffraction.