Fig. 2: Room Temperature CO adsorption on 1 MLE of CoO0.25 (a) and CoO (b) on Au(111).
From: Elucidating the active phases of CoOx films on Au(111) in the CO oxidation reaction
a C 1 s XPS region of CoO0.25 in UHV (gray, bottom); under 100 mTorr of CO (red, middle), and after pumping out the gas (gray, top); (b) C1s XPS region of CoO in UHV (gray, bottom), under 100 mTorr CO (blue, middle) and 100 mTorr CO2 (blue, top). Molecular CO adsorbs only on metallic Co, and forms carbonates on the CoO regions. The amount of carbonate increases substantially in the presence of CO2 gas (top trace). The XPS data were acquired at beamline 23-ID-2 (IOS) of NSLS-II.
