AgO XPS Spectra

XPS data have been obtained from a pressed AgO powder sample obtained from AESAR. Obtaining high-quality XPS data from a single oxide state is difficult because multiple oxide states, hydroxides, and other contaminants are usually present. The AgO sample was annealed in vacuum at 100°C for 30 min to reduce the amounts of contaminants present. The primary contaminant on this sample is a bicarbonate species that was significantly reduced during the anneal. The anneal temperature is below that which results in decomposition of AgO and Ag2O. These spectra will be useful in XPS studies of O/Ag systems such as alumina-supported silver epoxidation catalysts.