XPS and UPS study of oxygen states on silver

Synthesis of Ag 3 PO 4 -polyvinyl alcohol hybrid microcrystal with enhanced visible light photocatalytic activity

“…8c shows the O1s peaks. The peak at 532.0 eV might attribute to the P O and C O group, that at 530.3 eV might be assigned to the bridge of P O P and Ag O P group, and the small peak at 528.6 eV might attribute to the atomic oxygen in an ionic Ag O bond [21]. After Ar + sputtering (Fig.…”

LaGaO3-based cermet for solid oxide fuel cell cathodes

“…The low energy peak is due to the inducement of ionized silver atoms by adsorbed oxygen as the chemical characteristics of the adsorbed oxygen is of atomic in nature and of ionic in character like that of Ag-O bonding. 38 The adsorbed oxygen state can be related with that of surface oxide like film as proposed by Li et al 39 When the electronic states of silver and oxygen overlap they will hybridize and form bonding and antibonding states. The hybridization energy will be attractive if only the bonding state becomes occupied, and it will counteract the energy loss due to orthogonalization.…”

Locating Catalytically Active Oxygen on Ag(1 1 1)—A Spectromicroscopy Study

“…There are strong indications that the 530 eV species plays a central role in the ethylene epoxidation over silver catalysts, and recent in situ XPS and in situ STM experiments have correlated it with the active form of oxygen for this reaction. [14,15] The 530 eV species had at first been interpreted as molecularly adsorbed oxygen [16,17] until its atomic nature was demonstrated. [18] It has been suggested that the 530 eV species is formed by oxygen atoms on subsurface sites.…”