Oxygen Dimerization at a Zn(0001)-O Surface

✍ Scribed by A.F. Carley; M.K. Rajumon; M.W. Roberts; Wang Fancheng

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 108 KB
• Volume: 112
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1994.1292

✦ Synopsis

The presence of Ba at a (\mathrm{Zn}(0001)-0) surface (up to (\theta_{\mathrm{Bg}} \sim 3 \mathrm{ML}) ) gives rise to (\mathrm{BaO}), followed by a peroxo-type species ( (\mathrm{Ba}, \mathrm{Zn}) ) (\mathrm{O}{2}^{\delta-}) at the interface. Such peroxo species are also formed when a Ba-covered (\mathrm{Zn}) surface ( (\theta{\mathrm{Ba}} \sim 0.3 \mathrm{ML}) ) exposed to dioxygen at 200 (\mathrm{K}) is warmed to (400 \mathrm{~K}). Peroxo formation occurs via the oxidation of (\mathrm{O}^{2-}) species. 1994 Academic Press, Inc.