Ab initio study on the adsorption of oxygen on Co(111) and its subsurface incorporation
Ab initio study on the adsorption of oxygen on Co(111) and its subsurface incorporation
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Co(111) 上氧的吸附及其地下掺入的从头算研究
DOI:
10.1140/epjb/e2014-50292-0
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发表时间:
2015-01
影响因子:
1.6
通讯作者:
X.Q. Dai
中科院分区:
文献类型:
--
作者:
S.H. Ma;Z.Y. Jiao;T.X. Wang;X.Q. Dai
The adsorption of oxygen on Co(111) and its subsurface incorporation is studied by density-functional theory calculations. Calculated adsorption energies, geometries and electronic structures are discussed in comparison with that of O/Co(0001). The results indicate that oxygen adsorption in hcp-hollow sites on Co(111) are the most preferred in a coverage range of 0.11–1.0 ML, and the surface electronic structure modifications for O/Co(111) points to a consistent picture of Hammer-Nørskov model. In addition, present calculations show that oxygen atoms incorporate into the first subsurface layer forming an O-Co-O trilayer on top Co(111), which possibly undergoes conversion to cobalt oxides. The behaviors of oxygen on Co(111) are similar to that of O/Co(0001).
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