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	Activated dissociation of O-2 on Pb(111) surfaces by Pb adatoms
	Yang, Yu ; Li, Jia ; Liu, Zhirong ; Zhou, Gang ; Wu, Jian ; Duan, Wenhui ; Jiang, Peng ; Jia, Jin-Feng ; Xue, Qi-Kun ; Gu, Bing-Lin ; Zhang, S. B.
	2010-10-12 ; 2010-10-12
关键词	ADSORPTION OXIDATION HYDROGEN ENERGY BOND Physics, Condensed Matter
中文摘要	We investigate the dissociation of O-2 on Pb(111) surface using first-principles calculations. It is found that in a practical high-vacuum environment, the adsorption of molecular O-2 takes place on clean Pb surfaces only at low temperatures such as 100 K, but the O-2 easily desorbs at (elevated) room temperatures. It is further found that the Pb adatoms enhance the molecular adsorption and activate the adsorbed O-2 to dissociate during subsequent room-temperature annealing. Our theory explains the observation of a two-step oxidation process on the Pb surfaces by the unique role of Pb adatoms.
语种	英语 ; 英语
出版者	AMER PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81521]
专题	清华大学
推荐引用方式 GB/T 7714	Yang, Yu,Li, Jia,Liu, Zhirong,et al. Activated dissociation of O-2 on Pb(111) surfaces by Pb adatoms[J],2010, 2010.
APA	Yang, Yu.,Li, Jia.,Liu, Zhirong.,Zhou, Gang.,Wu, Jian.,...&Zhang, S. B..(2010).Activated dissociation of O-2 on Pb(111) surfaces by Pb adatoms..
MLA	Yang, Yu,et al."Activated dissociation of O-2 on Pb(111) surfaces by Pb adatoms".(2010).

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