Interaction of CO with Oxygen Adatoms on TiO2(110)
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- 作者：Junseok Lee ; Zhen Zhang ; Xingyi Deng ; Dan C. Sorescu ; Christopher Matranga ; John T. Yates ; Jr.
- 刊名：Journal of Physical Chemistry C
- 出版年：2011
- 出版时间：March 17, 2011
- 年：2011
- 卷：115
- 期：10
- 页码：4163-4167
- 全文大小：855K
- 年卷期：v.115,no.10(March 17, 2011)
- ISSN：1932-7455
文摘
The interaction between CO and O adsorbed on TiO2(110) has been investigated using scanning tunneling microscopy (STM), electron stimulated desorption (ESD), temperature programmed desorption (TPD), and density functional theory (DFT). Coadsorption of CO and O produces CO鈭扥 and CO鈭扥鈭扖O surface complexes via weak attractive interaction as revealed by STM and DFT. The effect of the adsorbates interaction can also be observed in two ensemble-averaged techniques, ESD and TPD, strongly supporting the STM and DFT results. The CO molecules adsorbed near chemisorbed O cause a 70% decrease in the O+ ion yield in ESD. The interaction between CO and O is considered to be electrostatic in nature due to the charge rearrangement upon chemisorption.