BROWSE
Detail
Journal Article
Dissociative Chemisorption of Methanol on Ge(100)
Cited 36 time in 
Share 
Share
- Authors
- Sung-Soo Bae, Do Hwan Kim, An Soon Kim, Soon Jung Jung, Suk Lyun Hong, Se Hun Kim
- Issue Date
- 2007-10
- Citation
- The Journal of Physical Chemistry C, v.111, no.41, pp.15013-15019
- ISSN
- 1932-7447
- Publisher
- American Chemical Society(ACS)
- Language
- English
- Type
- Journal Article
- Abstract
- The adsorption of methanol (CH3OH) on Ge(100) surface has been studied using ultrahigh vacuum scanning tunneling microscopy (UHV - STM) and density functional theory (DFT) calculations. At low coverages, high-resolution experimental STM shows that methanol undergoes O - H bond dissociative adsorption on a single Ge - Ge dimer. As the methanol coverage increases to saturation, a series of dissociative adsorptions of methanol results in the formation of dimer row-based chainlike arrays. The DFT calculations show that, at room temperature, O - H bond dissociative adsorption is kinetically more favorable than C - O bond dissociative adsorption, although the final product of C - O bond dissociative adsorption is more stable geometry thermodynamically. From the results of our STM experiments and DFT calculations, we conclude that the adsorption structure of methanol on Ge(100) at room temperature has a H - Ge - Ge - OCH3 geometry as a result of O - H bond dissociative adsorption on a single dimer. © 2007 American Chemical Society.
- KSP Keywords
- Dissociative adsorption, Final product, H bond, High-resolution, Room-temperature, adsorption structure, density functional theory (DFT) calculations, dissociative chemisorption, ultrahigh vacuum scanning tunneling microscopy(UHV-STM)