Interaction of a single water molecule with a single graphite layer: An integrated ONIOM study

Nurbosyn U. Zhanpeisov, Georgii M. Zhidomirov, Hiroshi Fukumura

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Integrated ONIOM calculations using the two- and/or three-layer model chemistries were applied to mimic the interaction of water with the basal graphitic layer of HOPG material. The high-level layer in the ONIOM approach is treated at the electron correlated second-order Moller - Plesset perturbation (MP2/6-31G*) level. On the basis of the results obtained, the formation of structural defect sites, molecular and dissociative adsorption complexes of water on a regular and on structural defect sites, the discrepancy in the nature of the surface O - H and C - H groups appeared on SWNT and HOPG materials has been briefly discussed. It was shown that the dissociation of water is highly endothermic on regular sites of HOPG while the energy needed for dissociation decreases substantially if it proceeds on structural defect sites. This finding points out indirectly that the dissociation probability of water increases on SWNT materials as compared to HOPG because of the presence of a larger number of structural defect sites.

本文言語English
ページ(範囲)6118-6123
ページ数6
ジャーナルJournal of Physical Chemistry C
113
15
DOI
出版ステータスPublished - 2009 4 16

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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