Density-functional study for the NOx (x = 1, 2) dissociation mechanism on the Cu(1 1 1) surface

Mei Yin Yen, Jia Jen Ho*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

21 引文 斯高帕斯(Scopus)

摘要

Spin-polarized density functional theory calculation is employed to study the adsorption and dissociation of NO2 molecule on Cu(1 1 1) surface. It is shown that the most favorable adsorption structure is the NO2 (T,T-O-,O′-nitrito) configuration which has an adsorption energy of -1.49 eV. The barriers for step-wise NO2 dissociation reaction, NO 2(g) → N(a) + 2O(a), are 1.05 (for O-N-O bond activation), and 2.08 eV (for N-O bond activation), respectively, and the entire process is 0.6 eV exothermic. The energetics of single N-O dissociation with and without the presence of N atom or O atom on the surface are also calculated. The results indicate that in the presence of O atom on Cu(1 1 1) surface would raise the N-O dissociation barrier, whereas in the presence of N atom decrease it. The interaction nature between adsorbates and substrate is analyzed by the local density of states (LDOS) calculation.

原文英語
頁(從 - 到)300-306
頁數7
期刊Chemical Physics
373
發行號3
DOIs
出版狀態已發佈 - 2010 八月 3

ASJC Scopus subject areas

  • 物理與天文學 (全部)
  • 物理與理論化學

指紋

深入研究「Density-functional study for the NO<sub>x</sub> (x = 1, 2) dissociation mechanism on the Cu(1 1 1) surface」主題。共同形成了獨特的指紋。

引用此