N2 Desorption in the Decomposition of Adsorbed N2O on Rh(110)

Suwen Liu, Hideyuki Horino, Anton Kokalj, Izabela Irena Rzeznicka, Kenji Imamura, Yunsheng Ma, Ivan Kobal, Yuichi Ohno, Atsuko Hiratsuka, Tatsuo Matsushima

研究成果: Article査読

35 被引用数 (Scopus)


The decomposition of N2O(a) was studied on Rh(110) at 95-200 K through the analysis of the angular distributions of desorbing N2 by means of angle-resolved thermal desorption. N2O(a) was highly decomposed during the heating procedures, emitting N2(g) and releasing O(a). N2 desorption showed four peaks, at 105-110 K (β4-N2), 120-130 K (β3-N 2), 140-150 K (β2-N2), and 160-165 K (β1-N2). The appearance of each peak was sensitive to annealing after oxygen adsorption and also to the amount of N2O exposure. The β1-N2 peak was major at low N 2O exposures and showed a cosine distribution. On the other hand, β2-N2 and β3-N2 on an oxygen-modified surface revealed inclined and sharp collimation at around 30° off the surface normal in the plane along the [001] direction, whereas β4-N2 on a clean surface collimated at around 70° off the surface normal, close to the [001] direction. An inclined or surface-parallel form of adsorbed N2O was proposed as the precursor for inclined N2 desorption.

ジャーナルJournal of Physical Chemistry B
出版ステータスPublished - 2004 3月 25

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学


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