In situ measurements of the desorption of water from a TiO 2 surface under dry rir by collecting the photoemission yield with an open counter

Daisuke Yamashita, Atsushi Ishizaki, Tomoyuki Yamamoto

研究成果: Article

6 引用 (Scopus)

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We investigated the desorption of water from a TiO 2 surface under a dry atmosphere by collecting the photoemission yield spectra with an open counter. For this purpose, a new attachment for the photoemission yield measurement was prepared. This apparatus is capable of detecting, in the open air, low-energy electrons excited by photons under dried atmospheres; the dew point is below-35°C. A significant change in the photoemission yield spectra due to exposure to a dry atmosphere was observed. To gain a better understanding of these results, observations of the change in the photoemission yield spectra caused by the thermal desorption of adsorbed water were also carried out. The results are consistent with those obtained by exposure to a dry atmosphere. Based on the relationship between the photoemission yield and the thickness of the water layer, the time dependence of the change in the thickness was explained by the second-order reaction rate equation.

元の言語English
ページ(範囲)575-579
ページ数5
ジャーナルAnalytical Sciences
30
発行部数5
DOI
出版物ステータスPublished - 2014

ASJC Scopus subject areas

  • Analytical Chemistry

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