Soft X-ray photoemission spectroscopy of water-adsorbed titanium dioxide surfaces

Katsube, Daiki*; Ono, Shinya*; Takayanagi, Shuhei*; Ojima, Shoki*; Maeda, Motoyasu*; Yoshida, Hikaru*; Nishi, Shizuka*; Yoshigoe, Akitaka ; Abe, Masayuki*

TiO $_{2}$ has been extensively studied because of high photocatalytic activity. However, the basic reaction process of photocatalysis has not been understood yet. In this study, the difference in water adsorption reaction between rutile and anatase was clarified using synchrotron radiation soft X-ray photoelectron spectroscopy (XPS). The OH component observed at the higher binding energy side was clearly confirmed in the rutile type TiOTiO $_{2}$ , suggesting that the rutile type is more reactive to water adsorption.

Language	:	Japanese
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Meeting title	:	2019年第80回応用物理学会秋季学術講演会
Held date	:	2019/09
Location (city)	:	札幌
Location (country)	:	日本
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Keywords	:	放射光光電子分光; TiO2; 光触媒; 表面分析; 表面化学反応
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : BB20191187
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