著者

佐藤 宏祐 杉本 敏樹

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.63, no.9, pp.476-481, 2020-09-10 (Released:2020-09-10)

参考文献数

19

被引用文献数

2

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Photocatalytic steam-methane reforming is an attractive chemical technology for hydrogen production from abundant resources of methane and water. In the case of photocatalytic reaction, photo-generated electron plays key roles in hydrogen production. However, the dynamics of photogenerated electrons under reaction condition have been unclear. To uncover the behavior of reactive photo-excited electrons, we conducted operando FT-IR spectroscopy of metal loaded Ga2O3 photocatalysts under irradiation of intensity modulated UV light. We succeeded in observing a correlation between the reaction activity and a broad mid-infrared absorption band derived from the photo-generated electrons shallowly trapped at the photocatalyst surfaces.