著者

湯澤 哲夫 久保田 純 近藤 淳子 堂免 一成 廣瀬 千秋

出版者

The Surface Science Society of Japan

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.15, no.6, pp.359-363, 1994-08-10 (Released:2009-08-07)

参考文献数

23

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Coadsorption-induced recombination of surface hydroxyl species (OD(a)) on Ni (110) was verified by infrared reflection absorption spectroscopy (IRAS) and temperature programmed desorption (TPD). The O-D stretching mode of the surface hydroxyl species appeared at 2650 cm-1 at 173 K on D2O/ONi (110) surface. The hydroxyl species were thermally recombined and desorbed as D2O from the Ni (110) surface at 350 K. The recombination of the OD species to water (2731 and 2567 cm-1), was also observed at a lower temperature (117 K) when CO was coadsorbed. This OD recombination induced by CO adsorption is considered to result from a strong effect of coadsorbed CO, which lowers the reaction temperature from 350 to 117 K.

著者

久保田 純 堂免 一成

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.36, no.2, pp.74-79, 2014-02-10 (Released:2015-02-19)

参考文献数

9

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Hydrogen production by water splitting using photocatalysts under the solar irradiation is one of the artificial photosynthetic process to obtain sustainable hydrogen energy from water using photon energy. The solar energy conversion efficiency of powder photocatalysts has reached to ca. 0.3%, which is equivalent to that of general agricultural plants. For water splitting photocatalysts, surface modification with co-catalysts frequently plays as one of the important roles. In this manuscript, we discuss the function of surfaces of cocatalysts on semiconductor photocatalysts, which accept photogenerated carriers from the semiconductor and catalyze hydrogen or oxygen evolution reaction.

著者

Gordon M.Barrow著 大門寛 堂免一成訳

出版者

東京化学同人

巻号頁・発行日

1999