Photo-induced direct interfacial charge transfer at TiO2 modified with hexacyanoferrate(iii)

Tomomi Tatebe; Takashi Harada; Kazuhide Kamiya; Shuji Nakanishi

doi:10.1039/c8pp00237a

Photo-induced direct interfacial charge transfer at TiO₂ modified with hexacyanoferrate(iii)

Photochem Photobiol Sci. 2018 Sep 12;17(9):1153-1156. doi: 10.1039/c8pp00237a.

Authors

Tomomi Tatebe¹, Takashi Harada, Kazuhide Kamiya, Shuji Nakanishi

Affiliation

¹ Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.

PMID: 30101237
DOI: 10.1039/c8pp00237a

Abstract

Photo-induced electron-transfer reactions occurring at the interface between titanium dioxide modified with hexacyanoferrate(iii) (Fe(iii)-CN-TiO2) were characterized. After the modification of TiO2 with [Fe(CN)6]3- ions, a new absorption appeared in the visible light region (410 to 700 nm). Absorption spectroscopy measurements showed that Fe(iii)-CN-TiO2 was converted to Fe(ii)-CN-TiO2 under visible light irradiation (>520 nm), which indicates that the new absorption was assignable to direct charge transfer from the valence band to the modified Fe(iii) ions.