Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
Photochem Photobiol Sci. 2018 Sep 12;17(9):1153-1156. doi: 10.1039/c8pp00237a.
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.
用六氰合铁(III)（Fe(III)-CN-TiO2）对二氧化钛进行修饰，对其发生的光诱导电子转移反应进行了表征。TiO2 用[Fe(CN)6]3-离子修饰后，在可见光区（410 至 700nm）出现新的吸收。吸收光谱测量表明，Fe(iii)-CN-TiO2 在可见光照射下（>520nm）转化为 Fe(ii)-CN-TiO2，这表明新的吸收可归因于价带到修饰的 Fe(iii)离子的直接电荷转移。
