Photoelectrochemical Behavior of a Single Crystal n-TiO₂ Electrode in an Ionic Liquid

Abstract

Photoelectrochemical behavior of a single crystal n-TiO₂ electrode was investigated in a hydrophobic room temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA). The photoanodic current was observed on the TiO₂ electrode in BMPTFSA under irradiation of UV light. The flat-band potential was estimated from the onset potential of the photocurrent. The flat-band potential in neat BMPTFSA was different from that in BMPTFSA containing ferrocene.