Synthesis of TiO2 nanotubes and photoelectrochemical analysis of the TiO2/Prussian blue interface

• We studied the surface modification of TiO2 NTs using iron (II) hexacyanoferrate.
• Photoelectrochemical characterization of the TiO2 NTs/Prussian Blue interface.
• An increase in the rate of the charge transfer process was observed between the TiO2 NTs/Prussian Blue interface using IMPS.

In this study, we examined the synthesis and the photoelectrochemical characterization of TiO2 nanotube semiconductor electrodes modified by Prussian Blue (PB) deposits. The PB formation was achieved using cyclic voltammetry. A morphological analysis of the TiO2 nanotubes and the TiO2/PB system was performed using scanning electron microscopy and transmission electron microscopy. Intensity Modulated Photocurrent Spectroscopy (IMPS) measurements were obtained with the goal of determining the charge transfer and recombination constant rates in these systems.