In situ photoelectrocatalytic degradation behavior of methylene blue on Nano- TiO₂ modified electrode

The investigation of in situ photoelectrocatalytic degradation of the methylene blue (MB) molecules merged into a nano- Ti O2 modified film by electrochemical techniques is proposed. The methylene blue-Nafion- Ti O2 (MBNfTi O2) modified platinum electrode shows a reversible and faster electron-transfer efficiency in photoelectrocatalytic degradation reactions of surrounding compounds adsorbed on photocatalyst. Open-circuit potential (Eoc) of the MBNfTi O2 electrode shows that the MB molecules have an assured effect with transferred photogenerated electrons on the NfTi O2 interface under UV illumination. A linear regression equation is obtained by the cyclic voltammetry peak current of the residual MB and the reaction time in the degradation process, in which MB undergoes demethylation and CN bond breaking.