Mott Schottky analysis is very important in characterizing the PEC electrode for water splitting. For more information read our article, V. Srimurugan, C. G. Jothiprakash, R. Prasanth* Efficiency enhancement in a stoichiometrically stable CdS/TiO2 nanotube heterostructure electrode for sunlight-driven hydrogen generation. New J. Chem. 2021, 45 (29), 12838-12847.