This article highlights comparative adsorption behavior and photocatalytic activity of TiO2 nanostructures (P25, nanorods and nanotubes) for degradation of eriochrome black-T dye (EBT) depending on their structural morphology and metal ions (Fe3+ and Pt4+) deposition. Enhancement in adsorption capacity (qmax) was observed due to impartment of extra positive charges by Fe3+ and Pt4+ impregnation and follow the order, Pt4+–P25–TiO2 (400μg/mg)>Fe3+–P25–TiO2 (344μg/mg)>P25–TiO2 (248μg/mg)>nanotubes (123μg/mg)>nanorods (69μg/mg). The Fe3+ and Pt4+ loaded TiO2 improved dye adsorption and degradation rate of EBT undergoing complete minerization to CO2 under UV light irradiation.