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A series of Fe/TiO₂ catalysts with varying amounts of Fe (0.2–2.0 wt%) were prepared by doping of Fe on the surface of nano TiO₂. The XPS results revealed that Fe exists in Fe³⁺ state in a strong interaction with TiO₂. The strong absorption band for Fe/TiO₂ in the range of 440–575 nm infers the modification of TiO₂ surface with Fe dopant. N₂ adsorption, TEM and SEM studies proved that the catalysts are mesoporous with high surface area and nanosized particle in size (≈5 nm). Photocatalytic activity of the catalysts was evaluated for the generation of H₂ from water splitting under solar irradiation. Optimisation of Fe³⁺ ion doped over the surface of TiO₂ was studied, it is observed that 0.5 wt% Fe/TiO₂ catalyst exhibited enhanced hydrogen yield of 270 μmol-H₂/h activity, while un doped TiO₂ shows 2.8 μmol-H₂/h.The improved photocatalytic activity of Fe/TiO₂ can be attributed to …