A uniform heterojunction photocatalyst of FeTiO3/TiO2 composite (FTC) was synthesized by a facile hydrothermal
method. The structure, morphology, and spectral properties of FTC were characterized by X-ray
diffraction, Raman spectroscopy, transmission electron microscopy, and UV–Vis diffuse reflectance spectroscopy.
The FeTiO3 content can be easily tuned by tailoring the precursor amount. The FTC exhibits remarkable
photocatalytic activity on CO2 reduction to CH3OH under both visible and UV–Vis light irradiation, presumably
due to its unique band structures and the efficient charge transfer between two semiconductors as
well as the low band gap of FeTiO3.