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The development of novel and active photocatalysts to industrialize photocatalysis technology is still a challenging task. In this work, a novel method is presented to prepare TiO₂/SiO₂ NSs by covering SiO₂ nanospheres (NSs) with titanate-nanodiscs (TNDs) followed by calcination. In this regard, SiO₂ NSs are first synthesized and then TNDs are deposited on the SiO₂ NSs using a layer-by-layer deposition technique. The morphology of the prepared samples is analyzed via SEM and TEM analyses before and after the deposition. The analysis of metal (Cu, Pt, and Ni) loading on calcined TNDs/SiO₂ NSs reveals the highest specific surface area (109 m²/g), absorption wavelength extension (up to 420 nm), and photocatalytic activity for the Cu-loaded sample. In addition, studying the effect of metal content shows that loading 3% Cu leads to the highest photocatalytic activity. Finally, it is demonstrated that H₂S treatment can improve the photocatalytic activity by around 15%. These findings suggest the calcined TNDs/SiO₂ NSs are a versatile photocatalyst with potential applications in other processes such as hydrogen production and CO₂ valorization.