Work

Exploring Synthesis Methods of CdS/TiO2 Photocatalysts for Enhanced Hydrogen Production Under Visible Light

Year: 2025

Type: article

Abstract: TiO2 was synthesized via the sol–gel method and employed as a support material for the deposition of CdS nanofibers using two novel techniques: impregnation and photodeposition. XRD characterization shows that crystallite size decreases when CdS is incorporated into TiO2. UV-Vis spectroscopy showed that the bandgap of the CdS/TiO2 heterostructured nanocomposites decreases compared to the raw TiO2 support, making them very appropriate for photocatalytic applications in the visible region. The photocatalysts were tested for hydrogen production in methanol–water solutions under visible light conditions. It was observed that the TiC20 photocatalyst prepared by the impregnation method improved the photocatalytic activity compared with photodeposition technique (TiC20FD), achieving a maximum hydrogen production of 570.5 µmol H2 gcat−1 h−1, while the latter attained 383.4 µmol H2 gcat−1 h−1.

Source: Catalysts