Visible light-response NaTa1−xCuxO3 photocatalysts for hydrogen production from methanol aqueous solution

Synthesis and characterization of visible-light-driven novel CuTa2O6 as a promising practical photocatalyst

In this work, the novel CuTa₂O₆ phase was successfully synthesized by the hydrothermal and followed by the calcination process. The X-ray diffraction pattern confirms the formation of different phases. At a low temperature, CuTa₂O₆ exhibits the orthorhombic phase, whereas, at a higher temperature, it underwent a phase transition to a cubic crystal structure. X-ray photoelectron spectroscopic results suggest the presence of all the elements (Cu, Ta, and O). The optical studies were carried out using a UV-Vis DRS spectrophotometer. FESEM images confirm the spherical-shaped particles for the sample annealed at a high temperature. The local atomic and electronic structures around Cu and the contribution of the Cu oxidation state in the CuTa₂O₆ system were determined by X-ray absorption spectroscopy. To investigate the effective usage of CuTa₂O₆ in treating wastewater, its photocatalytic activity was investigated by evaluating its use in the photodegradation of MO dye under visible light irradiation. Moreover, the prepared CuTa₂O₆ photocatalyst exhibits significant photocatalytic activity in the degradation of MO dye and shows excellent stability; it is therefore a promising material for potential use in a practical photocatalyst. The CuTa₂O₆ photocatalyst suggests an alternative avenue of research into effective photo-catalysts for solar hydrogen water splitting.

F–Bi4TaO8Cl flower-like hierarchical structures: controlled preparation, formation mechanism and visible photocatalytic hydrogen production

Hydrothermal method was employed to prepare the flower-like hierarchical structures of F–Bi₄TaO₈Cl for photocatalytic hydrogen production under visible light irradiation.

Inorganic perovskite photocatalysts for solar energy utilization

This review specifically summarizes the recent development of perovskite photocatalysts and their applications in water splitting and environmental remediation.

Tantalum-based semiconductors for solar water splitting

This review describes the current status of the design, synthesis, and applications of tantalum-based semiconductors, including tantalum oxides, tantalates and tantalum (oxy)nitrides, for photocatalytic and photoelectrochemical water splitting.