Enhanced photocatalytic hydrogen generation over ZrO2-TiO2-CdS hybrid structure.

Hybrid photocatalysts with suitable band structures are expected to show enhanced photocatalytic activity as compared to their constituent single phase compounds due to their improved physico-chemical properties. Here, we report an enhanced photocatalytic activity of a new composite photocatalyst comprising of ZrO2, TiO2, and CdS. This hybrid catalyst exhibits increased photocatalytic activity for hydrogen generation from water as compared to their constituent compounds.

A new route for the fabrication of an ultrathin film of a PdO-TiO2 composite photocatalyst.

Ultrathin PdO-TiO(2) composite films have been prepared for the first time by thermal decomposition of the multilayer Langmuir-Blodgett (LB) films of octadecyl amine-metal (Ti and/or Pd) ion complexes. The composite oxide film has been characterized by various spectroscopic techniques and compared with the pure ultrathin TiO(2) film. The results of X-ray diffraction (XRD) and Raman spectroscopy reveal the formation of a mostly crystalline anatase phase in the pure TiO(2) thin film whereas separate phases of PdO and TiO(2) in the composite thin film.

A rapid method for the synthesis of nitrogen doped TiO2 nanoparticles for photocatalytic hydrogen generation.

A facile, fast, and economic method of doping TiO2, synthesized by conventional precipitation route with N has been developed. By this method, stable N doped TiO2 can be prepared within a short duration of time. The method adopted was to treat the TiO2 powder synthesized by simple precipitation with trioctyl amine (TOA) at 320 degrees C for 2 hours followed by calcination at 400 degrees C for 2 hours to obtain the N-doped TiO2.