A facile development of highly efficient Pt-TiO 2 nanostructured films via versatile gas-phase deposition methods is described. The films have a unique one-dimensional (1D) structure of TiO 2 single crystals coated with ultrafine Pt nanoparticles (NPs, 0.5-2 nm) and exhibit extremely high CO 2 photoreduction efficiency with selective formation of methane (the maximum CH 4 yield of 1361 μmol/g-cat/h). The fast electron-transfer rate in TiO 2 single crystals and the efficient electron-hole separation by the Pt NPs were the main reasons attributable for the enhancement, where the size of the Pt NPs and the unique 1D structure of TiO 2 single crystals played an important role.
ASJC Scopus subject areas
- Colloid and Surface Chemistry