Consistent changes in electronic states and photocatalytic activities of metal (Au, Pd, Pt)-modified TiO2 studied by far-ultraviolet spectroscopy

Abstract

Absorption spectra (150–300 nm) of TiO₂ and TiO₂ modified with metal (Pt, Pd, and Au) nanoparticles were systematically measured using an attenuated total reflection–far ultraviolet spectrometer. The deposition of metal nanoparticles altered the spectral shape and intensity, indicating changes in the electronic states and photocatalytic activities of TiO₂.