Photocatalytic Activity of Pd-Au Alloy Nanoparticle Co-catalyst/TiO_2 for Acetic Acid Decomposition

摘要

A comparison of the photocatalytic activity on acetic acid (AcOH) decomposition with Pt nanoparticle (NP)-deposited, Pd NP-deposited and Pd-Au alloy NP-deposited TiO_2 will be reported in this paper. Pd and Au atoms were co-deposited on the TiO_2 surfaces via reductions of the photo-excited electrons under light irradiation. The composition, particle size, distribution and structures of the synthesized NPs were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). The photocatalytic experiments revealed that the CO_2 elimination rate in the decomposition of AcOH was enhanced on Pd-Au-deposited TiO_2 compared to the photocatalysts of pure TiO_2, Pt- and Pd-deposited TiO_2.