Abstract
Pd–Au nanoparticles supported by TiO2 fibers were fabricated and assembled into a porous medium. The 2–16nm Pd–Au nanoparticles were randomly dispersed in the titania nanofibers (da=117±68nm). X-ray diffraction patterns and X-ray photoelectron spectroscopy verified the formation of Pd–Au particles. Binding energy shifts were detected due to chemical bonding and reduction with hydrazine monohydrate. The fiber media with Pd–Au nanoparticles had greater reactivity in conversion of NO and CO gases than Pd monometallic catalyst alone, attributed to a lower activation energy of the reaction on the Pd–Au catalyst particles.
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