Supporting state of Pt nanoparticles on the Ar-ion-irradiated glassy carbon substrate

Kimata, Tetsuya*; Kato, Sho*; Yamaki, Tetsuya; Yamamoto, Shunya; Hakoda, Teruyuki; Kobayashi, Tomohiro*; Suzuki, Akihiro*; Terai, Takayuki*

Platinum (Pt) nanoparticles prepared by Pt-ion implantation in a glassy carbon (GC) substrate exhibited high durability as oxygen reduction catalyst. This result would originate from chemical and electronic interaction between the Pt atoms at the particle surface and the lattice defects in the GC substrate introduced by the ion implantation. We prepared Pt nanoparticles by RF magnetron sputtering on the Ar-ion-irradiated GC substrate, and then investigated the influence of Ar-ion irradiation on their supporting state of Pt nanoparticles. X-ray photoelectron spectroscopy demonstrated that the formation of the Pt-C bonding at the interface was promoted by the pre-deposition Ar-ion irradiation of the GC substrate.