J. Phys. Chem. C 2007, 111, 3171-3174
3171
Novel Anode Catalyst Containing Gold Nanoparticles for Use in Direct Methanol Fuel Cells Koji Matsuoka,† Kohei Miyazaki,† Yasutoshi Iriyama,† Kenji Kikuchi,‡ Takeshi Abe,† and Zempachi Ogumi*,† Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto UniVersity, Katsura, Nishikyo-ku, Kyoto 615-8510 Japan, and Engineering Graduate School, The UniVersity of Shiga Prefecture, Hikone City, Shiga 522-8533 Japan ReceiVed: August 23, 2006; In Final Form: December 19, 2006
Gold nanoparticles of ca. 4 nm in diameter were deposited on a Pt-Ru/C catalyst by the gas-phase grafting method, and the electrocatalytic activities of Pt-Ru/C and gold nanoparticles deposited on a Pt-Ru/C catalyst in the electrooxidation of methanol and CO were studied. The deposition of gold nanoparticles on Pt-Ru/C enhanced its electrocatalytic activity for methanol oxidation at a lower potential region (
