| 초록 |
The Nb-doped TiO2 hollow capsule ball (Nb-TiO2) was prepared as a support of metallic catalyst in Direct Methanol Fuel Cell (DMFC). Firstly, we prepared the functionalized polystyrene ball as core ball (~500nm). Subsequently, the PS/Nb-TiO2 core-shell particle was prepared by sol-gel reaction in the presence of Nb ion. After then, the prepared core-shell ball was annealed at 500oC under air atmosphere in order to remove the core ball. In order to prepare electocatalyst, we deposited the Pt-Ru nanoparticle on the surface of Nb-TiO2 by gamma-irradiation. We are going to evaluate the prepared Pt-Ru@Nb-TiO2 via TEM, XPS,electrocatalytic efficiency for CO and MeOH. |
