Radiolytic loading of the Pt–Ru nanoparticles onto the porous carbons

This study was described that radiolytic loading of Pt–Ru nanoparticle onto porous carbons by using γ-irradiation for methanol-oxidation catalysts. The radiolytic loading of the Pt–Ru nanoparticles was follows: Method I. The porous carbons were synthesized against removal of colloidal silica crystalline templates by carbonization of poly(styrene) as carbon precursor. Subsequently, the Pt–Ru nanoparticles were loaded on the porous carbon by using γ-irradiation. Method II. The Pt–Ru alloy nanoparticle was loaded on the surface of SiO2 nanoparticles as template by γ-irradiation (Pt–Ru@SiO2). Subsequently, the Pt–Ru@SiO2 was fabricated in order to prepare the order porous carbon. Finally, the Pt–Ru nanoparticle/porous carbon was prepared by etching using HF after carbonation of poly(styrene). The catalysts prepared by Methods I and II were characterized by EF-TEM, FE-TEM, CO stripping, and methanol oxidation.