Author/Authors :
Feihui Li، نويسنده , , Yongqin Guo، نويسنده , , Yue Liu، نويسنده , , Haixia Qiu، نويسنده , , Xiying Sun، نويسنده , , Wei Wang، نويسنده , , Yu Liu، نويسنده , , Jianping Gao، نويسنده ,
Abstract :
Pt–Cu/reduced graphene oxide (Pt–Cu/RGO) hybrids with different Pt/Cu ratios were prepared by the reduction of H2PtCl6 and CuSO4 by NaBH4 in the presence of graphene oxide (GO). The Pt–Cu nanoparticles were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The reduction of GO was verified by ultraviolet–visible absorption spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. Compared to Pt/RGO, the Pt–Cu/RGO hybrids have superior electrocatalytic activity and stability for the oxidation of methanol and formic acid. Thus they should have potential applications in direct methanol and formic acid fuel cells.
