Graphene oxide aerogel-supported Pt electrocatalysts for methanol oxidation

Graphene oxide aerogel (GOA) was prepared to serve as catalyst support for Pt nanoparticles for methanol electro-oxidation. Analyses by X-ray diffraction (XRD) and scanning electron microscopy (SEM) were conducted to physically characterize the Pt/GOA catalyst. The results show that Pt/GOA has a 3D macroporous structure, which can not only accelerate mass transfer but also provide a larger efficient surface area for methanol oxidation. The results of electrochemical tests reveal that Pt/GOA has an electrochemical surface area as large as 95.5 m(2) g(-1), and its peak current density toward methanol oxidation is as high as 876 mA mg(-1)Pt. (C) 2015 Elsevier B.V. All rights reserved.