Methanol-tolerant carbon aerogel-supported Pt–Au catalysts for direct methanol fuel cell

Pt–Au nanoparticles supported on carbon aerogel, namely 2:1 has been synthesized by the microwave-assisted polyol process. The structure of Pt–Au nanoparticles is characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The electrochemical property of Pt–Au catalysts for methanol oxidation is evaluated by cyclic voltammetry (CV). The results show that Au-modified Pt catalysts exhibit a high methanol tolerance and improved electrochemical catalytic activity, suggesting that carbon aerogel supported Pt–Au catalysts are better catalysts for the electrochemical oxidation of methanol than conventional Pt catalysts.

► A novel catalyst Pt–Au (2:1)/carbon aerogel has been synthesized.
► PtAu is well dispersed on carbon aerogel and has a narrow size distribution.
► Au-modified Pt catalysts exhibit a high methanol tolerance.
► Carbon aerogel supported Pt–Au catalyst is a good catalyst for methanol oxidation.