MA Yan-wen1, 2. Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions. New Carbon Mater., 2012, 27(04): 250-257. doi: 10.1016/S1872-5805(12)60016-X
Citation:
MA Yan-wen1, 2. Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions. New Carbon Mater., 2012, 27(04): 250-257. doi: 10.1016/S1872-5805(12)60016-X
MA Yan-wen1, 2. Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions. New Carbon Mater., 2012, 27(04): 250-257. doi: 10.1016/S1872-5805(12)60016-X
Citation:
MA Yan-wen1, 2. Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions. New Carbon Mater., 2012, 27(04): 250-257. doi: 10.1016/S1872-5805(12)60016-X
Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210046, China|
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China|
Funds:
National Natural Science Foundation of China (20833002, 20903057, 51172110), Research Fund for the Doctoral Program of Higher Education of China (20093223120002), Natural Science Foundation of Jiangsu Province (BK2010525, BK2011750), Foundation of Jiangsu Educational Committee (09KJB150007, 08KJB150011), and Scientific Research Foundation of Nanjing University of Posts and Telecommunications (NY208046, NY208025, NY208026).
Electrocatalysts of graphene-supported Pt-Co alloy nanoparticles (Pt-Co/G) were prepared by a simultaneous reduction of mixtures of graphene oxide and Pt(IV), Co(II) ions with ethylene glycol assisted by a microwave and further H2 treatment at 300 ℃. As-prepared Pt-Co/G catalysts were characterized by transmission electron microscopy, energy-dispersive X-ray spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy. The Pt-Co binary alloy nanoparticles with a size of 3-8 nm were homogeneously dispersed on the graphene. Compared with the monometallic Pt/G and commercial Pt/C catalysts, the Pt-Co/G catalysts have a high stability and increased electrocatalytic activity that is conducive for the oxygen reduction reaction, suggesting their potential application in fuel cells.
DownLoad: