PtRh@Pt5C/catalyst preparation for methanol electrooxidation

• Main Authors: Fang L., Guo X.X., Liu Y.P., Huang X.P., Saipanya S.
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-79957844823&partnerID=40&md5=ef30158c2d6df1e730d09e25e751ba07; http://cmuir.cmu.ac.th/handle/6653943832/6541
• Institution: Chiang Mai University

Bimetallic catalysts PtRh@Pt5/C with different deposit structures were prepared by force deposition followed calcination at 400°C and characterized by cyclic voltammetry (CV) combined with XRD. The activity of the obtained catalysts was examined in methanol electrooxidation by CV. It was found that PtRh@Pt5/C catalysts achieved higher catalytic activity and better tolerance to CO compared with Pt5/C. The surfaces of PtRh@Pt5/C derived from sandwich-like deposit structure was composed of crystallites and amorphous of PtRh alloys, showing exceptional catalytic activity in methanol oxidation with peak potential shifting 0.03V negatively and 90% increase in current density. © (2011) Trans Tech Publications.