Sonochemical synthesis of graphene oxide supported Pt-Pd alloy nanocrystals as efficient electrocatalysts for methanol oxidation
Bernaurdshaw Neppolian, Veronica Saez, Jose Gonzalez-Garcia, Franz Grieser, Roberto Gomez, Muthupandian Ashokkumar
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | SPRINGER | Published : 2014
Pt–Pd bimetallic nanoparticles supported on graphene oxide (GO) nanosheets were prepared by a sonochemical reduction method in the presence of polyethylene glycol as a stabilizing agent. The synthetic method allowed for a fine tuning of the particle composition without significant changes in their size and degree of aggregation. Detailed characterization of GO-supported Pt–Pd catalysts was carried out by transmission electron microscopy (TEM), AFM, XPS, and electrochemical techniques. Uniform deposition of Pt–Pd nanoparticles with an average diameter of 3 nm was achieved on graphene nanosheets using a novel dual-frequency sonication approach. GO-supported bimetallic catalyst showed significa..View full abstract
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Awarded by Spanish Ministry of Economy and Competitiveness through the Spanish-Indian bilateral project
Awarded by SERB, DST, New Delhi, India
We acknowledge financial support from the Australian Research Council (ARC). The financial supports of the Spanish Ministry of Economy and Competitiveness through the Spanish-Indian bilateral project PRI-PIBIN-2011-0816, and SERB (SR/FT/CS-127/2011), DST, New Delhi, India, are also gratefully acknowledged. Dr. Jose Gonzalez-Garcia passed away before this article could be submitted for publication. We want to express our appreciation for him being a great coworker and friend.