Abstract
Carbon supported Pd–Sn and Pd–Ru–Sn nanocatalysts were prepared by the chemical reduction method, using sodium borohydride and ethylene glycol mixture as the reducing agent. The catalytic activity towards ethanol electro-oxidation in alkaline medium was studied by cyclic, carbon monoxide stripping voltammetries and chronoamperometry. The current density obtained for the electro-oxidation was affected by varying ethanol concentration between 0.25 and 4 M. Raising ethanol concentration up to 3 M increased the coverage of the adsorbed ethoxy (CH 3CO ads) species on the nanocatalyst surface, thus yielding an increase in current density. Pd–Sn/C displayed better electrocatalytic activity and stability towards poisoning than Pd–Ru–Sn/C and Pt–Ru/C (E-TEK Inc.) nanocatalysts. Transmission electron microscopy results showed that Pd–Sn and Pd–Ru–Sn nanoparticles were uniformly dispersed on carbon support. The average particle size of Pd–Sn was 7 ± 0.5 nm in diameter while for Pd–Ru–Sn was 6 ± 0.7 nm.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
