Electrocatalysis of Sandwich-Structured Pd/Polypyrrole/Pd Composites towards Formic Acid Oxidation

Tuesday, October 18, 2011: 2:05 PM
L100 J (Minneapolis Convention Center)
Suying Wei1, Haitao Jia2, Keqiang Ding2 and Zhanhu Guo3, (1)Chemistry and Biochemistry, Lamar University, Beaumont, TX, (2)College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, China, (3)Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX

Palladium (Pd) nanoparticle catalysts were electrodeposited onto a graphite electrode by cyclic voltammetry (CV) technique from a 0.5 M HCl solution containing 0.2 M PdCl2, and then a film of polypyrrole (PPy) was immobilized onto the as-prepared Pd-coated graphite electrode, leading to a PPy/Pd-coated electrode. Pd particles were repeatedly electrodeposited on the PPy/Pd-coated electrode to generate a Pd/PPy/Pd sandwich structured composite coated electrode. This developed composite electrode showed a satisfactory electrocatalysis toward the formic acid oxidation (FAO). The catalysis mechanism of the sandwich structured Pd/PPy/Pd composite catalyst towards FAO was also discussed based on the obtained cyclic voltammograms and FT-IR spectra.

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See more of this Session: Composites for Energy Applications
See more of this Group/Topical: Materials Engineering and Sciences Division