POLY 89 |
| The electrochemical uptake and reduction of PdCl42- and PdCl62- to produce polyaniline/palladium (PANI/Pd) composites is examined. The dispersion of Pd into the polymer is accomplished using the normal anion doping of the polymer at positive potentials. Reduction of the Pd anions occurs as the potential is cycled to more negative potentials. The composites produced using the two different Pd anions are characterized using cyclic voltammetry and SEM. The results indicate that mesoporous nanostructures of Pd can be deposited electrochemically on PANI using PdCl42-. The PANI/Pd composite has Pd spikes that are ~125 nm long with a tip diameter of ~10 nm. In contrast, PdCl62- produces a Pd encapsulated polymer without visible mesoporous structures. The results demonstrate that high surface area deposits of Pd are possible on PANI producing PANI/Pd composites. |
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General Papers
2:00 PM-4:20 PM, Sunday, April 6, 2008 Hilton New Orleans Riverside -- Grand Salon 4, Oral
Division of Polymer Chemistry |