Preparation and Characterization of Pd-Black Films for Electrocatalysis

Maria Cristina F. Oliveira

doi:10.4028/www.scientific.net/MSF.514-516.456

Paper Titles

Investigations of Membrane Electrolytes for PEM Fuel Cell Applications
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Quality Control of Fuel Cells Channels
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Phase Separation on GaInAsSb Films for Thermophotovoltaic Devices
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Electrocatalytic Properties of La₂Mg₁₇ Based Metal Hydride Electrodes
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Preparation and Characterization of Pd-Black Films for Electrocatalysis
p.456

Structure and Electrochemical Characterization of Electrolytic Ni-Co-P and Ni-W-P Layers
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Electrochemical Production and Characterization of Ni-Mo, Ni-Mo-P and Ni+Mo Coatings
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Hydrophobic Porous Benzene-Silica Hybrid Clay Heterostructure and Its Application in the Adsorption of Volatile Organic Compounds
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Optimization of Deposition Parameters for Thin Silicon Films on Flexible Substrates in a Hot-Wire Chemical Vapor Deposition Reactor
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Preparation and Characterization of Pd-Black Films for Electrocatalysis

Abstract:

Spontaneously-deposited Pd-black films were prepared on a Ni mesh. Characterization of the films morphology was performed by Scanning Electron Microscopy. Cyclic voltammetry in 0.1 M NaOH was used to characterize the voltammetric profile in the H-adsorption/absorption region. Contrasting to smooth Pd, the results revealed that the H-adsorption peak can be detected using this electrode. It was found that the displacement metal reaction leads to codeposition of Ni during the Pd-black film preparation. The ability of these electrodes to be used on the electrohydrogenation of organic molecules was evaluated using 3-buten-1-ol as a test molecule. It was also analysed the stability of the electrodes upon reusing the same electrode in repetitive electrolysis. It was concluded that the films present a very good catalytic activity to electrohydrogenation but show poor adherence to the substrate when are re-used.