Beilstein J. Nanotechnol.2014,5, 162–172, doi:10.3762/bjnano.5.16
, University of Ottawa, 161 Louis-Pasteur St., Ottawa, ON, K1N 6N5, Canada 10.3762/bjnano.5.16 Abstract Three-dimensionally (3D) nanoarchitectured palladium/nickel (Pd/Ni) catalysts, which were prepared by atomic layer deposition (ALD) on high-aspect-ratio nanoporous alumina templates are investigated with
regard to the electrooxidation of formic acid in an acidic medium (0.5 M H2SO4). Both deposition processes, Ni and Pd, with various mass content ratios have been continuously monitored by using a quartz crystal microbalance. The morphology of the Pd/Ni systems has been studied by electron microscopy and
chemistry analysis by X-ray photoelectron spectroscopy showed both metallic and oxide contributions for the Ni and Pd deposits. Cyclic voltammetry of the Pd/Ni nanocatalysts revealed that the electrooxidation of HCOOH proceeds through the direct dehydrogenation mechanism with the formation of active
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Scheme 1:
Pd-catalyzed electrooxidation of HCOOH on Pd surfaces.