Preparation and Characterization of Pd-Black Films for Electrocatalysis


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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.



Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho




M. C. F. Oliveira, "Preparation and Characterization of Pd-Black Films for Electrocatalysis", Materials Science Forum, Vols. 514-516, pp. 456-459, 2006

Online since:

May 2006




[1] A. Polcaro, S. Palmas, S. Dernini: Ind. Eng. Chem. Res. Vol. 32 (1993), p.1315.

[2] S.J. Cleghorn, D. Pletcher: Electrochim. Acta Vol. 38 (1993), p.425.

[3] A.N. Correia, L.H. Mascaro, S.A. Machado and L.A. Avaca: Electrochim. Acta Vol. 42 (1997), p.493.

[4] G. Power and I. Ritchie: Modern Aspects of Electrochemistr, y nº11 (Plenum Press, NewYork and London).

[5] A. Czerwinski, R. Marassi and S. Zamponi: J. Electroanal. Chem. Vol. 316 (1991), p.211.

[6] A. Czerwinski and R. Marassi: J. Electroanal. Chem. Vol. 322 (1992), p.373.

[7] S.S. Tavares, S. Miraglia, F. Fruchart. D.S. Santos: J. Alloys Comp. Vol. 347 (2002), p.10 a.