Electrochemistry of Colloidal Palladium an Experimental Study of Sol Formation and Electrocatalysis

Andre M.T. van der Putten, Jan Willem G. de Bakker, Lambertus G.J. Fokkink

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The formation of small palladium colloidal particles in aqueous solution by electroless reduction of palladium salts is described. The presence of water-soluble polymers, such as polyvinylalcohol (PVA) and polyvinylpyrrolidone improves the colloid-chemical stability of the sols. The formation of the colloidal particles can be easily monitored by open-circuit potential measurements. PVA-stabilized Pd sols are highly catalytic for electroless Ni deposition. They readily induce electroless Ni plating on indium tin oxide substrates, where more classical initiation procedures fail.

Original languageEnglish
Pages (from-to)3475-3480
Number of pages6
JournalJournal of the Electrochemical Society
Issue number12
Publication statusPublished - 1 Jan 1992
Externally publishedYes

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