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An Optimized Method for Electroless Pd Deposition

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã


Editorial: REV. CHIM. (Bucuresti), 59(12), p.1378 -1381, 2008.


An optimized electroless deposition procedure to form Pd membranes onto ceramic substrates involving
the thermal decomposition of a Pd complex compound ([Pd (NH3)4] [PdCl4]) is discussed. This allowed a
reaction efficiency of about 90-95%. The proposed method significantly diminishes the Pd wastes as compared
with the classical procedure involving hydrazine based reduction step. A Pd layer of about 3-5µm has been
uniformly deposited on the inner surface of the α-Al2O3 based substrate, being characterized by a very good
adherence and light grey metallic appearance. Homogeneous films of Pd were obtained by annealing the
deposited Pd layers at temperatures higher than 5000C in a hydrogen atmosphere. XRD and laser confocal
microscopy techniques have been proved to be suitable to characterize the composition, thickness and
uniformity of the formed Pd membranes.

Cuvinte cheie: palladium, electroless deposition, alumina membranes, Pd complex compounds