INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Alloying and surface composition of model Pd-Ag films synthesized by electroless deposition
Autor/es:
A. TARDITI, M. L. BOSKO, L. M. CORNAGLIA
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 37 p. 6020 - 6029
ISSN:
0360-3199
Resumen:
PdAg model films and real composite membranes were prepared by sequential electrolessdeposition on top of porous stainless steel supports. Their surface properties were investigatedby X-ray photoelectron spectroscopy (XPS), Angle resolved XPS and sputteringdepth profile. It was shown that the surface of the alloy was strongly enriched in silverafter the annealing treatment up to 500 C on hydrogen stream. A relationship between theAg 3d5/2 core-level binding energy shift and the silver surface composition was observedfrom the XPS data obtained with the model samples. The surface composition of realmembranes after both hydrogen permeation and reaction experiments showed silverenrichment, in agreement with the data obtained from the model sample.
