S SIAKI - Author Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran.
S.A Seyedsadjadi - Professor Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran.
m.a saadatinasab - Faculty of Science, Tarbiat Modares University

The present work was focused on the preliminary stage of palladium composite membrane preparation through electroless plating and the effects of bath hydrodynamic properties on the deposited layer morphology. Eight samples of palladium composite membrane were prepared which are different in terms of plating time, solution stirring rate and bath agitating mode. Scanning electron microscopy and Energy dispersive X-ray spectroscopy have been used for characterization of deposited layer. In comparison with the support rotating mode, the support fixing and the magnet rotating mode which is caused to running the solution towards the support is led to a deposited layer with better quality: larger grains of deposited layer, more compacted plating and higher plating efficiency.

palladium membrane, electroless plating, bath hydrodynamic, morphology