Abstract
The stability of the metal matrix nanocomposites Zn-TiO2, has been investigated with the aim of using them as catalysts and electrocatalysts for the degradation of pharmaceutical compounds. Nanocomposite thin films were obtained from the occlusion electrodeposition method, using pulsed reverse current electrolysis, from acidic zinc sulphate solutions, on a Ti support. The stability of the films is strongly dependent on the morphologic and structural characteristics of the materials. The formation of a protective layer, mainly composed of Zn4SO4(OH)6 and ZnSO4, is easier on the Zn-TiO2 films than on Zn electrodeposits and acts as barrier against further metal dissolution, proved by the absorption atomic analysis of the solution.
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