Abstract
Multifunctional materials based on iron substituted anionic clays and their derived mixed oxides owning specific porous
properties and textural characteristics are synthesized, characterized and tested as photocatalysts in the process of the azo-dyes
degradation from aqueous solutions. The features of X-ray diffraction patterns point out the modification of the lattice parameters
when Fe3+ is substituted Al3+ in the brucite like layer. N2 adsorption-desorption analysis reveals specific porous properties
(surface area and pore volume) for the mixed oxides derived from iron containing anionic clays. The porosity of the samples is
the key parameter for defining their high degradation activity of two industrial azo dyes: drimaren red (DR) and nylosan navy
(Nyl) from water solutions, under UV irradiation. The results presented here open new perspectives for toxic dyes removal from
polluted water by using cost effective and biocompatible materials, type anionic clays.