Hydrotalcite-type (HT) materials based on ZnAlO and MgAlO have been prepared and investigated by various physico-chemical method: IR, XRD, BET. It was found that the HT structure depended on the nature and the atom ratio of the metals. The adsorption ability of the materials was tested with the reactive dyes Red 3BA as a model compound. The results indicated that the materials with the HT structure and atom ratio of Me2+ /Me3+ = 3 : 1 calcinated at < 500o C have the highest dyes removal. That could be related with the chemical characterization. The surface and radius pore have a little effect on dyes absorption ability of the materials.
