Doped Ti-pillared clays as effective adsorbents - Application to methylene blue and trimethoprim removal

Montmorillonite was treated with Ti-based solutions doped with various transition metal cations, leading after calcination at 500 degrees C to new doped Ti-pillared montmorillonite solids. These solids were characterised by elemental chemical analysis, powder X-ray diffraction, Fourier-transform (FT)-IR spectroscopy, thermal analyses, nitrogen adsorption, acidity evaluation and electron microscopy. The performance of these solids in the degradation of methylene blue and the adsorption of trimethoprim was evaluated.