Abstract
Different types of aqueous TiO 2–P25 suspensions were prepared and their properties, including rheological behaviour and zeta potential, were studied. Then, TiO 2 suspensions were used to elaborate TiO 2 coatings on various substrates (cordierite monolith, stainless steel plates and β -SiC foam) using a dip-coating method. The relationship between the suspension stability and the coating adhesion has been considered. The structural and morphological characterisation of TiO 2 coatings has been performed using scanning electron microscopy, X-ray diffraction and other methods. Finally, the photocatalytic properties of the materials have been determined by studying the photooxidation of aqueous ammonia.
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