Résumé
The transfer of the photocatalytic process on organic substrates induces new challenges: substrates protection, photocatalyst fixation, and work at low temperature. To produce depolluting textiles, we develop hybrid composite coatings which insert commercial TiO2 nanoparticles into a silica matrix. Spontaneous porous films were obtained presenting promising results for air and water depollution. Materials were characterised degrading formic acid, methylene blue and toluene. Their stability was verified by ageing tests and controlled with many analytical techniques (MEB, NMR, XPS, ToF-SIMS, IR, colorimetry, contact angle).