The deposition of TiO2 particles on Brazilian chrysotile fibres from aqueous dispersions was studied as a function of : (i) the amount of particles and fibres present in the system, (ii) the time of contact between the materials, (iii) the temperature and (iv) the ionic strength. Our results show that a large quantity of TiO2 is deposited on chrysotile and that the deposition does not depend on the concentration of the fibres. A steady-state deposition is reached after about 20 minutes of contact between the TiO2 and the chrysotile. In the absence of an inert electrolyte, classical temperature-independent high-affinity isotherms are obtained. The presence of an inert electrolyte yields a large increase in the TiO2 deposition above a threshold concentration of 2.5 g/l TiO2. We found that the TiO2 particles are strongly attached on the ckrysotile fibres. TiO2 supported on chrysotile showed catalytic activity in the photodecomposition of the phenyl group of sodium dodecylbenzene sulphonate.