Characterization of TiO₂ surface following the modification with silane coupling agents

Abstract

Studies were conducted on the modification of titanium white surface using selected silane coupling agents. The effect of the concentration of the organic coupling agents was examined (0.5; 1 or 3 weight parts per 100 weight parts of TYTANPOL R-003, TYTANPOL R-211 or TYTANPOL R-213 preparation of titanium white). The dispersive properties were determined by an estimation of the particle size distribution curves and of the polydispersity index. Moreover, microscopic observations were conducted permitting to evaluate the surface morphology of the modified TiO 2 particles. The profiles of sedimentation in water were also determined for the titanium whites and the BET specific surface areas were determined. Selected samples of the modified and unmodified titanium whites were subjected to elemental analysis.

Influence of Selected Alkoxysilanes on Dispersive Properties and Surface Chemistry of Titanium Dioxide and TiO2–SiO2 Composite Material

“…Modification. Functionalisation of TiO 2 and TiO 2 -SiO 2 was performed using the so-called dry technique [41,42,61]. Surface modification of titanium dioxide and TiO 2 -SiO 2 composite material was carried out in a reactor of 500 dm 3 in capacity.…”

“…Particle morphology, grain size, crystalline phase, and surface chemistry of the solvothermal-derived TiO 2 can be easily controlled by regulating precursor composition, reaction temperature, pressure, solvent properties, and aging time [40]. Preparation of inorganic composite materials on laboratory scale allowed control of their physicochemical properties and also gives a possibility of their surface functionalisation with selected organic compounds [41,42].…”

Superhydrophobic flow channel surface and its impact on PEM fuel cell performance

“…The second-order cumulant b is known as the z-average diffusion coefficient [53]. The coefficient of the squared term c, when scaled as 2c/b 2 , is defined as PDI, which can range from 0 (monodisperse) to 1 ( polydisperse).…”