Photocatalytically active TiO2 P25 nanoparticles, widely used for practical applications, were investigated. The nominal size of TiO2 P25 nanoparticles is 21 nm, but they easily agglomerate in aqueous media, depending on pH and ionic strength. TiO2 P25 aqueous dispersions were stabilized by cationic Gemini surfactant. The optimal conditions required to obtain stable dispersions, without formation of large agglomerates, were experienced.
COBISS.SI-ID: 13555990
Diffuse SAXS is caused by inhomogeneity in the electron density distribution of a material and is often attributed to the existence of microvoids in polymers. The content, dimensions and relative surfaces of the microvoid system can be determined thereby. The dimensions of the coherently scattering domains and the sizes of the inhomogeneities are related by the form factor. Changes in this factor highlight structural changes in polymer fibers caused by different treatments. In the paper the microvoid system of differently treated PET and PP fibers were studied.
COBISS.SI-ID: 2351728