Study on the Surface Modification of Nano-TiO2

KH550 modified ZnO/TiO2 was prepared. The surface of nano-TiO2 was coated with ZnO derived from Na2Zn(OH)4 via a heterogeneous nucleation process, and coupling agent KH550 was used to treat the surface of ZnO/TiO2. Transmission electron microscopy (TEM), X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and Optical contact angle measuring instrument were used to characterize the effect of surface modification. The results showed that the surface of nano-TiO2 was coated by ZnO nanoparticles; After modified by the KH550, the modified ZnO/TiO2 showed better dispersion in water-toluene solution; and the surface of modified ZnO/TiO2 became more hydrophobic-lipophilic than that of modified uncoated nano-TiO2.