Si-doped TiO₂ nanoparticles were prepared by a hydrothermal method using acetic acid as the solvent. Effect of Si doping on the characterization of TiO₂ nanoparticles were studied  with X-ray powder diffraction (XRD), transmission electron microscope (TEM),  energy dispersive X-ray spectrocopy (EDX), fourier transform infrared spectra (FT-IR) and UV–visible diffuse reflection spectrum (DRS). In addition, the effect of Si doping on the photocatalytic activity of TiO₂ nanoparticles for the degradation of Rhodamine B as amodel pollutant under ultraviolet light irradiation were studied. So doping suitable amount of Si in TiO₂ nanoparticles was profitable for transferring photogenerated electrons and inhibiting the recombination of photogenerated electrons and holes. As a result, the photocatalytic activity of TiO₂ nanoparticles was improved. 

Tải file Ảnh hưởng sự pha tạp Si đến đặc trưng cấu trúc và hoạt tính quang xúc tác phân hủy Rhodamine B của hạt nano TiO2 tại đây