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利用X射线衍射谱、拉曼光谱和紫外-可见光吸收光谱研究了硼(氮、氟)掺杂对TiO2纳米颗粒光学性能的影响.X射线衍射谱和拉曼光谱结果表明,掺硼(氮、氟)对TiO2纳米颗粒的锐钛矿相晶体结构无明显影响,而其锐钛矿晶格出现畸变(c/a值增大),这被归因于掺杂原子对TiO2纳米颗粒表面氧原子缺位沿晶格c轴方向的占据.另外,掺硼(氮、氟)TiO2纳米颗粒吸收带红移与TiO2锐钛矿晶格畸变有关.
The effects of boron (nitrogen, fluorine) doping on the optical properties of TiO2nanoparticles were investigated by X-ray diffraction, Raman spectroscopy and UV-Vis absorption spectra.The results of X-ray diffraction and Raman spectroscopy showed that boron (nitrogen, Fluorine) had no significant effect on the anatase crystal structure of TiO2 nanoparticles, while its anatase lattice distortion (c / a value increased), which is attributed to the effect of doping atoms on the surface of TiO2 nanoparticles oxygen atoms The vacancy occupied along the c-axis of the crystal lattice.In addition, the red shift of absorption band of boron-doped (nitrogen, fluorine) TiO2 nanoparticles was related to the lattice distortion of TiO2 anatase.