【摘要】 以钛酸丁酯为原料制备TiO₂粉体,在管式炉中600℃与NH₃经不同反应时间制备N-TiO₂粉体样品。通过X射线衍射、光电子谱和紫外-可见光谱对产物进行了表征。结果表明,制得的粉体为锐钛矿型结构,粒径约为20nm,氮进入到了TiO₂晶格部分取代了氧的位置,形成新的TiO_2-xN_x晶格。更多还原

【Abstract】 Nanoparticles of N-doped TiO₂ （N-TiO₂） were prepared using titanium dioxide nano-powders and ammonia calcined at a certain temperature of 600℃in pipe-still heater.The samples were modified by nitrogen doping in 3h,4h,5h respectively.The prepared powders were characterized by XRD,XPS and UV-Vis absorbance spectra.The results show that the crystal structure of N-TiO₂ is anatase,the average particle size is about 20nm and the optical absorption edge of powder is significantly extended from 387nm to about 520nm that is in the visible-light range.N partly takes the place of O in TiO₂ crystal lattice and forms a new TiO_2-xN_x crystal lattice.更多还原