摘要
以钛酸丁酯为原料制备TiO_2粉体,在管式炉中600℃与NH_3经不同反应时间制备N-TiO_2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TiO_2晶格部分取代了氧的位置,形成新的TiO_(2-x)N_x晶格。
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 ,Sh 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 TiO2-xNx crystal lattice.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2007年第4期667-669,742,共4页
Bulletin of the Chinese Ceramic Society
关键词
二氧化钛
纳米粉体
光催化剂
氮掺杂
titanium dioxide
nano-powder
photocatalyst
nitrogen doping
