摘要：为了研究掺杂铁的纳米二氧化钛的性质,以TiCl₄为原料,在CTAB/正丁醇/环己烷/水组成的微乳液体系中制备了掺杂铁的TiO₂纳米粉末。采用热分析仪(TG-DTA)、X射线衍射分析(XRD)、透射电子显微镜(TEM)和比表面分析仪(BET)等对粉体的结构、粒径大小、物相、形貌和比表面积等进行了表征。经600℃焙烧2h后,0.04%Fe³⁺-TiO₂粉末为单一的锐钛型结构,其平均晶粒度约为16nm,比表面积达120.4m2.g^-1,D101为16.1nm。由于在XRD图谱上未发现有新相的生成,因此,Fe³⁺经过焙烧渗入到了二氧化钛的晶格中,掺杂所引起的变化主要是由于Fe³⁺渗入TiO₂晶格所引起的。

关键词：微乳液法；纳米二氧化钛；掺杂

Abstract：Nanometer Fe³⁺-doped TiO₂ powder was obtained in microemu- lsion of CTAB/C4H10O/C₆H₁₂/H₂O with TiCl₄ to research the properties of Fe³⁺-doped nanometer TiO₂. The structure,particle size,specific surface- area,appearance and thermostable properties were analyzed by TG-DTA,XRD,TEM and BET. After calcination at 600 ℃ for 2 h, 0.04%Fe³⁺-TiO₂ powders show that the nanocrystalline TiO₂ with anatase phase,the average particle diameter is about 16 nm,SBET is 120.4 m²·g^-1 and D 101 is 16.1 nm. Because the new phase was not found from XRD analysis,the changes were probably induced by the infiltration of Fe³⁺ ion into TiO₂ crystal lattice.

Keywords：microemulsion method;nanometer TiO₂;doped