水热法制备Fe^(3+)/TiO_2复合粒子的最佳工艺条件

Optimal process conditions of hydrothermal synthesized Fe^(3+)/TiO_2 nanocomposite particles

以TiO2粉体为前驱体,采用水热法制备了Fe3+/TiO2复合粒子,并利用正交实验研究反应温度、掺铁量、反应时间、烧结温度和NaOH浓度对水热法制备Fe3+/TiO2复合粒子粒径大小的影响。利用透射电镜(TEM)、能量色散型X射线光谱仪(EDX)和X射线衍射仪(XRD)等对产物进行了表征。结果表明水热法制备Fe3+/TiO2复合粒子的最佳工艺条件为:NaOH溶液浓度为7mol/L,掺铁量为7%(摩尔分数),反应温度为170℃,反应时间为6h,烧结温度为400℃。

Fe3＋/TiO2 nanocomposite particles were successfully synthesized through hydrothermal treatment, and the effects of concentration of alkaline solution, reaction temperature, the Fe3＋ doping proportions, calcination temperature and time on the structure and microcosmic morphology of the samples were also studied by orthogonal experiment. The samples were characterized by transmission electron microscopy（TEM）, energy dispersive X-ray spectroscopy（EDX）and X- ray diffraction（XRD）. The results showed that the optimal reaction conditions of the best pattern were the concentration of sodium hydroxide solution of 7 mol/L, loading Fe o7 %, calcination temperature of 400℃, rection temperature and time of 170℃ and 6h respectively.