摘要：为了研究Fe³⁺掺杂TiO₂纳米粉体的制备工艺及性能,选取Fe₃₊掺杂量、浓硝酸、冰醋酸、煅烧温度等因素设计正交实验,利用溶胶-凝胶法制备Fe³⁺掺杂TiO₂纳米粉体,通过拉曼光谱、X射线衍射、透射电镜等检测技术对粉体性能进行表征。结果表明,与溶胶-凝胶法制备的纯TiO₂纳米粉体相对比,Fe³⁺掺杂TiO₂纳米粉体的X射线衍射峰强度降低,晶粒细化,拉曼光谱谱峰宽化、蓝移;对甲基橙溶液的降解实验表明Fe³⁺掺杂TiO₂纳米粉体光催化活性明显提高。

关键词：TiO₂纳米粉体；掺杂；溶胶-凝胶法；光催化

Abstract: To study the preparation technology and property of TiO₂nano-particles doped with Fe³⁺， the quantity of Fe³⁺， acetic acid， nitric acid and calcination temperature were chosen to design the orthogonal experiment. TiO₂ nano-particles doped with Fe³⁺ were prepared by sol-gel method. Raman speetra，XRD，TEM were used to characterize the samples. The results indicate that comparing with pure TiO₂ nano-particles prepared by sol-gel method，X ray diffraction peak intensity of TiO₂ nano-particles doped with Fe³⁺ decreases and the crystalline size decreases. Raman spectra has blue-shifting and broadening. Degradation rate of methyl orange solution show that the photocatalytic activity of TiO₂ nano-particles doped with Fe³⁺ significantly increases. 

Keywords：TiO₂ nano-particle； doping； sol-gel method； photocatalytic