以Ti(SO_4)_2为钛源,采用常压微波法制备了纳米TiO_2,通过XRD衍射和扫描电镜(SEM)表征了样品的微观结构,并以刚果红为目标污染物,研究纳米TiO_2对其的吸附性能。研究结果表明,所制备样品为锐钛矿型TiO_2,晶粒尺寸为2.74nm,并团聚成孔状结构;在p H=10、刚果红初始浓度为50mg/L、振荡时间为2h的条件下,其对刚果红的吸附率可达97.11%。 TiO 2 was prepared by atmospheric pressure microwave method using Ti (SO 4) 2 as the titanium source. The microstructure of the sample was characterized by X-ray diffraction and scanning electron microscopy (SEM). Congo red as the target pollutant, The adsorption performance. The results show that the prepared sample is anatase TiO 2 with a grain size of 2.74 nm and agglomerated into a porous structure. Under conditions of p H = 10, congo red initial concentration of 50 mg / L and shaking time of 2 h , Its adsorption rate of Congo red up to 97.11%.