以醋酸锌和氨水为原料,超声法制备出氧化锌中空柱,采用扫描电镜(SEM)、X射线衍射(XRD)、Uv-vis漫反射对纳米ZnO的形貌、结构进行了表征,以有机染料亚甲基蓝溶液为光催化反应模型降解物,考察纳米ZnO的光催化性能。结果表明:制备出的纳米氧化锌呈中空的柱形,长约2～3μm,直径约300nm,壁厚约40nm,结晶良好。当加入纳米ZnO为0.4g/L,光降解时间为75min,对亚甲基蓝溶液的降解率可达到99.08%。 The zinc oxide hollow column was prepared by ultrasonic method using zinc acetate and ammonia as raw materials. The morphology and structure of ZnO were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Uv-vis diffuse reflectance The dye methylene blue solution is the degradation product of the photocatalytic reaction model, and the photocatalytic activity of the nano-ZnO is investigated. The results show that the prepared ZnO nanoparticles have a hollow columnar shape with a length of 2 ~ 3μm, a diameter of about 300nm and a wall thickness of about 40nm. When adding nano-ZnO is 0.4g / L, photodegradation time is 75min, the degradation rate of methylene blue solution can reach 99.08%.