采用改进的化学沉积法,用ZnO对TiO2-纳米管进行改性,制备ZnO/TiO2-纳米管的复合半导体材料.用X 射线衍射仪、透射电镜、高分辨透射电镜、X 射线能谱仪、比表面分析仪,紫外-可见光度计等研究样品的结构、表面形貌和化学组成.通过光降解甲基橙模拟污染物考察其光催化性能,并探讨ZnO粒子表面修饰增强TiO2-纳米管光催化活性的机制.结果表明:n(Zn)-n(Ti)为1-4的ZnO/TiO2-纳米管复合材料具有最佳的光催化活性;Zn和Ti的协同效应改善了复合材料的可见光响应性.
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