以TiO2为基体,用N修饰Pb掺杂的TiO2进行改性,提高其光催化活性,0.5%(质量分数)Pb-N改性的TiO2,可将20 mg/L的甲基橙水溶液在35 min内完全降解.用扫描电镜、X射线衍射、X射线光电子能谱及紫外可见光谱进行了样品表征,并讨论了催化活性提高的机理:可能是改性样品中的Pb和N元素起到了协同作用,降低了TiO2的带隙能,提高了对可见光的吸收能力.
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