采用化学沉淀法制备纳米TiO2-xNx粉体,使粉体的禁带宽度变窄,在可见光下表现出较高的抗茵率(32%).再采用浸渍法制备掺Fe的TiO2-xNx粉体,实现TiO2粉体的金属一非金属双掺杂.Fe-TiO2-xNx粉体在可见光下的抗茵率随着掺Fe量的增加呈先增加后减小的趋势,当掺杂量为0.5%(原子分数)时抗茵活性最高,达71%.
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