采用气相扩散火焰燃烧合成铁掺杂TiO2纳米晶,研究了铁掺杂TiO2纳米晶在可见光辐照下降解罗丹明B的活性,探讨了可见光染料敏化光催化机理.Fe3+掺杂可显著提高TiO2纳米晶的可见光催化活性,Fe3+最佳掺杂摩尔分数为0.12%.经过铁掺杂改性后,Fe3+的3d电子也可被可见光激发引发光催化反应,从而促进整个染料敏化光催化降解过程.
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