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本文考察过渡金属离子对ＴｉＯ２光催化活性的影响，并对过渡金属离子对光催化剂ＴｉＯ２的调变作用机理进行了初步探讨。结果表明，加入Ｃｕ（Ⅱ）可以大大提高ＴｉＯ２的催化活性，反应７５ｍｉｎ，可使活性艳蓝Ｘ－ＢＲ的ＣＯＤｃｒ的去除率达７５％以上，对于活性艳红Ｘ－３Ｂ和活性艳黄Ｘ－６Ｇ的ＣＯＤｃｒ的去除率达到９０％以上。过渡金属离子的调变作用是由于低价的金属离子与Ｈ２Ｏ２作用生成·ＯＨ自由基所致。
This article examines the influence of transition metal ions on the photocatalytic activity of TiO2, and discusses the modulation mechanism of transition metal ions on the TiO2 photocatalyst. The results showed that the addition of Cu (Ⅱ) can greatly improve the catalytic activity of TiO2. After 75 min of reaction, the CODcr removal rate of reactive brilliant blue X-BR can reach over 75%. For reactive brilliant red X-3B and active brilliant yellow X- 6G CODcr removal rate of 90% or more. Modulation of transition metal ions is due to the role of cheap metal ions and H2O2 generated · OH free radicals.