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可见光活性的氮硫钒共掺杂二氧化钛的掺杂比例优化
Optimization of Nitrogen, Sulfur and Vanadium Co-Doping TiO2 with Visible-Light Photocatalytic Activity in Water

DOI: 10.12677/AEP.2014.41B008, PP. 47-52

Keywords: 光催化;二氧化钛;氮硫钒共掺杂
Photocatalytic Activity
, TiO2, Nitrogen, Sulfur and Vanadium Co-Doping

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Abstract:

本文通过溶胶凝胶法制备氮硫钒共掺杂的具有较高可见光催化活性的二氧化钛。并用均匀实验、二次多项式逐步回归分析和规划求解来使制备过程中氮、硫和钒的掺杂比例最优化。氮硫钒共掺杂可以使二氧化钛的带隙缩小至2.65~2.93 eV。在可见光(λ ≥ 400 nm)下照射3 h后,优化后的共掺杂二氧化钛催化剂对活性蓝的降解率最高可达90.40%

Nitrogen, sulfur and vanadium co-doped TiO2 photocatalysis with high visible light activities were synthesized through sol-gel process. Uniform design, quadratic multinomial stepwise regression analysis and programming solver were performed for co-doped TiO2 catalyst preparation optimization. The N, S and V co-doping narrowed band gap energy of TiO2 photocatalysis to the range of 2.65 to 2.93 eV. The photocatalytic degradation rate of reactive blue by optimal co-doped TiO2 catalyst was 90.40% in 3 h under visible light irradiation (λ ≥ 400 nm).



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