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Lanthanide-doped titanium dioxide layers as photocatalysts

机译:掺杂镧系元素的二氧化钛层作为光催化剂

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Films (~0.5 mg/cm~2) from TiO_2 doped with 1-10 mol% Ln~(3+) (Ln = La or Gd) are deposited on different types of substrates by spray-pyrolysis using ethylene glycol solutions of Ti~(4+)-Ln~(3+) citric complexes as starting material and O_2 as a carrier gas. The films are post-deposition heated at 500 ℃. Their phase composition, crystal structure, morphology, sorption ability and photocatalytic activity are studied. Aqueous solution of methylene blue is applied as a model pollutant. A film with 5 mol% La on Ti-coated stainless steel substrate shows significantly higher photocatalytic activity than the best performing samples produced from commercially available titania.
机译:掺杂有1-10 mol%Ln〜(3+)(Ln = La或Gd)的TiO_2薄膜(〜0.5 mg / cm〜2)通过使用Ti〜的乙二醇溶液喷雾热解法沉积在不同类型的基材上。以(4 +)-Ln〜(3+)柠檬酸络合物为起始原料,以O_2为载气。将膜在500℃下进行后沉积加热。研究了它们的相组成,晶体结构,形态,吸附能力和光催化活性。亚甲基蓝水溶液用作模型污染物。钛涂层的不锈钢基材上的La含量为5 mol%的薄膜显示出比由市售二氧化钛生产的最佳性能样品明显更高的光催化活性。

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