Titanate nanotubes were prepared by a rapid hydrothermal method in the presence of triethanolamine (TEA) using TiO2 nanoparticles as a precursor. The addition of TEA significantly reduced the formation time of the titanate nanotubes from 24 to 6 h. The crystalline structure of the titanate nanotubes was revealed to be H2Ti2O5 through the X-ray diffraction (XRD) measurement. The morphology of the titanate nanotubes was confirmed using transmission electron microscopy (TEM) while the surface area was characterized using Brunauer-Emmett-Teller (BET) surface area analysis. The titanate nanotubes produced were several hundred nanometers in length and had an average outer diameter of ~ 11.5 nm, inner diameter of ~5.0 nm, interlayer spacing of 0.93 nm and surface area of >250 m2/g. The photocatalytic activity of the titanate nanotubes was studied using methylene blue as a model dye; the titanate nanotubes showed better photocatalytic performance as compared to TiO2 nanoparticles.
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机译:在三乙醇胺(TEA)存在下,使用TiO2纳米粒子作为前体,通过快速水热法制备了钛酸盐纳米管。 TEA的添加将钛酸酯纳米管的形成时间从24小时显着减少到6小时。通过X射线衍射(XRD)测量显示钛酸酯纳米管的晶体结构为H 2 Ti 2 O 5。使用透射电子显微镜(TEM)确认钛酸酯纳米管的形态,同时使用Brunauer-Emmett-Teller(BET)表面积分析表征表面积。所产生的钛酸酯纳米管的长度为几百纳米,平均外径约为11.5 nm,内径约为5.0 nm,层间间距为0.93 nm,表面积大于250 m2 / g。以亚甲基蓝为模型染料研究了钛酸酯纳米管的光催化活性。与钛纳米颗粒相比,钛酸酯纳米管表现出更好的光催化性能。
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