水热法制备一维Ti-O纳米材料的性能与表征

Preparation and Characterization of One Dimensionals Ti-O Based Nanomaterial by Hydrothermal Method

本文采用水热法成功制备出了一维Ti-O纳米材料,研究了不同碱浓度,不同热水处理温度对纳米带形貌的影响,得到了一维Ti-O纳米材料最佳的制备工艺。结果显示,热水处理温度为180℃、碱的浓度为10 mol/L,热处理48 h可以得到Na2Ti3O7、H2Ti3O7和TiO2纳米带。纳米带的形成机制为"溶解-结晶"机制。制得的纳米带产物产率高,质量好,其宽度为50～200 nm,长度达到几十微米,有的纳米带甚至能够达到一百多微米,表面洁净,结晶良好,无缺陷。最后对温度对产物形貌的影响进行了讨论。

One dimensional Ti-O based nanostructure has been prepared successfully using hydrothermal synthesis method. The effects of different alkalinity, treatment temperature on morphology of nanobehs have been investigated. The results demonstrated that NazTi3 07, H2Ti307 and TiO2 nanobehs had been obtained in the condition of treatment temperature is 180 ℃ and alkalinity is 10 mol/L for 48 h heat treatment. The formation mechanism of nanobehs is＂ dissolution and crystallization＂. The nanobelts have the characteristics of high product yield, good quality, width is 50-200 nm, length up to tens of micron. Some even reach over 100 μm in the length, the surface is clean, good crystallization and defect free. Finally, the effect of temperature on morphology of nanobelts has been discussed