采用纳米金红石型TiO2为Ti源,水热法合成了Ti纳米晶须,将其表面负载磷酸三丁酯(TBP)制备出修饰Ti纳米晶须.用SEM、TEM及傅里叶红外光谱仪对Ti纳米晶须及修饰Ti纳米晶须的形貌和结构进行表征,分别研究了两种材料对铀离子的吸附性能,考察了修饰Ti纳米晶须吸附铀的动力学及等温吸附模型.电镜表征结果表明,水热温度为160℃成功合成出Ti纳米晶须,其粒径范围为80～100 nm.吸附铀研究结果表明,在3 mol/L NO3介质中修饰Ti纳米晶须表现出较高的吸附性能,修饰Ti纳米晶须对铀的吸附动力学模型符合准二级动力学,吸附等温线符合Langmuir和Freundlich等温吸附模型.将修饰Ti纳米晶须用于自来水中低浓度铀的回收,结果较好.
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