KH550/纳米氧化铝复合材料对铀(Ⅵ)吸附研究

KH550/Nano-alumina Composite Material of Uranium(Ⅵ) Adsorption

本文以KH550为表面处理剂,对纳米Al2O3进行了表面改性,制备了一种新型纳米复合材料。以分光光度计为检测手段,在静态条件下,研究了改性纳米Al2O3对铀(Ⅵ)的吸附。探讨了溶液pH值、初始浓度、吸附时间等对铀(Ⅵ)吸附的影响,研究了吸附等温线。结果表明,改性纳米Al2O3在pH=6,吸附时间为1 h,铀初始浓度为2μg/mL时,对UO22+的吸附效果最佳;应用于实际水样中铀的吸附,效果较好。

In this paper,a new nanocomposite was prepared by surface modification of nano-Al2O3 with KH550 as the surface treatment agent.The adsorption of uranium(VI) on modified nano-Al2O3 was studied by spectrophotometer under static condition.Not only the effects of pH value,initial concentration and adsorption time on the adsorption of uranium(Ⅵ) were studied,but also the adsorption isotherms was studied.The results showed that the modified nano-Al2O3 had the best adsorption effect on UO22+when the pH was equal to 6,the adsorption time was 1 h,and the initial concentration of uranium was 2 μg/mL;the effect was better when it was applied to the actual water sample.