偕胺肟基与金属有机骨架UiO-66对水中铀吸附协同作用的研究  

Synergistic Effect of Amidoxime Group and Metal-organic Framework UiO-66 on Uranium Adsorption in Water

作　　者：殷晓慧 刘建明[1,2] 熊振湖 YIN Xiaohui;LIU Jianming;XIONG Zhenhu(Tianjin Key Laboratory of Aquatic Science and Engineering;School of Environmental and Municipal Engineering,TCU,Tianjin 300384,China)

机构地区：[1]天津城建大学天津市水质科学与技术重点实验室,天津300384 [2]天津城建大学环境与市政工程学院,天津300384

出　　处：《天津城建大学学报》2018年第3期213-218,224,共7页Journal of Tianjin Chengjian University

基　　金：天津市水质科学与技术重点实验室开放基金(TJKLAST-PT-2016-04)

摘　　要：为了探究偕胺肟基和金属有机骨架UiO-66对于水中铀吸附的协同作用,在研究相关文献的基础之上首次合成了偕胺肟基修饰的金属-有机框架UiO-66(UiO-66-AO).傅里叶变换红外光谱图证实了UiO-66-AO的成功合成,并对其进行了热重分析.通过批次实验,研究了接触时间、pH、固液比、温度和初始铀离子浓度对于吸附的影响.吸附实验表明,UiO-66-AO展现出对铀的有效吸附,拓宽了最高吸附容量的pH范围,准二级动力学模型和Freundlich等温模型更好地拟合了实验数据.In order to explore the synergistic effect of amidoxime group and metal-organic framework UiO-66 on the adsorption of uranium in water, metal-organic framework UiO-66 functionalized by amidoxime group（UiO-66-AO） was synthesized on the basis of the relevant basis of the literature for the first time. Fourier transform infrared spectroscopy confirmed the successful synthesis of UiO-66-AO and thermogravimetric analysis was carried out. The effects of contact time, pH, solid-liquid ratio, temperature and initial uranium concentration on adsorption were studied by batch experiment.Adsorption experiments showed that UiO-66-AO exhibited an effective adsorption of uranium, the pH range of the highest adsorption capacity was broadened, pseudo-second-order kinetics model and Freundlich isothermal model were well fitted to the experimental data.

关 键 词：偕胺肟基 UiO-66 修饰 铀(Ⅵ) 吸附 

分 类 号：P746.2[天文地球—海洋科学]