吸附
傅里叶变换红外光谱
吸附
解吸
离子强度
离子交换
化学
核化学
选择性
化学工程
无机化学
材料科学
离子
催化作用
有机化学
水溶液
工程类
作者
Yuan Fang,Chunfang Wu,Yawen Cai,Linjuan Zhang,Jianqiang Wang,Lanhua Chen,Xiangke Wang,Shitong Yang,Shuao Wang
标识
DOI:10.1016/j.cej.2017.03.156
摘要
In this study, the inorganic-organic hybrid of PA/TNTs was synthesized and characterized by using multiple analysis techniques. Batch experiments were conducted to investigate the removal performance of PA/TNTs towards U(VI). The sorption kinetics procedure achieved equilibrium within 6 h. The maximum sorption capacity at 293 K and pH 5.0 was calculated to be 1.16 × 10−3 mol/g. In addition, the PA/TNTs composite showed a higher sorption selectivity towards U(VI) over many other metal ions. The ionic strength experiments, desorption results, X-ray diffraction (XRD), solid fluorescence, extended X-ray adsorption fine structure (EXAFS) and Fourier transform infrared spectroscopy (FTIR) analysis suggested the predominant sorption mechanism was inner-sphere complexation rather than ion exchange or precipitation. Overall, the synthesized PA/TNTs composite could be utilized as a cost-effective material for the removal of U(VI) from wastewater.
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