色谱2018，Vol.36Issue(3)：222-229,8.DOI:10.3724/SP.J.1123.2017.11038
季铵功能化的金属有机骨架对水中双氯芬酸钠的高效吸附与去除
Efficient adsorption and removal of diclofenac sodium from water with quaternary ammonium functionalized metal-organic frameworks
摘要
Abstract
A quaternary ammonium functionalized MIL-101(Cr)named MIL-101(Cr)-NMe 3was synthesized and explored as a novel adsorbent for the fast removal of diclofenac sodium(DCF) in water. The adsorption process of kinetics,adsorption isotherms,thermodynamics,and adsorbent regeneration were investigated. And the effects of key parameters such as pH value and ionic strength on the adsorption of DCF were also studied. The results showed that the adsorption of DCF on MIL-101(Cr)-NMe3was very fast. Most of DCF were adsorbed in the first 30 min. The adsorption kinetics of DCF on MIL-101(Cr)-NMe 3obeyed pseudo-second-order kinetics. The adsorption isotherms of DCF on MIL-101(Cr)-NMe3fitted well to the Langmuir adsorption model. And the maximum adsorption capacity was 310.6 mg/g at 20 ℃. The analysis of the adsorption mechanism showed that the electrostatic interaction and π-π stacking interac-tion between DCF and MIL-101(Cr)-NMe3were responsible for the efficient adsorption. Regen-eration experiments indicated that the used MIL-101(Cr)-NMe3was recycled at least five times without significant loss of adsorption capacity. The fast adsorption kinetics,high adsorption capacity,and excellent reusability made MIL-101(Cr)-NMe3attractive for removal DCF from aqueous solution.关键词
金属有机骨架/双氯芬酸钠/吸附/去除Key words
metal-organic frameworks(MOFs)/diclofenac sodium/adsorption/removal分类
化学化工引用本文复制引用
隗玉,隗翠香,夏炎..季铵功能化的金属有机骨架对水中双氯芬酸钠的高效吸附与去除[J].色谱,2018,36(3):222-229,8.基金项目
天津市应用基础与前沿技术研究计划(15JCYBJC23800).Tianjin Research Program of Application Foundation and Advanced Technology(No.15JCYBJC23800). （15JCYBJC23800）
