南京工业大学学报（自然科学版）2023，Vol.45Issue(6)：639-646,8.DOI:10.3969/j.issn.1671-7627.2023.06.006
树脂基UiO-66复合材料的制备及其去除水中配位态重金属EDTA-Cu的性能
Fabrication of a polymer-based UiO-66 composite for the removal of EDTA-Cu coordination compounds from water
摘要
Abstract
A polymer-based UiO-66 composite(UiO-66@NDA)was fabricated by loading the metal-organic frame material UiO-66(Zr)into the pores of ultra high cross-linked amino adsorption resin(NDA-802)by in-situ growth method.The adsorption isotherm experiments,adsorption kinetics experiments,pH-influenced experiments,ion competition experiments and recycling regeneration experiments were carried out to investigate the purification performance of this new composite adsorbent for EDTA-Cu coordinated with Cu and ethylene diamine tetraacetic acid(EDTA)in water.Results showed that reducing reaction temperature was beneficial for EDTA-Cu adsorption on UiO-66@NDA,and the adsorption behavior was more consistent with the Freundlich model.This composite adsorbent could reach equilibrium within 300 min and its kinetic behavior was well fitted by pseudo-second-order model.pH value had a large effect on the adsorption,and UiO-66@NDA showed the best adsorption performance for EDTA-Cu when pH was 4.The concentrations of Cl-and NO3-that coexist in water had little effect on the adsorption of EDTA-Cu by UiO-66@NDA,while the increase of SO4 concentration had a greater inhibition on the adsorption of EDTA-Cu.When the 0.85 mol/L NaCl solution and 1.25 mol/L NaOH solution was employed as the regenerant,the composite adsorbent could be employed for repeated use after desorption.关键词
纳米复合材料/吸附/金属有机框架/UiO-66(Zr)/EDTA-CuKey words
nanocomposite/adsorption/metal organic frameworks/UiO-66(Zr)/EDTA-Cu分类
资源环境引用本文复制引用
罗在苒,桑敏,邢丽君,战志博,聂广泽..树脂基UiO-66复合材料的制备及其去除水中配位态重金属EDTA-Cu的性能[J].南京工业大学学报（自然科学版）,2023,45(6):639-646,8.基金项目
国家自然科学基金(22176096) （22176096）
江苏省自然科学基金(BK20221318) （BK20221318）
江苏省高校青蓝工程(2022) （2022）
国家级大学生创新创业训练计划(202210291012Z) （202210291012Z）
