高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (10): 3091.doi: 10.7503/cjcu20210417

• 有机化学 • 上一篇    下一篇

阳离子共价有机框架对水中非甾体药物的强化去除

颜艳红1, 李舒晴2, 汤西豪2(), 郑盛润1,2, 蔡松亮1,2(), 章伟光1,2, 顾凤龙1   

  1. 1.华南师范大学化学学院, 环境理论化学教育部重点实验室
    2.华南师范大学化学学院, 广州市生物医药分析化学重点实验室, 广州 510006
  • 收稿日期:2021-06-18 出版日期:2021-10-10 发布日期:2021-10-10
  • 通讯作者: 汤西豪,蔡松亮 E-mail:20200243@m.scnu.edu.cn;songliangcai@m.scnu.edu.cn
  • 基金资助:
    广东省自然科学基金(2021A1515010211);广州市科技计划项目(202102020667);国家自然科学基金(22073032)

Cationic Covalent Organic Frameworks for the Enhanced Removal of Non-steroidal Anti-inflammatory Drugs from Water

YAN Yanhong1, LI Shuqing2, TANG Xihao2(), ZHENG Shengrun1,2, CAI Songliang1,2(), ZHANG Weiguang1,2, GU Fenglong1   

  1. 1.Key Laboratory of Theoretical Chemistry of Environment,Ministry of Education,School of Chemistry
    2.Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine,School of Chemistry,South China Normal University,Guangzhou 510006,China
  • Received:2021-06-18 Online:2021-10-10 Published:2021-10-10
  • Contact: TANG Xihao,CAI Songliang E-mail:20200243@m.scnu.edu.cn;songliangcai@m.scnu.edu.cn

摘要:

以三醛基间苯三酚(TFP)和溴化乙锭(EB)为单体, 在溶剂热条件下合成了一种二维β-酮烯胺类阳离子型共价有机框架(COF)材料. 所得TFP-EB COF呈现出良好的结晶度、 高的比表面积和丰富的溴化乙锭单元, 故可将其应用于水中非甾体抗炎药(NSAIDs)的去除.阳离子TFP-EB COF对双氯芬酸钠(DCF-S)和对氨基水杨酸钠(PAS-S)两种非甾体抗炎药表现出高的吸附能力和快的吸附动力学, 其饱和吸附容量分别可达350.4和145.3 mg/g. 而采用TFP与4,4'-二氨基联苯(BND)在类似条件下合成的中性TFP-BND COF则表现出较差的吸附性能, 其对DCF-S和PAS-S的饱和吸附容量分别仅有59.7和13.6 mg/g. TFP-EB COF的吸附性能比TFP-BND COF更优异, 这主要归因于TFP-EB COF孔道中存在的大量阳离子EB单元与NSAIDs中的羧基间存在强烈的静电作用. 此外, 竞争离子干扰和循环再生实验表明阳离子型TFP-EB COF在NSAIDs污染物的去除方面具有良好的应用前景.

关键词: 共价有机框架, 吸附, 非甾体抗炎药

Abstract:

1,3,5-Triformylphloroglucinol(TFP) and ethyl bromide(EB) were used as building blocks to synthesize a two-dimensional β-ketoenamine-linked cationic covalent organic framework(COF), namely TFP-EB COF, under solvothermal conditions. The obtained TFP-EB COF exhibits good crystallinity, high specific surface area and abundant ethidium bromide units, thus it can be applied as the adsorbent for the removal of non-steroidal anti-inflammatory drugs(NSAIDs) from aqueous solutions. Interestingly, the cationic TFP-EB COF can adsorb anionic NSAIDs such as diclofenac sodium(DCF-S) and p-aminosalicylate sodium(PAS-S) in water with fast adsorption kinetics and high adsorption capacity. The maximum adsorption capacities of TFP-EB COF for DCF-S and PAS-S are found to be 350.4 and 145.3 mg/g, respectively. In sharp contrast, the neutral TFP-BND COF synthesized by TFP and 4,4'-diaminobiphenyl(BND) under similar conditions shows poor adsorption ability toward DCF-S and PAS-S with maximum adsorption capacities of only 59.7 and 13.6 mg/g, respectively. The more excellent adsorption performance of TFP-EB COF than TFP-BND COF can be ascribed to the presence of strong electrostatic interaction between the EB units anchored in the TFP-EB COF channels and the carboxylate groups in NSAIDs. In addition, the ion competing experiments and cyclic regeneration experiments were also carried out, which demonstrate the great potential application of cationic TFP-EB COF in the removal of NSAIDs.

Key words: Covalent organic framework(COF), Adsorption, Non-steroidal anti-inflammatory drug

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