Microwave-Assisted Rapid Synthesis of Novel Nitrogen-Rich Covalent Organic Frameworks for Ibuprofen Removal from Aqueous Solution

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI:10.1134/s0036024424701206

Jingjing Zhao, Jun Li, Weidong Cao, Shuzhong Du, Tianding Hu, Xinyu Chen, Feiyang Luo, Guohua Du, Yuchen Zhang, Yu Yang, Yunfei He, Shaoyun Shan

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Abstract

Covalent organic frameworks (COFs) are an ideal adsorbent because of its high chemical stability, predictable structure and adjustable pore size for ibuprofen (IBP) which is difficult to adsorb. However, conventional synthesis methods for COFs usually require long reaction time. In this study, we successfully synthesized a novel COF material Schiff base network-1 (SNW-1) by microwave-assisted method for absorbing (IBP), which effectively reduced the reaction time to only 0.5 h compared with the solvothermal method (72 h). The results showed that SNW-1revealed an excellent absorption capacity for IBP at room temperature. The results showed that the adsorption of SNW-1 was consistent with Freundlich model (R² = 0.9999) and pseudo-second order kinetic model (R² = 0.9984). The underlying adsorption mechanism was due to π‒π interactions, hydrogen bonding interactions, and electrostatic attractions. The presence of abundant nitrogen elements in SNW-1 promoted the formation of hydrogen bonds, thereby enhancing the adsorption process. In addition, SNW-1 could be easily regenerated using ethanol and also had a good adsorption effect on ibuprofen after 5 cycles. This study provided an economical and rapid preparation method for the treatment of solutions containing ibuprofen.

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微波辅助快速合成用于从水溶液中去除布洛芬的新型富氮共价有机框架

摘要共价有机框架（COFs）具有化学稳定性高、结构可预测、孔径可调节等特点，是一种理想的吸附剂，可吸附难以吸附的布洛芬（IBP）。然而，COFs 的传统合成方法通常需要较长的反应时间。本研究采用微波辅助法成功合成了一种新型 COF 材料席夫碱网络-1（SNW-1），用于吸附布洛芬（IBP），与溶热法（72 小时）相比，反应时间有效缩短至 0.5 小时。结果表明，SNW-1 在室温下对 IBP 有很好的吸收能力。结果表明，SNW-1 的吸附符合 Freundlich 模型（R2 = 0.9999）和伪二阶动力学模型（R2 = 0.9984）。其基本吸附机理是由于 π-π 相互作用、氢键相互作用和静电吸引。SNW-1 中大量氮元素的存在促进了氢键的形成，从而增强了吸附过程。此外，SNW-1 很容易用乙醇再生，在 5 次循环后对布洛芬也有很好的吸附效果。这项研究为处理含有布洛芬的溶液提供了一种经济、快速的制备方法。

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.

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