Synthesis of Molecularly Imprinted Polymers with Magnetite Cores for Ibuprofen Adsorption

Jurnal Kimia Sains dan Aplikasi Pub Date : 2024-02-13 DOI:10.14710/jksa.27.1.28-34

Halimah Fahri, M. A. Zulfikar, Muhammad Yudhistira Azis

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Abstract

Ibuprofen (IBP) is a pollutant that is widely found in aquatic environments due to pharmaceutical waste and the metabolic results of humans who consume the drug. These compounds can cause damage to aquatic ecosystems, genotoxicity, and aquatic toxicity and are harmful to human health. This study aims to selectively adsorb IBP using magnetic molecularly imprinted polymers (MMIPs) synthesized from ibuprofen (IBP) as a template molecule, methacrylic acid (MAA) as a functional monomer, and divinylbenzene (DVB) as a crosslinker with a mole ratio of 1:4:20 in acetonitrile porogen solvent using a bulk polymerization method. Fe3O4 nanoparticles and MMIPs were characterized using X-ray diffraction (XRD), Fourier Transform Infra-Red (FTIR), and Scanning Electron Microscope (SEM). IBP adsorption reached optimum conditions at pH 3 with a contact time of 90 minutes and a mass of 25 mg of adsorbent. The adsorption performance of MMIPs for IBP was evaluated by adsorption isotherms and adsorption kinetics. Adsorption of IBP by MMIPs followed the Langmuir adsorption isotherm model with an adsorption capacity of 227.24 mg/g. Kinetic studies showed that the adsorption process followed a pseudo-second-order adsorption kinetic model. MMIPs can adsorb IBP selectively even in the presence of interfering compounds, are easily separated from the solution, and can be used repeatedly with good adsorption ability. Hence, it is efficient and promising for removing IBP from aqueous media.

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合成具有磁铁矿核的分子印迹聚合物以吸附布洛芬

布洛芬（IBP）是一种广泛存在于水生环境中的污染物，其产生原因是药物废弃物和人类服用药物后的代谢结果。这些化合物会对水生生态系统造成破坏、基因毒性和水生毒性，对人类健康有害。本研究以布洛芬（IBP）为模板分子，甲基丙烯酸（MAA）为功能单体，二乙烯基苯（DVB）为交联剂，以 1:4:20 的摩尔比在乙腈孔源溶剂中采用体聚合法合成磁性分子印迹聚合物（MMIPs），旨在选择性地吸附 IBP。采用 X 射线衍射 (XRD)、傅立叶变换红外 (FTIR) 和扫描电子显微镜 (SEM) 对 Fe3O4 纳米粒子和 MMIPs 进行了表征。在 pH 值为 3、接触时间为 90 分钟、吸附剂质量为 25 毫克时，IBP 的吸附达到最佳状态。通过吸附等温线和吸附动力学评估了 MMIPs 对 IBP 的吸附性能。MMIPs 对 IBP 的吸附遵循 Langmuir 吸附等温线模型，吸附容量为 227.24 mg/g。动力学研究表明，吸附过程遵循伪二阶吸附动力学模型。MMIPs 即使在有干扰化合物存在的情况下也能选择性地吸附 IBP，很容易从溶液中分离出来，而且可以反复使用，吸附能力强。因此，MMIPs 在去除水介质中的 IBP 方面具有很高的效率和前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Jurnal Kimia Sains dan Aplikasi

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审稿时长

17 weeks