Enhancing antimicrobial efficacy: 8-Hydroxyquinoline incorporation into metal-organic frameworks with iron ion coupling

吸附 金属有机骨架 朗缪尔吸附模型 水溶液中的金属离子 无机化学 热重分析 化学 朗缪尔 核化学 吸附 傅里叶变换红外光谱 材料科学 金属 有机化学 化学工程 工程类
作者
Linh Hồ Thùy Nguyễn,Khoa Dang Hoang Tran,Tien Le,Phước Vinh Nguyễn,Giang Bac Nguyen Vu,Phuong Hoang Tran,Ung Thi Dieu Thuy,Anh Tuấn Thanh Phạm,Ngoc Quang Tran,Minh-Tri Le,Tân Lê Hoàng Đoàn
出处
期刊:Materials Chemistry and Physics [Elsevier BV]
卷期号:319: 129346-129346 被引量:4
标识
DOI:10.1016/j.matchemphys.2024.129346
摘要

The antimicrobial properties of 8-Hydroxyquinoline (8-Hq), a small organic compound known for its metal-chelating capabilities, hold significant promise. However, its limited solubility in water poses a challenge for practical applications. In this study, we address this limitation by augmenting the antimicrobial efficacy of 8-Hq through its integration into the metal-organic framework UiO-66 (named 8-Hq@UiO-66) and coupling it with iron ions (designated as Fe/8-Hq@UiO-66) via an adsorption process. The sorption isotherm and adsorption kinetics were meticulously examined using Langmuir's adsorption model and the pseudo-second-order kinetic model. Material characterization techniques including powder X-ray powder diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, nitrogen adsorption isotherms, ultraviolet–visible spectroscopy, and photoluminescence spectroscopy revealed the coordination of zirconium clusters and iron with the nitrogen and hydroxyl groups of 8-Hq, respectively. Furthermore, our investigation into metal ion adsorption demonstrated that the 8-Hq@UiO-66 composite displayed a notable selectivity for iron ions over other metal ions in aqueous media. Under optimized conditions, the adsorption capacity for iron ions ranged from approximately 34–46 mg g–1. Importantly, the Fe/8-Hq@UiO-66 composite exhibited potent antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, and Escherichia coli. These findings underscore the potential of incorporating 8-Hq into porous metal-organic frameworks and coupling it with iron ions to enhance its antimicrobial efficacy.
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