In-situ growth of covalent triazine frameworks on ZIF8 for enhanced adsorption of fluoroquinolones in milk

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-07-05 Epub Date: 2025-03-23 DOI:10.1016/j.colsurfa.2025.136632

Juan Zhang, Furong Tang, Ting Zou, Jinyi Chen

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Abstract

A novel composite based on in-situ grown covalent triazine frameworks (CTFs) on ZIF8 was designed and synthesized for application in dispersive solid-phase extraction (DSPE), aiming at the selective extraction of fluoroquinolones (FQs). The ZIF8@CTFs composite were constructed through specific organic ligands, exhibiting exceptional adsorption affinity towards the target analytes. Their unique structural properties, particularly the synergistic effect between ZIF8 and CTFs, provided abundant active sites, thereby enhancing the selectivity and adsorption capacity of the composite. Competitive adsorption experiments and mechanistic studies validated the efficient capture capability of ZIF8@CTFs towards the target FQs. Under optimized conditions, a sensitive analytical method was established by integrating DSPE using ZIF8@CTFs with high-performance liquid chromatography (HPLC), enabling quantitative analysis of multiple target analytes in milk samples. This method demonstrated a wide linear range, high precision, and LODs as low as 0.0025 μg mL⁻¹. The recovery rates ranged from 95.3 % to 102.6 %, with RSD below 5.1 % at various spiked concentrations, indicating the promising application potential of this approach for the detection of target analytes in milk samples.

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ZIF8上原位生长共价三嗪骨架增强牛奶中氟喹诺酮类药物的吸附

针对氟喹诺酮类药物（FQs）的选择性提取，设计并合成了一种基于原位生长共价三嗪框架（CTFs）的新型复合材料，用于分散固相萃取。ZIF8@CTFs复合材料是通过特定的有机配体构建的，对目标分析物具有特殊的吸附亲和力。它们独特的结构特性，特别是ZIF8与CTFs之间的协同作用，提供了丰富的活性位点，从而提高了复合材料的选择性和吸附能力。竞争吸附实验和机理研究验证了ZIF8@CTFs对目标FQs的高效捕获能力。在优化的条件下，通过ZIF8@CTFs与高效液相色谱（HPLC）相结合，建立了一种灵敏的DSPE分析方法，可对牛奶样品中的多种目标物进行定量分析。该方法线性范围宽，精密度高，检出限低至0.0025 μg mL−1。在不同加标浓度下，加标回收率为95.3 % ~ 102.6 %,RSD < 5. %，表明该方法在牛奶样品中检测目标物具有良好的应用前景。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.