Hierarchical covalent organic framework hollow nanofibers-bonded stainless steel fiber for efficient solid phase microextraction

Yuanyuan Fang; Fangzhou Zhou; Qian Zhang; Chao Deng; Minying Wu; Hsin-Hui Shen; Yi Tang; Yajun Wang

doi:10.1016/j.talanta.2023.125223

Hierarchical covalent organic framework hollow nanofibers-bonded stainless steel fiber for efficient solid phase microextraction

Talanta. 2024 Jan 15:267:125223. doi: 10.1016/j.talanta.2023.125223. Epub 2023 Sep 20.

Authors

Yuanyuan Fang¹, Fangzhou Zhou¹, Qian Zhang¹, Chao Deng², Minying Wu¹, Hsin-Hui Shen³, Yi Tang⁴, Yajun Wang⁵

Affiliations

¹ Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, China.
² College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325027, Zhejiang, PR China. Electronic address: dengchao@wzu.edu.cn.
³ Department of Materials Science and Engineering, Monash University, Clayton, Vic, 3800, Australia.
⁴ Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, China. Electronic address: yitang@fudan.edu.cn.
⁵ Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, China; College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325027, Zhejiang, PR China. Electronic address: yajunwang@wzu.edu.cn.

PMID: 37748274
DOI: 10.1016/j.talanta.2023.125223

Abstract

The solid phase microextraction (SPME) technique has been widely applied in the detection of trace compounds in food, environment, and medicine due to its advantages of easy quantification, simple operation, and greenness. Herein, a templating strategy with SiO₂ nanofibers (SiO₂ NFs) is reported to synthesize hierarchical covalent organic framework hollow nanofibers (COF HNFs)-coated stainless steel fiber for SPME application with dramatically enhanced enrichment performance for trace analytes. The construction of hierarchical porosity inside the microextraction coatings can not only increase the specific surface area of COF extraction materials for obtaining more abundant adsorption sites but also greatly improve the accessibility of internal COF micropores. Moreover, the thicknesses of the microextraction COF coatings can be facilely tailored by adjusting the amount of SiO₂ NFs pre-assembled on the SPME fibers. On the headspace solid phase microextraction (HS-SPME) of antimicrobial residues, the developed COF TpBD-Me₂ HNFs-12 fibers achieve enrichment factors of 2026 and 1823 for thymol and carvacrol respectively, which are significantly higher than those obtained from the counterpart COF TpBD-Me₂-bonded fiber (8.5-8.2 times) and commercial CAR/PDMS fiber (3.3-4.4 times). Furthermore, the developed method was demonstrated to have wide linearity (0.1-50 μg L^-1), low limits of detection (0.010 μg L^-1), good thermal stability and excellent reusability (>60 recycles), demonstrating great application potential in the extraction of trace organic pollutants. The strategy developed in this work is applicable to preparing a variety of topological COF (e.g., TpBD, TpPa-1) HNFs-bonded fibers.

Keywords: Covalent organic frameworks; Enrichment factors; Extraction fibers; Hollow nanofibers; Solid phase microextraction.