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Erschienen in: Cellulose 3/2020

23.11.2019 | Original Research

Cotton fiber functionalized with 2D covalent organic frameworks for iodine capture

verfasst von: Yongqiang Li, Yarong Li, Qinghua Zhao, Li Li, Run Chen, Chiyang He

Erschienen in: Cellulose | Ausgabe 3/2020

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Abstract

By using a rapid cryogenic reaction, cotton fiber was covalently functionalized with imine-linked two-dimensional covalent organic frameworks (2D COFs), which was synthesized via an imine condensation reaction between 1,3,5-tris(4-aminophenyl)benzene and terephthaldehyde. The resulting functionalized cotton (COFs@cotton) was characterized by fourier transform infrared spectroscopy, powder X-ray diffraction, scanning electron microscope, thermo-gravimetric analysis, nitrogen adsorption–desorption analysis and elemental analysis. The presence of a lot of imine functional groups in combination with dispersed mesoporous holes results in rapid adsorption rate and relatively high iodine affinity with uptake capacities up to 533.9 mg/g, which was much higher than that of untreated cotton. In addition, COFs@cotton also shows remarkable capability as absorbent for iodine in solution. The adsorbed iodine can be completely extracted from COFs@cotton by being washed with ethanol, permitting the simple reuse of adsorbent. This new functionalization approach can be applied to different kind of imine-linked COFs, and the corresponding adsorbents show more extensive practical application prospect for iodine capture.

Graphic abstract

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Literatur
Zurück zum Zitat Geng T, Ye S, Zhu Z, Zhang W (2018) Triazine-based conjugated microporous polymers with N,N,N′,N′-tetraphenyl-1,4-phenylenediamine, 1,3,5-tris(diphenylamino)benzene and 1,3,5-tris[(3-methylphenyl)-phenylamino]benzene as the core for high iodine capture and fluorescence sensing of o-nitrophenol. J Mater Chem A 6:2808–2816. https://doi.org/10.1039/c7ta08251g CrossRef Geng T, Ye S, Zhu Z, Zhang W (2018) Triazine-based conjugated microporous polymers with N,N,N′,N′-tetraphenyl-1,4-phenylenediamine, 1,3,5-tris(diphenylamino)benzene and 1,3,5-tris[(3-methylphenyl)-phenylamino]benzene as the core for high iodine capture and fluorescence sensing of o-nitrophenol. J Mater Chem A 6:2808–2816. https://​doi.​org/​10.​1039/​c7ta08251g CrossRef
Zurück zum Zitat Lv LL, Yang J, Zhang HM, Liu YY, Ma JF (2015) Metal-ion exchange, small-molecule sensing, selective dye adsorption, and reversible iodine uptake of three coordination polymers constructed by a new resorcin[4]arene-based tetracarboxylate. Inorg Chem 54:1744–1755. https://doi.org/10.1021/ic502686b CrossRefPubMed Lv LL, Yang J, Zhang HM, Liu YY, Ma JF (2015) Metal-ion exchange, small-molecule sensing, selective dye adsorption, and reversible iodine uptake of three coordination polymers constructed by a new resorcin[4]arene-based tetracarboxylate. Inorg Chem 54:1744–1755. https://​doi.​org/​10.​1021/​ic502686b CrossRefPubMed
Metadaten
Titel
Cotton fiber functionalized with 2D covalent organic frameworks for iodine capture
verfasst von
Yongqiang Li
Yarong Li
Qinghua Zhao
Li Li
Run Chen
Chiyang He
Publikationsdatum
23.11.2019
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 3/2020
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02877-0

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