Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates

Lan Wang; Peng Jiang; Ya-Lin Niu; Jun-Peng Cao; Tian-Ying Guo

doi:10.1007/s10118-024-3075-y

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Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates

RESEARCH ARTICLE | Updated：2024-03-14

- Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates
- Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates
- 高分子科学（英文版） 2024年42卷第4期页码：446-456
- Affiliations：
  
  Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry and Frontier Science Center for the Creation of New Organic Substances, Nankai University, Tianjin 300071, China
- Author bio：
  
  tyguo@nankai.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (No. 50978138), PCSIRT (No. IRT1257), NFFTBS (No. J1103306) and the Fundamental Research Funds for the Central Universities for financial support.;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-024-3075-y.
- DOI：10.1007/s10118-024-3075-y
  中图分类号：
- 收稿：2023-10-10，
  
  修回：2023-11-30，
  
  录用：2023-12-7，
  
  网络首发：2024-01-11，
  
  纸质出版：2024-04-01
- Accepted：
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Wang, L.; Jiang, P.; Niu, Y. L.; Cao, J. P.; Guo, T. Y. Fabrication of molecularly imprinted electrospun nanofibers with mono-amidoxime functional ligand for efficient decontamination of toxic organophosphates. Chinese J. Polym. Sci. 2024, 42, 446–456

Lan Wang, Peng Jiang, Ya-Lin Niu, et al. Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates[J]. Chinese Journal of Polymer Science, 2024, 42(4): 446-456.
Wang, L.; Jiang, P.; Niu, Y. L.; Cao, J. P.; Guo, T. Y. Fabrication of molecularly imprinted electrospun nanofibers with mono-amidoxime functional ligand for efficient decontamination of toxic organophosphates. Chinese J. Polym. Sci. 2024, 42, 446–456 DOI： 10.1007/s10118-024-3075-y.

Lan Wang, Peng Jiang, Ya-Lin Niu, et al. Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates[J]. Chinese Journal of Polymer Science, 2024, 42(4): 446-456. DOI： 10.1007/s10118-024-3075-y.

摘要

A novel post molecular imprinting method to prepare molecularly imprinted electrospun nanofiber with stable-binding and densely packed accessible active sites by crosslinking amidoxime side groups chains the surface of amidoxime-based functional polymer/polyacrylonitrile blending electrospun fibers. The resultant MIF-PMAOX/PAN fibers demonstrate the versatility and superiority as self-detoxifying catalyst for organophosphates.

Abstract

There is an urgent imperative to discover practical and efficacious artificial catalysts for the expeditious decontamination of toxic organophosphates. Herein

we propose a novel molecularly imprinted approach utilizing electrospun fiber scaffolds. Specifically

an amidoxime-based functional polymer (PMAOX) has been synthesized

which contains amidoxime groups that can act as nucleophiles and ligands for the formation of catalytic active sites. This polymer was blended with polyacrylonitrile (PAN)

a well-processable material

to prepare a nanofiber mat using electrospinning techniques. Then

the amidoxime side groups on fiber surface were further cross-linked after the molecular coordination of templates to complete the molecularly imprinting process. This approach can not only enhance the content of functional molecularly imprinted polymers without affecting structural stability

but also combines surface MI technology to fully expose and leverage the advantages of active sites. The as prepared molecularly imprinted electrospun nanofibers MIF-Zn-PMAOX/PAN-6/4 catalyzes the degradation of paraoxon with a half-life of 32 min

and MIF-Ag-PMAOX/PAN catalyzes the degradation of parathion with a half-life of 18 min. The maximum catalytic rate evidence rate enhancements nearly 3700-fold of the self-hydrolysis. Thus

the mono-amidoxime based molecularly imprinted fibers demonstrate the versatility and superiority as self-detoxifying for organophosphates.

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references

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