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Covalent Organic Framework-Functionalized Magnetic CuFe2O4/Ag Nanoparticles for the Reduction of 4-Nitrophenol

Nanomaterials (Basel, Switzerland), 2020-02, Vol.10 (3), p.426 [Peer Reviewed Journal]

2020 by the authors. 2020 ;ISSN: 2079-4991 ;EISSN: 2079-4991 ;DOI: 10.3390/nano10030426 ;PMID: 32121177

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  • Title:
    Covalent Organic Framework-Functionalized Magnetic CuFe2O4/Ag Nanoparticles for the Reduction of 4-Nitrophenol
  • Author: Hou, Chen ; Zhao, Dongyan ; Chen, Wenqiang ; Li, Hao ; Zhang, Sufeng ; Liang, Chen
  • Subjects: core-shell ; magnetic covalent organic frameworks ; nanocomposite ; p-nitrophenol ; reduction
  • Is Part Of: Nanomaterials (Basel, Switzerland), 2020-02, Vol.10 (3), p.426
  • Description: In this work, magnetic CuFe2O4/Ag nanoparticles activated by porous covalent organic frameworks (COF) was fabricated to evaluate the heterogenous reduction of 4-nitrophenol (4-NP). The core-shell CuFe2O4/Ag@COF was successfully prepared by polydopamine reduction of silver ions on CuFe2O4 nanoparticles, followed by COF layer condensation. By integrating the intrinsic characteristics of the magnetic CuFe2O4/Ag core and COF layer, the obtained nanocomposite exhibited features of high specific surface area (464.21 m2 g−1), ordered mesoporous structure, strong environment stability, as well as fast magnetic response. Accordingly, the CuFe2O4/Ag@COF catalyst showed good affinity towards 4-NP via π-π stacking interactions and possessed enhanced catalytic activity compared with CuFe2O4/Ag and CuFe2O4@COF. The pseudo-first-order rate constant of CuFe2O4/Ag@COF (0.77 min−1) is 3 and 5 times higher than CuFe2O4/Ag and CuFe2O4@COF, respectively. The characteristics of bi-catalytic CuFe2O4/Ag and the porous COF shell of CuFe2O4/Ag@COF made a contribution to improve the activity of 4-NP reduction. The present work demonstrated a facile strategy to fabricate COF-activated nano-catalysts with enhanced performance in the fields of nitrophenolic wastewater treatment.
  • Publisher: MDPI
  • Language: English
  • Identifier: ISSN: 2079-4991
    EISSN: 2079-4991
    DOI: 10.3390/nano10030426
    PMID: 32121177
  • Source: Open Access: PubMed Central
    AUTh Library subscriptions: ProQuest Central
    ROAD
    DOAJ Directory of Open Access Journals
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