Ferrocene crosslinked and functionalized chitosan microspheres towards bio-based Fenton-like system for the removal of organic pollutants.

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  • Author(s): Xie H;Xie H; Mu M; Mu M; Lu G; Lu G; Zhang Y; Zhang Y
  • Source:
    International journal of biological macromolecules [Int J Biol Macromol] 2024 Mar; Vol. 261 (Pt 1), pp. 129699. Date of Electronic Publication: 2024 Jan 27.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: Netherlands NLM ID: 7909578 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-0003 (Electronic) Linking ISSN: 01418130 NLM ISO Abbreviation: Int J Biol Macromol Subsets: MEDLINE
    • Publication Information:
      Publication: Amsterdam : Elsevier
      Original Publication: Guildford, Eng., IPC Science and Technology Press.
    • Subject Terms:
      Chitosan* ; Environmental Pollutants* ; Water Pollutants, Chemical* ; Azo Compounds* ; Ferrous Compounds*; Metallocenes ; Microspheres ; Hydrogen Peroxide ; Adsorption ; Hydrogen-Ion Concentration ; Kinetics
    • Abstract:
      Dye-containing wastewater treatment has been a major long-term global challenge. For this purpose, a novel bio-based microspheres (CS-FC) with high specific surface area (63.24 m 2 ·g -1 ) and nano-channels (17.95 nm) was prepared using chitosan as the framework and ferrocene as a crosslinking active group. CS-FC not only has the ability to rapidly enrich methyl orange (MO) through hydrogen-bonding and electrostatic attraction, but also almost completely degrades it in the presence of H 2 O 2 /K 2 S 2 O 8 through a synergistic radical/non-radical mechanism under the activating effect of ferrocene. Without H 2 O 2 /K 2 S 2 O 8 , the maximum MO adsorption capacity of CS-FC is in the range 871-1050 mg·g -1 , and conforms to a Langmuir isothermal model with pseudo-second-order kinetics. In the presence of H 2 O 2 /K 2 S 2 O 8 , the removal of MO dramatically increased from 32 % to nearly 100 % after incubation for 60 min, due to the simultaneous formation of highly reactive 1 O 2 and ·OH. The significant contribution from 1 O 2 endowed CS-FC/H 2 O 2 /K 2 S 2 O 8 with high universality for degrading various organic pollutants (including azo dyes and antibiotics), a wide pH window (2-8), and low sensitivity to co-existing ions. Such cost-effective, recyclable porous bio-based microspheres are suitable for heterogeneous Fenton-like catalysis in organic wastewater treatment that rely on synergistic radical/non-radical reaction pathways.
      Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
      (Copyright © 2024 Elsevier B.V. All rights reserved.)
    • Contributed Indexing:
      Keywords: Adsorption/degradation; Chitosan microsphere; Fenton/Fenton-like oxidation; Ferrocene; Radical/non-radical
    • Accession Number:
      9012-76-4 (Chitosan)
      0 (Environmental Pollutants)
      U96PKG90JQ (ferrocene)
      0 (Metallocenes)
      BBX060AN9V (Hydrogen Peroxide)
      6B4TC34456 (methyl orange)
      0 (Water Pollutants, Chemical)
      0 (Azo Compounds)
      0 (Ferrous Compounds)
    • Publication Date:
      Date Created: 20240128 Date Completed: 20240311 Latest Revision: 20240311
    • Publication Date:
      20240311
    • Accession Number:
      10.1016/j.ijbiomac.2024.129699
    • Accession Number:
      38281517