Reconstructing Electrically Conductive Nanofiltration Membranes with an Aniline-Functionalized Carbon Nanotubes Interlayer for Highly Effective Toxic Organic Treatment.

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  • Additional Information
    • Source:
      Publisher: American Chemical Society Country of Publication: United States NLM ID: 0213155 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5851 (Electronic) Linking ISSN: 0013936X NLM ISO Abbreviation: Environ Sci Technol Subsets: MEDLINE
    • Publication Information:
      Publication: Washington DC : American Chemical Society
      Original Publication: Easton, Pa. : American Chemical Society, c1967-
    • Subject Terms:
      Nanotubes, Carbon*/chemistry ; Water Pollutants, Chemical*/chemistry ; Membranes, Artificial* ; Filtration*; Aniline Compounds/chemistry ; Wastewater/chemistry ; Water Purification/methods ; Electric Conductivity
    • Abstract:
      Conductive nanofiltration (CNF) membranes hold great promise for removing small organic pollutants from water through enhanced Donnan exclusion and electrocatalytic degradation. However, current CNF membranes face limitations in conductivity, structural stability, and nanochannel control strategies. This work addresses these challenges by introducing aniline-functionalized carbon nanotubes (NH 2 -CNTs) as an interlayer. NH 2 -CNTs enhance the dispersibility and adhesion of pristine carbon nanotubes, leading to a more conductive and stable composite nanofiltration membrane. The redesigned NH 2 -CNTs interlayered conductive nanofiltration (NICNF) membrane exhibits a 10-fold increase in conductivity and a high response degree (80%) with excellent cyclic stability, surpassing existing CNF membranes. The synergistic effects of enhanced Donnan exclusion, voltage switching, and electrocatalysis enable the NICNF membrane to achieve selective recovery of mixed dyes, 98.97% removal of residual wastewater toxicity, and a 5.2-fold increase in permeance compared to the commercial NF270 membrane. This research paves the way for next-generation multifunctional membranes capable of the efficient recovery and degradation of toxic organic pollutants in wastewater.
    • Contributed Indexing:
      Keywords: carbon nanotubes; conductive nanofiltration membranes; electric field; interlayer; small molecular organics; toxicity removal
    • Accession Number:
      0 (Nanotubes, Carbon)
      0 (Water Pollutants, Chemical)
      0 (Membranes, Artificial)
      0 (Aniline Compounds)
      0 (Wastewater)
      SIR7XX2F1K (aniline)
    • Publication Date:
      Date Created: 20240831 Date Completed: 20240917 Latest Revision: 20240917
    • Publication Date:
      20240917
    • Accession Number:
      10.1021/acs.est.4c05759
    • Accession Number:
      39216011