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General synthesis of ultrafine metal oxide/reduced graphene oxide nanocomposites for ultrahigh-flux nanofiltration membrane

Nature communications, 2022-01, Vol.13 (1), p.471-471, Article 471 [Peer Reviewed Journal]

2022. The Author(s). ;The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2022 ;ISSN: 2041-1723 ;EISSN: 2041-1723 ;DOI: 10.1038/s41467-022-28180-4 ;PMID: 35079004

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  • Title:
    General synthesis of ultrafine metal oxide/reduced graphene oxide nanocomposites for ultrahigh-flux nanofiltration membrane
  • Author: Zhang, Wanyu ; Xu, Hai ; Xie, Fei ; Ma, Xiaohua ; Niu, Bo ; Chen, Mingqi ; Zhang, Hongyu ; Zhang, Yayun ; Long, Donghui
  • Subjects: Colloiding ; Dyes ; Fabrication ; Filtration ; Functional groups ; Graphene ; Interlayers ; Membrane permeability ; Membranes ; Metal oxides ; Metals ; Nanocomposites ; Nanofiltration ; Nanoparticles ; Nanotechnology ; Nucleation ; Osmosis ; Permeability ; Selectivity ; Synthesis ; Ultrafines ; Water purification
  • Is Part Of: Nature communications, 2022-01, Vol.13 (1), p.471-471, Article 471
  • Description: Graphene-based membranes have great potential to revolutionize nanofiltration technology, but achieving high solute rejections at high water flux remains extremely challenging. Herein, a family of ultrafine metal oxide/reduced graphene oxide (rGO) nanocomposites are synthesized through a heterogenous nucleation and diffusion-controlled growth process for dye nanofiltration. The synthesis is based on the utilization of oxygen functional groups on GO surface as preferential active sites for heterogeneous nucleation, leading to the formation of sub-3 nm size, monodispersing as well as high-density loading of metal oxide nanoparticles. The anchored ultrafine nanoparticles could inhibit the wrinkling of the rGO nanosheet, forming highly stable colloidal solutions for the solution processing fabrication of nanofiltration membranes. By functioning as pillars, the nanoparticles remarkably increase both vertical interlayer spacing and lateral tortuous paths of the rGO membranes, offering a water permeability of 225 L m h bar and selectivity up to 98% in the size-exclusion separation of methyl blue.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2041-1723
    EISSN: 2041-1723
    DOI: 10.1038/s41467-022-28180-4
    PMID: 35079004
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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