A facile nanoparticle doping sol-gel method for the fabrication of defect-free nanoporous ceramic membranes

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Abstract

Enhanced α-alumina tight ultrafiltration (UF) membranes were fabricated by using a facile nanoparticle doping sol-gel method. The addition of nanoparticles could not only promote the phase transition of alumina from γ to α phase at low temperature, but also play an important role in the defect-patching of substrate during the layer-forming process. The membrane surface was defect-free and smooth. Additionally, a relatively small pore size was observed. The nanoparticle doping sol-gel method showed a good potential for fabricating such integrated UF membranes, which are high performance interlayers for ceramic nanofiltration (NF) membranes.

Original languageEnglish
Pages (from-to)12-15
Number of pages4
JournalColloids and Interface Science Communications
Volume5
DOIs
StatePublished - 1 Mar 2015

Keywords

  • Interlayer
  • Nanoparticle doping
  • Nanoporous
  • Sol-gel
  • α-Alumina

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