Self-assembled nanofiltration membrane containing antimicrobial organosilica prepared by sol-gel process

Ajay K. Singh, Amit K. Thakur, Vinod K. Shahi

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A new silica monomer precursor, bis(4'-aminopropyldiethoxysilylphenyl) 1,3,4-oxadiazole (APDSPO), was synthesized by Barbiar-Grignard reaction. Nanofiltration membranes containing APDSPO (biocide active) and polyvinyl alcohol (PVA), were prepared by acid catalyzed sol-gel followed by formal cross-linking. These membranes were designed with good stabilities (hydraulic, mechanical and chemical), separation performance, and low surface roughness. These membranes showed microbial growth inhibiting properties and thus anti-biofilm/fouling nature. About 35.2Lm-2h-1 flux and 54.5% salt rejection for feed NaCl solution (1g/L) at 0.62MPa applied pressure, indicate the suitability of membrane (PO-6) for water purification. Membrane performance data also ruled out anti-biofouling nature of PO-6 membrane.

Original languageEnglish
Pages (from-to)275-283
Number of pages9
StatePublished - 15 Jan 2013
Externally publishedYes


  • Anti-biofouling
  • Bis(4'-aminopropyl diethoxysilylphenyl) 1,3,4-oxadiazole
  • Nanofiltration
  • Polyvinyl alcohol

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science
  • Water Science and Technology
  • Mechanical Engineering


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