One-step fabrication of multifunctional composite polyurethane spider-web-like nanofibrous membrane for water purification

Hem Raj Pant, Han Joo Kim, Mahesh Kumar Joshi, Bishweshwar Pant, Chan Hee Park, Jeong In Kim, K. S. Hui, Cheol Sang Kim

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

A stable silver-doped fly ash/polyurathene (Ag-FA/PU) nanocomposite multifunctional membrane is prepared by a facile one-step electrospinning process using fly ash particles (FAPs). Colloidal solution of PU with FAPs and Ag metal precursor was subjected to fabricate nanocomposite spider-web-like membrane using electrospinning process. Presence of N,N-dimethylformamide (solvent of PU) led to reduce silver nitrate into Ag NPs. Incorporation of Ag NPs and FAPs through electrospun PU fibers is proven through electron microscopy and spectroscopic techniques. Presence of these NPs on PU nanofibers introduces several potential physicochemical properties such as spider-web-like nano-neeting for NPs separation, enhanced absorption capacity to remove carcinogenic arsenic (As) and toxic organic dyes, and antibacterial properties with reduce bio-fouling for membrane filter application. Preliminary observations used for above-mentioned applications for water treatment showed that it will be an economically and environmentally friendly nonwoven matrix for water purification. This simple approach highlights new avenues about the utilization of one pollutant material to control other pollutants in scalable and inexpensive ways.

Original languageEnglish
Pages (from-to)25-33
Number of pages9
JournalJournal of Hazardous Materials
Volume264
Early online date4 Nov 2013
DOIs
Publication statusPublished - 15 Jan 2014

Keywords

  • Electrospinning
  • Fly ash polyurethane
  • Nano-netting
  • Nanomembrane

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