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New efficient inorganic-organic nanofibers electrospun membrane for fluorescence detection and removal of mercury (II) ions

Tahvili, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.molstruc.2018.10.069
  3. Publisher: Elsevier B.V , 2019
  4. Abstract:
  5. In this study, a new inorganic-organic nano fibrous membrane (PTSNFM) has been fabricated via immobilization of carbazol-based Schiff base (S) into a polyvinyl alcohol (PVA) - tetraethyl orthosilicate (TEOS) polymeric support using the electrospinning method. PTSNFM has been used as an optode to detect and remove of mercury (II) ions. The characterization of PTSNFM has been fully carried out using different methods including FE-SEM, TEM, AFM, viscosity, surface tension and conductivity. FE-SEM and FT-IR analysis demonstrated the binding of Hg (II) to the PTSNFM via chelating of Hg (II) to the Schiff base ligand. PTSNFM can detect Hg (II) in the dynamic range of 0.020–0.50 ng/mL, with the LOD of 0.0180 ng/mL. PTSNFM has been evaluated in the some aqueous real samples showing the removal efficiency in the range of 97.78–99.41%. © 2018
  6. Keywords:
  7. Hg (II) ; Membrane ; Nano fiber ; Sensor ; Electrospinning ; Fibrous membranes ; Membranes ; Nanofibers ; Nanosensors ; Sensors ; Electrospinning method ; Electrospun membranes ; Fluorescence detection ; Poly (vinyl alcohol) (PVA) ; Removal efficiencies ; Schiff-base ; Schiff-base ligands ; Tetraethyl orthosilicates ; Mercury compounds
  8. Source: Journal of Molecular Structure ; Volume 1179 , 2019 , Pages 242-251 ; 00222860 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S002228601831264X