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- Title
Nanocomposite membranes prepared from cellulose acetate or polysulfone with Ag<sup>0</sup> nanoparticles and nitron reagent for nitrate ion removal.
- Authors
Razvan, Anca; Man, Geani Teodor; Dumitru, Florina; Pandele, Madalina; Trusca, Roxana; Motelica, Ludmila; Oprea, Ovidiu; Nechifor, Gheorghe
- Abstract
This paper presents the preparation route for new cellulose acetate and polysulfone membranes with silver nanoparticles (Ag0 NPs) incorporated and functionalized with a nitrate-selective reagent, nitron (C20H16N4): M1 (CA 20%), M2 (CA 20% + Ag0 NPs), M3 (CA 20% + Ag0 NPs, nitron-impregnated), M4 (CA 20% + Ag+: nitron complex, 1:1 molar ratio), M5 (Psf 15%), M6 (Psf 15% + Ag0 NPs), M7 (Psf 15% + Ag0 NPs, nitron-impregnated), and M8 (Psf 15% + Ag+: nitron complex, 1:1 molar ratio), that were morphologically and structurally characterized by ATR-FTIR and 2D FTIR imaging, UV-Vis, XPS and TG-DSC techniques and scanning electron microscopy coupled with energy dispersive spectroscopy. Dead-end filtration experiments were carried out to characterize the hydrodynamic performance of the prepared membranes. The best nitrate retention values were obtained for nitron-functionalized membranes M3 - 94.4% and M4 - 87.82%, comparable to those of commercially available nanofiltration membranes.
- Subjects
CELLULOSE acetate; ELECTRON microscope techniques; NANOPARTICLES; ULTRAFILTRATION; SILVER nanoparticles; NANOCOMPOSITE materials; CHEMICAL ionization mass spectrometry; NITRATES
- Publication
Desalination & Water Treatment, 2024, Vol 318, p1
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1016/j.dwt.2024.100400