Polyvinylidene fluoride (PVDF)/Ag@TiO2 nanocomposite membrane with enhanced fouling resistance and antibacterial performance

A novel Polyvinylidene fluoride/Ag decorated TiO2 (PVDF/Ag@TiO2) nanocomposite membrane was successfully prepared using APTES as a crosslinker via phase inversion technique. Synthesized Ag@TiO2 was characterized by Raman spectroscopy and XRD. Nanocomposite membranes were characterized by FTIR, SEM,...

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Bibliographic Details
Published in:Materials chemistry and physics 2021-08, Vol.268, p.124723, Article 124723
Main Authors: Mishra, Jnyana Ranjan, Samal, Sushanta K., Mohanty, Smita, Nayak, Sanjay K.
Format: Article
Language:English
Subjects:
Antibacterial
Antifouling
E coli
Fluorides
Membrane
Membranes
Nanocomposite
Nanocomposites
Nanoparticles
Polyvinylidene fluorides
PVDF
Raman spectroscopy
Silver
Titanium dioxide
Ultraviolet radiation
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Summary:A novel Polyvinylidene fluoride/Ag decorated TiO2 (PVDF/Ag@TiO2) nanocomposite membrane was successfully prepared using APTES as a crosslinker via phase inversion technique. Synthesized Ag@TiO2 was characterized by Raman spectroscopy and XRD. Nanocomposite membranes were characterized by FTIR, SEM, AFM. Flux performance and flux recovery ratio of PVDF/Ag@TiO2 membranes revealed that the PVDF/Ag@TiO2 nanocomposite membrane exhibited a pure water flux up to 465.8 Lm−2h−1 which is three-fold higher than virgin membrane and a higher BSA rejection of 93.7% after rinsing with DI water followed by UV irradiation. Also, PVDF/Ag@TiO2 nanocomposite membrane shows a faster removal of E. coli. Overall, the incorporation of nanoparticles in the polymer matrix enhanced the antifouling and antibacterial properties of the nanocomposite membrane to a remarkable extent. [Display omitted] •Nanocomposite membranes were prepared by entrapping of Ag@TiO2 nanoparticle within PVDF.•The resultant membrane exhibited significantly improved hydrophilicity and water permeability.•PVDF/Ag@TiO2 membrane has excellent antibacterial and antifouling properties.•Good self-cleaning performance of the membranes confirmed from flux recovery ratio.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2021.124723