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Photocatalytic Microporous Membrane against the Increasing Problem of Water Emerging Pollutants.


ABSTRACT: Emerging pollutants are an essential class of recalcitrant contaminants that are not eliminated from water after conventional treatment. Here, a photocatalytic microporous membrane based on polyvinylidene difluoride-co-trifluoroethylene (PVDF-TrFE) with immobilised TiO2 nanoparticles, prepared by solvent casting, was tested against representative emerging pollutants. The structure and composition of these polymeric membranes were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, porosimetry, and contact angle goniometry. The nanocomposites exhibited a porous structure with a uniform distribution of TiO2 nanoparticles. The addition of TiO2 did not change the structure of the polymeric matrix; however, it increased the wettability of the nanocomposite. The nanocomposites degraded 99% of methylene blue (MB), 95% of ciprofloxacin (CIP), and 48% of ibuprofen (IBP). The microporous nanocomposite exhibited no photocatalytic efficiency loss after four use cycles, corresponding to 20 h of UV irradiation. The reusability of this system confirms the promising nature of polymer nanocomposites as the basis for cost-effective and scalable treatments of emerging pollutants.

SUBMITTER: Martins PM 

PROVIDER: S-EPMC6566406 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Photocatalytic Microporous Membrane against the Increasing Problem of Water Emerging Pollutants.

Martins Pedro M PM   Ribeiro Joana M JM   Teixeira Sara S   Petrovykh Dmitri Y DY   Cuniberti Gianaurelio G   Pereira Luciana L   Lanceros-Méndez Senentxu S  

Materials (Basel, Switzerland) 20190521 10


Emerging pollutants are an essential class of recalcitrant contaminants that are not eliminated from water after conventional treatment. Here, a photocatalytic microporous membrane based on polyvinylidene difluoride-co-trifluoroethylene (PVDF-TrFE) with immobilised TiO<sub>2</sub> nanoparticles, prepared by solvent casting, was tested against representative emerging pollutants. The structure and composition of these polymeric membranes were characterized by scanning electron microscopy, energy d  ...[more]

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