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- Title
Robust CA-GO-TiO 2 /PTFE Photocatalytic Membranes for the Degradation of the Azithromycin Formulation from Wastewaters.
- Authors
Satulu, Veronica; Pandele, Andreea Madalina; Ionica, Giovanina-Iuliana; Bobirică, Liliana; Bonciu, Anca Florina; Scarlatescu, Alexandra; Bobirică, Constantin; Orbeci, Cristina; Voicu, Stefan Ioan; Mitu, Bogdana; Dinescu, Gheorghe
- Abstract
We have developed an innovative thin-film nanocomposite membrane that contains cellulose acetate (CA) with small amounts of TiO2-decorated graphene oxide (GO) (ranging from 0.5 wt.% to 2 wt.%) sandwiched between two polytetrafluoroethylene (PTFE)-like thin films. The PTFE-like films succeeded in maintaining the bulk porosity of the support while increasing the thermal and chemical robustness of the membrane and boosting the catalytic activity of TiO2 nanoparticles. The membranes exhibited a specific chemical composition and bonding, with predominant carbon–oxygen bonds from CA and GO in the bulk, and carbon–fluorine bonds on their PTFE-like coated sides. We have also tested the membranes' photocatalytic activities on azithromycin-containing wastewaters, demonstrating excellent efficiency with more than 80% degradation for 2 wt.% TiO2-decorated GO in the CA-GO-TiO2/PTFE-like membranes. The degradation of the azithromycin formulation occurs in two steps, with reaction rates being correlated to the amount of GO-TiO2 in the membranes.
- Subjects
PHOTODEGRADATION; POLYTEF; INDUSTRIAL wastes; AZITHROMYCIN; CELLULOSE acetate; CHEMICAL bonds
- Publication
Polymers (20734360), 2024, Vol 16, Issue 10, p1368
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym16101368