التفاصيل البيبلوغرافية
| العنوان: |
TiO2 nanotubes immobilized on polyurethane foam as a floating photocatalyst for water treatment. |
| المؤلفون: |
Davari, Nila1 (AUTHOR), Falletta, Ermelinda2,3 (AUTHOR), Bianchi, Claudia L.2,3 (AUTHOR), Yargeau, Viviane4 (AUTHOR), Boffito, Daria C.1,5 (AUTHOR) daria-camilla.boffito@polymtl.ca |
| المصدر: |
Catalysis Today. Jun2024, Vol. 436, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*WATER purification, *URETHANE foam, *FOAM, *TITANIUM dioxide, *CHEMICAL processes, *CONTACT angle, *NANOTUBES |
| مستخلص: |
We investigated the photocatalytic activity of TiO 2 nanoparticles (TiO 2 -NPs) and TiO 2 nanotubes (TiO 2 -NTs) supported on a floating polyurethane (PU) foam for removing Bisphenol A (BPA) as a model pollutant. We fabricated TiO 2 -NPs by the sol-gel method and TiO 2 -NTs by the ultrasound-assisted hydrothermal method. Subsequently, the photocatalysts were immobilized onto the PU foam through the wet chemical deposition process. The synthesized photocatalysts were characterized by contact angle, SEM-EDS, TEM, XRD, DRS, and BET analyses. TiO 2 -NPs and TiO 2 -NTs were successfully deposited onto the PU foam, creating floating photocatalysts denoted as TiO 2 -NPs@PU and TiO 2 -NTs@PU. Our findings indicated that the nanotubular structure of floating TiO 2 photocatalysts enhanced the removal efficiency of BPA relative to the nanoparticles, resulting in the complete removal of the pollutant over 180 min of simulated sunlight irradiation. TiO 2 -NTs@PU was also stable after five reuse cycles. Moreover, h+ was the main scavenging reactive species during the photocatalysis of BPA with TiO 2 -NTs@PU. [Display omitted] • A floating photocatalyst reactor was reported for water purification. • TiO 2 -NPs and TiO 2 -NTs photocatalysts were immobilized on floating PU foam support. • Floating TiO 2 photocatalysts were synthesized to remove Bisphenol A (BPA). • The nanotubular structure of floating TiO 2 increased the photocatalytic activity. • TiO 2 -NTs@PU completely removed BPA under simulated sunlight irradiation. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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