Novel antibacterial polyurethane and cellulose acetate mixed matrix membrane modified with functionalized TiO₂ nanoparticles for water treatment applications

Article


Ahmad, A., Sabir, A., Iqbal, S. S., Felemban, B. F., Riaz, T., Bahadar, A., Hossain, N., Khan, R. U. and Inam, F. 2022. Novel antibacterial polyurethane and cellulose acetate mixed matrix membrane modified with functionalized TiO₂ nanoparticles for water treatment applications. Chemosphere. 301 (Art. 134711). https://doi.org/10.1016/j.chemosphere.2022.134711
AuthorsAhmad, A., Sabir, A., Iqbal, S. S., Felemban, B. F., Riaz, T., Bahadar, A., Hossain, N., Khan, R. U. and Inam, F.
Abstract

Bacterial contamination is one of the leading causes of water pollution. Antibacterial polyurethane/cellulose acetate membranes modified by functionalized TiO₂ nanoparticles were processed and studied. TiO₂ nanoparticles were prepared and ultraviolet (UV) irradiated to activate their photocatalytic activity against Escherichia coli (E. Coil) and Methicillin-resistant Staphylococcus aureus (MRSA) bacteria. Functionalized TiO₂ nanoparticles were incorporated in flat-sheet mixed matrix membranes (MMMs). These membranes were characterized for their different properties such as morphology, thermal stability, mechanical strength, surface wettability, water retention, salt rejection, water flux, and their antibacterial performance against E. Coil and MRSA was also tested. The activity of nanoparticles against MRSA and E. coli was analyzed using three different concentrations, 0.5 wt%, 1.0 wt% and 1.5 wt% of nanoparticles and 0.5 wt% of TiO₂ nanoparticles showed maximum growth of bacteria. The maximum inhibition was observed in membranes with maximum nanoparticles when compared with other membranes. All these characteristics were strongly affected by increasing the concentration of TiO₂ nanoparticles in the prepared membranes and the duration of their UV exposure. Hence, it was proved from this analysis that these TiO₂ modified membranes exhibit substantial antibacterial properties. The results are supporting the utilization of these materials for water purification purposes.

JournalChemosphere
Journal citation301 (Art. 134711)
ISSN0045-6535
Year2022
PublisherElsevier
Accepted author manuscript
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1016/j.chemosphere.2022.134711
Publication dates
Online26 Apr 2022
Publication process dates
Accepted21 Apr 2022
Deposited03 May 2022
Copyright holder© 2022 Elsevier
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