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<p>Polyethersulphone (PES) composite membrane was prepared by green synthesized cobalt oxide (Co<sub>3</sub>O<sub>4</sub>) powders using the phase inversion method. Both Co<sub>3</sub>O<sub>4</sub> powders and prepared composite membranes were characterized by using Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Analysis (EDX) and X-Ray Diffraction (XRD) techniques. Three different concentration (0.5%, 1.0%, 2.0%) was chosen for composite membrane preparation. The performance of (Co<sub>3</sub>O<sub>4</sub>) powders blended composite membranes were evaluated for pure water flux, BSA solution flux, and BSA rejection. In the antioxidant test, DPPH process was assayed. The highest DPPH free radicals inhibition was 86.43% for Co<sub>3</sub>O<sub>4</sub> powders synthesized from walnut leaves extract at concentration of 100 mg/L. <i>In vitro</i> DNA cleavage studies of Co<sub>3</sub>O<sub>4</sub> powders with plasmid DNA were carried out by using agarose gel process and Co<sub>3</sub>O<sub>4</sub> powders completely cleaved the DNA molecules. Co<sub>3</sub>O<sub>4</sub> powders displayed remarkable antimicrobial ability against common bacterial (<i>Pseudomas aeruginosa</i>, <i>Escherichia coli</i>, <i>Enterococcus hirae</i>, <i>Legionella pneumophila</i>, <i>Staphylococcus aureus</i>, and <i>Enterococcus faecalis</i>) and fungal (<i>Candida tropicalis</i> and <i>Candida parapsilosis</i>) pathogens. Additionally, these newly prepared Co<sub>3</sub>O<sub>4</sub> powders also showed considerable <i>E. coli</i> growth inhibiton efficiency. Furthermore, Co<sub>3</sub>O<sub>4</sub> powders were very active as anti-biofilm agents producing activity by 77.5% and 89.02% against <i>S. aureus</i>, and <i>P. aeruginosa</i>, respectively. PES membrane blended with Co<sub>3</sub>O<sub>4</sub> powders showed good antibacterial abilities. These results recommend that Co<sub>3</sub>O<sub>4</sub> powders possess considerable biomedical and environmental applications.</p>

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Preparation of Cobalt Oxide Powders Synthesized by Green Chemistry Method and Improving the Antibacterial Performance of PES Membrane

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月12日

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  • Aya Alterkaoui,
  • Serpil Gonca,
  • Semih Dogan,
  • Zelal Isik,
  • Sadin Ozdemir,
  • Volkan Filiz,
  • Nadir Dizge

摘要

Polyethersulphone (PES) composite membrane was prepared by green synthesized cobalt oxide (Co3O4) powders using the phase inversion method. Both Co3O4 powders and prepared composite membranes were characterized by using Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Analysis (EDX) and X-Ray Diffraction (XRD) techniques. Three different concentration (0.5%, 1.0%, 2.0%) was chosen for composite membrane preparation. The performance of (Co3O4) powders blended composite membranes were evaluated for pure water flux, BSA solution flux, and BSA rejection. In the antioxidant test, DPPH process was assayed. The highest DPPH free radicals inhibition was 86.43% for Co3O4 powders synthesized from walnut leaves extract at concentration of 100 mg/L. In vitro DNA cleavage studies of Co3O4 powders with plasmid DNA were carried out by using agarose gel process and Co3O4 powders completely cleaved the DNA molecules. Co3O4 powders displayed remarkable antimicrobial ability against common bacterial (Pseudomas aeruginosa, Escherichia coli, Enterococcus hirae, Legionella pneumophila, Staphylococcus aureus, and Enterococcus faecalis) and fungal (Candida tropicalis and Candida parapsilosis) pathogens. Additionally, these newly prepared Co3O4 powders also showed considerable E. coli growth inhibiton efficiency. Furthermore, Co3O4 powders were very active as anti-biofilm agents producing activity by 77.5% and 89.02% against S. aureus, and P. aeruginosa, respectively. PES membrane blended with Co3O4 powders showed good antibacterial abilities. These results recommend that Co3O4 powders possess considerable biomedical and environmental applications.