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Photocatalytic Degradation of Cr(VI) via Electrospun MWCNTs-Fe3O4@PET and MWCNTs-Fe3O4/PET Nanofibers |
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PP: 65-73 |
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doi:10.18576/ijtfst/150105
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Author(s) |
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Shahyan S. Ahmed,
Banaz A. Abdulghafar,
Hadar M. Abdullah,
Suhad A. Yasin,
Rihan S. Abdul Jabar,
Kwok Feng Chong,
Gomaa A.M. Ali,
Zinab H. Bakr,
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Abstract |
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| Two approaches were used to synthesize and modify polyethylene terephthalate (PET) nanofibers for the photocatalytic reduction of Cr(VI) under xenon light. Fe3O4 nanoparticles were prepared via a simple hot water method and composited with PET nanofibers to form MWCNTs-Fe3O4@PET and electrospun MWCNTs-Fe3O4@PET nanofibers (NFs). XRD and SEM confirmed the smooth, homogeneous nanostructure. Photocatalytic activity was evaluated under various conditions (pH, contact time, Cr(VI) concentration, and reusability). MWCNTs-Fe3O4@PET NFs achieved 92% Cr(VI) reduction at pH 4 within 30 minutes, while MWCNTs-Fe3O4@PET reached 77.85% after 60 minutes. Reusability tests showed MWCNTs-Fe3O4@PET NFs retained 75% efficiency after four cycles. In contrast, MWCNTs-Fe3O4@PET NFs declined from 92.52% to 76.13% after one cycle due to its delicate texture. These findings suggest that while MWCNTs-Fe3O4@PET NFs offers higher initial efficiency, but, MWCNTs-Fe3O4@PET NFs provides better long-term reusability, making it a promising material for Cr(VI) removal from aqueous environments. |
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