Advanced photocatalytic self-cleaning membrane for highly efficient oil-water separation using C/TiO2/SiO2 composite

Oil pollution poses severe threats to both ecosystems and human health. This study utilized electrospinning and carbonization processes to fabricate a SiO2-TiO2-C nanofiber membrane (STCNFM) exhibiting photocatalytic self-cleaning properties designed explicitly for oil-water separation. These membra...

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Bibliographic Details
Published in:Journal of water process engineering 2024-03, Vol.59, p.104969, Article 104969
Main Authors: Liu, Yalong, Xin, Binjie, Newton, Md All Amin, Li, Lifeng, Huang, Dan
Format: Article
Language:English
Subjects:
Carbonaceous nanofibrous membranes
Oil/water separation
Photocatalytic degradation
Self-cleaning
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Summary:Oil pollution poses severe threats to both ecosystems and human health. This study utilized electrospinning and carbonization processes to fabricate a SiO2-TiO2-C nanofiber membrane (STCNFM) exhibiting photocatalytic self-cleaning properties designed explicitly for oil-water separation. These membranes possess nanoscale rough structures, endowing them with superoleophilicity (0°) and hydrophobicity (138°). Addressing the limitations associated with traditional ceramic membranes, particularly in terms of stability and reproducibility, cyclic experiments confirm the significant stability and reproducibility of this composite membrane, ensuring reliable long-term applications for continuous oil-water separation. Leveraging the synergistic effect of TiO2 and the carbon fiber substrate, STCNFMs-5 demonstrate exceptional separation performance and notable self-cleaning capabilities. Following a 2-h exposure to ultraviolet light, the membrane's flux is restored to its original level. STCNFMs offer a promising solution for efficiently separating oil-water mixtures and emulsions, holding potential importance in water treatment and resource recovery endeavors. •Nano-membrane innovation: SiO2-TiO2-C design for efficient oil-water separation•Stability Breakthrough: Overcomes ceramic membrane limitations for reliability•Photocatalytic Synergy: Exceptional separation and self-cleaning capability•UV-Responsive Flux: Swift restoration after brief UV exposure•Water Management Solution: Addresses oil pollution for environmental efficiency
ISSN:2214-7144
2214-7144
DOI:10.1016/j.jwpe.2024.104969