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The MC nanocomposite was synthesized using a co-precipitation method and incorporated into a PVC matrix by casting. The resulting nanocomposite-based membrane demonstrated a high degree of crystallinity and well-dispersed nanostructure, as confirmed by TEM, SEM, XRD, and FT-IR analyses. The performance of the membrane was evaluated in terms of water flux, solute rejection, and anti-fouling properties. The pinnacle of performance was unequivocally reached with a solution dosage of 50 mL, a solution concentration of 100 mg\u00a0L<jats:sup>\u22121<\/jats:sup>, and a pump pressure of 2 bar, ensuring that every facet of the membrane\u2019s potential was fully harnessed. The new fabricated membrane exhibited superior efficiency for oil\u2013water separation, with a rejection rate of 98% and an ultra-high flux of 0.102 L\/m<jats:sup>2<\/jats:sup>\u00a0h compared to pure PVC membranes with about 90% rejection rate and an ultra-high flux of 0.085 L\/m<jats:sup>2<\/jats:sup>\u00a0h. Furthermore, meticulous contact angle measurements revealed that the PMC nanocomposite membrane exhibited markedly lower contact angles (65\u00b0 with water, 50\u00b0 with ethanol, and 25\u00b0 with hexane) compared to PVC membranes. This substantial reduction, transitioning from 85 to 65\u00b0 with water, 65 to 50\u00b0 with ethanol, and 45 to 25\u00b0 with hexane for pure PVC membranes, underscores the profound enhancement in hydrophilicity attributed to the heightened nanoparticle content. Importantly, the rejection efficiency remained stable over five cycles, indicating excellent anti-fouling and cycling stability. The results highlight the potential of the maghemite copper oxide nanocomposite-based PVC membrane as a promising material for effective oil-in-water emulsion separation. This development opens up new possibilities for more flexible, durable, and anti-fouling membranes, making them ideal candidates for potential applications in separation technology. The presented findings provide valuable information for the advancement of membrane technology and its utilization in various industries, addressing the pressing challenge of oil-induced water pollution and promoting environmental sustainability.<\/jats:p>\n                <jats:p><jats:bold>Graphical Abstract<\/jats:bold><\/jats:p>","DOI":"10.1007\/s11356-023-31240-x","type":"journal-article","created":{"date-parts":[[2023,12,7]],"date-time":"2023-12-07T20:01:55Z","timestamp":1701979315000},"page":"2297-2313","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":117,"title":["Flexible, durable, and anti-fouling maghemite copper oxide nanocomposite-based membrane with ultra-high flux and efficiency for oil-in-water emulsions separation"],"prefix":"10.1007","volume":"31","author":[{"given":"Mahmoud F.","family":"Mubarak","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4046-7727","authenticated-orcid":false,"given":"Hanaa","family":"Selim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hamada B.","family":"Hawash","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Hemdan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,12,7]]},"reference":[{"key":"31240_CR1","doi-asserted-by":"publisher","first-page":"538","DOI":"10.1016\/j.compositesb.2018.12.075","volume":"162","author":"NH Abdullah","year":"2019","unstructured":"Abdullah NH, Shameli K, Abdullah EC, Abdullah LC (2019) Solid matrices for fabrication of magnetic iron oxide nanocomposites: synthesis, properties, and application for the adsorption of heavy metal ions and dyes. 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