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- W4306173656 abstract "• Separation of the oil-water mixture occurs due to the underwater oleophobic-super hydrophilic nature of Sr-MOF. • Sr-MOF obeys the Cassie-Baxter state for the separation of the oil-water mixture. • Sr-MOF is stable in harsh conditions in different pH solutions and salt concentrations. • The rejection of oil is above 99% and with a high flux depending on the material on which the Sr-MOF is bedded. • With the increase in reusability cycles the flux increases and remains constant having a constant oil rejection throughout. The oil spill clean-up from water bodies is a major challenge in recent years because of the rise in pollution due to human activities. To tackle these environmental issues, we report the use of the Strontium Metal-Organic Framework (Sr-MOF) for the application of oil-water separation. Herein, the separation is carried out through underwater oleophobic-super hydrophilic properties of the MOF. The Sr-MOF was successfully synthesized using a strontium metal source ([Sr(NO 3 ) 2 ]) and 1,4-benzenedicraboxylic acid (H 2 BDC) as the organic linker. The MOF showed an excellent separation efficacy of different oils with above 99% oil rejection driven by gravity. Also, the underwater oil contact angle (UWOCA) of various oils was greater than 132° for Sr-MOF which obeys Cassie-Baxter's theory, due to which the MOF showed excellent oil separation. Interestingly, the flux was dependent on the kind of material the MOF is placed over i.e., for cotton bedding, the flux is above 500 Lm -2 h -1 and for steel mesh bedding the flux is above 5000 Lm -2 h -1 . We have also demonstrated their reusability tests with the least number of 20 cycles which shows a constant rejection of oils. Due to the super-wetting properties, the MOF is stable through several cycles indicating that the Sr-MOF possesses an excellent potential for separating an oil-water mixture. This unique feature of Sr-MOF provides an interesting platform for the applications of MOFs for oil-water separation applications." @default.
- W4306173656 created "2022-10-14" @default.
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- W4306173656 date "2023-02-01" @default.
- W4306173656 modified "2023-10-17" @default.
- W4306173656 title "Underwater oleophobic-super hydrophilic strontium-MOF for efficient oil/water separation" @default.
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- W4306173656 doi "https://doi.org/10.1016/j.cej.2022.139757" @default.
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