Magnetic Poly(Ionic Liquid) Microcapsules for Oil Capture and Recovery

Abstract

The preparation of poly(ionic liquid) microcapsules from liquid marbles (3–20 μL) with additional magnetic properties is described. These microcapsules show excellent oil‐absorption properties and selectivity versus water, together with easy manipulation for oil capture and recovery.

Oil spills adsorption and cleanup by polymeric materials: A review

“…Fernandes et al 75 reported a simple method to obtain oil sorbent magnetic micro capsules for oil capture and recovery by utilizing magnetic nanoparticle and poly ionic liquid (Figure 3). They encapsulate an aqueous solution of magnetic nanoparticles in conventional liquid Recently, Wooley and coworkers reported a robust magnetic polymer/hybrid nanoparticle for effective oil spill recovery by atom transfer radical polymerization (Figure 5A).…”

“…Fernandes et al 75 reported a simple method to obtain oil sorbent magnetic micro capsules for oil capture and recovery by utilizing magnetic nanoparticle and poly ionic liquid (Figure 3). They encapsulate an aqueous solution of magnetic nanoparticles in conventional liquid marbles based on poly(3‐ n ‐tetradecyl‐1‐vinylimidazolium bromide) nanoparticles.…”

“…Chemical structure of poly(3‐ n ‐tetradecyl‐1‐vinylimidazolium bromide) and schematic illustration shows the method to determine the selectivity of a magnetic capsule to remove oil. Reprinted with copyright permission from Wiley online library 75 …”

“…Reprinted with copyright permission from American Chemical Society 76F I G U R E 3 Chemical structure of poly(3-n-tetradecyl-1-vinylimidazolium bromide) and schematic illustration shows the method to determine the selectivity of a magnetic capsule to remove oil. Reprinted with copyright permission from Wiley online library75 good magnetic property and helped on easy removal or separation of oil from the water surface. The oil sorption capacity of the materials was tested utilizing sunflower oil, soybean oil, motor oil, and diesel oil.The oil sorption capacity of PVDF/PS and PVDF/Fe 3 O 4 @PS sorbents were 44-46 and 35-36 g/g, respectively.…”

Innovative polyelectrolytes/poly(ionic liquid)s for energy and the environment

“…The empty microcapsules showed high selectivity up to 1000% for oil removal when placed in oil/water mixtures, maintaining their magnetic properties. The higher adsorption capacity value obtained in this study ( ca 11 g of oil per gram of capsule) was slightly superior to the gold standard of synthetic oil sorbents, polypropylene, which adsorbs 10 g of oil per gram of sorbent …”