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- W4285678571 abstract "• A magnetic field-induced self-assembly strategy for the preparation of urchin-like particles. • The urchin-like geometry endows the particles with a high dispersity in solutions. • The high dispersity contributes to the fast mass transfer between the particles and solutions. • The modified urchin-like particles show a great potential in wastewater treatment. Pollutant treatment is critical in modern society and existing purification methods often cannot address this problem quickly and economically. Recently, hierarchically organized particles have attracted much academic attention in wastewater treatment because of their unusual geometry associated with the favorable properties of nanoscale units and three-dimensional assemblies synchronously. Here, we synthesized hierarchically organized Fe 3 O 4 /poly(glycidyl methacrylate-ethylene glycol dimethacrylate) (poly(GMA-EDMA)) meso -particles (UPPs) by a magnetic field-induced self-assembly strategy. Under the orientation of the external magnetic field, poly(GMA-EDMA) nanoparticles polymerized by GMA and EDMA organically self-assembled around Fe 3 O 4 nanoparticles into mesoscale UPPs. The obtained UPPs showed high dispersity in both aqueous and organic solutions due to that the spikes on the surface of UPPs weaken attractive van der Waals forces between particles. The high dispersity in solutions guarantees the high mass transfer efficiency between UPPs and solutions. Moreover, the incorporation of Fe 3 O 4 nanoparticles endows UPPs with a fast reversible macroscopic assembly & disassembly ability by controlling the external magnetic field, which is beneficial to the collection and regeneration of UPPs. Taking advantage of the features, we grafted iminodiacetic acid (IDA) on the surface of UPPs to obtain a heavy metal ion adsorbent. The IDA-modified UPPs showed high adsorption capacities, fast adsorption rates, and good recyclability for Cu 2+ and Pb 2+ . Besides, the IDA-modified UPPs can allow to be loaded by β -FeOOH nanocatalyst, showing a good photocatalytic performance toward methylene blue, promising a great potential in wastewater treatment." @default.
- W4285678571 created "2022-07-17" @default.
- W4285678571 creator A5043674816 @default.
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- W4285678571 date "2022-10-01" @default.
- W4285678571 modified "2023-09-29" @default.
- W4285678571 title "Magnetic field-induced self-assembly of urchin-like polymeric particles: mechanism, dispersity, and application in wastewater treatment" @default.
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- W4285678571 doi "https://doi.org/10.1016/j.seppur.2022.121742" @default.
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