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Plastics adsorption and removal by 2D ultrathin iron oxide nanodiscs: From micro to nano
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Researchers developed ultra-thin magnetic iron oxide nanodiscs for removing micro- and nanoplastics from water. The study found that these nanodiscs achieved high adsorption capacity through electrostatic and magnetic forces, and maintained over 90% removal efficiency after five reuse cycles, offering a cost-effective approach for treating plastic-contaminated wastewater.
The escalation of microplastics/nanoplastics (MPs/NPs) contamination in aqueous systems has ignited considerable concern. Magnetic separation has emerged as a promising remedy for the removal of these pollutants, owing to its notable removal efficiency, cost-effectiveness, and environmentally friendly attributes. This study presents the utilization of ultra-thin magnetic Fe3O4 nanodiscs (NDs) for the adsorption and separation of MPs/NPs. Investigations revealed that these NDs could effectively adsorb/remove MPs/NPs across a spectrum ranging from micro- to nano-scale, exhibiting a notable adsorption capacity of 188.4 mg g−1. Mechanistically, MPs/NPs adsorption was driven by both electrostatic and magnetic forces originating from the vortex domain of NDs, which can be well described by pseudo-first-order and Sips models. Furthermore, the NDs exhibited outstanding reusability, maintaining over 90 % removal efficiency even after undergoing five cycles. This research introduces a cost-effective method for the separation of MPs/NPs, representing a significant stride in wastewater treatment methodologies.
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Effective removal of Micro- and nanoplastics from water using Iron oxide nanoparticles: Mechanisms and optimization
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Researchers developed a magnetic separation method using iron oxide nanoparticles to remove micro- and nanoplastics from water, achieving up to 95% removal efficiency within just 20 minutes. The technique works through hydrophobic interactions between the iron oxide particles and plastic surfaces, and was particularly effective for smaller nanoplastics. The method offers a relatively simple, rapid, and cost-effective approach to filtering plastic particles from contaminated water.
Magnetic Removal of Micro‐ and Nanoplastics from Water—from 100 nm to 100 µm Debris Size
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Researchers demonstrated a magnetic method for removing micro- and nanoplastics from water using iron oxide nanoparticles that attract oppositely charged plastic particles. The technique was effective across a wide size range, from 100 nanometers to 100 micrometers, and worked with multiple plastic types. The study suggests that magnetic removal could help address the gap in current wastewater treatment, which struggles to capture the smallest plastic particles.
Testing an Iron Oxide Nanoparticle-Based Method for Magnetic Separation of Nanoplastics and Microplastics from Water
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Researchers tested iron oxide nanoparticles with hydrophobic coatings as a method for magnetically separating micro- and nanoplastics from water. The approach achieved 100% removal of larger microplastics and nearly 90% removal of nanoplastics using a simple permanent magnet, suggesting a viable method for water purification and environmental monitoring.
Removal of Micro and Nano Plastics from Water Using Magnetic Nanoparticles
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Researchers evaluated surface-functionalized magnetic nanoparticles for removing micro- and nanoplastics from water, optimizing pH, dosage, contact time, and agitation to maximize removal efficiency, and found the approach outperforms conventional treatment while offering rapid magnetic separation and nanoparticle reusability.
Adsorptive removal of micron-sized polystyrene particles using magnetic iron oxide nanoparticles
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Researchers demonstrated that magnetic iron oxide nanoparticles can effectively adsorb and remove micron-sized polystyrene microplastics from water, offering a magnetically recoverable approach to microplastic remediation.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.