We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Magneto-PhotothermalSynergistic Hydrophobicity Nanoplatformfor Efficient Enrichment and Ultrasensitive Detection of Micro-Nanoplastics
Summary
Researchers developed a hydrophobic magnetic nanoplatform that integrates multiple functions, achieving microplastic removal efficiencies of 93.8% for larger particles and 87.2% for nanoplastics in ultrapure water, while also enabling ultrasensitive detection of the captured particles.
The persistent accumulation of micro-nanoplastics (MnPs) in aquatic environments poses serious ecological and health risks, but their efficient removal and detection remain challenging due to their diverse compositions and sizes. Here, we design a highly hydrophobic magnetic nanoplatform (Fe3O4@PDA-HDTMS, F@PH), characterized by low surface energy and multi-interaction adsorption, to effectively integrate multiple functions, including enrichment, removal, detection, and quantification of MnPs. The optimized platform effectively captured polyethylene (PE), polypropylene (PP), and polystyrene (PS) MnPs, achieving removal efficiencies of 93.8% for microplastics (MPs) and 87.2% for nanoplastics (NPs) in ultrapure water. It also maintained high performance in complex matrices, including tap water (84.3–85.8%), simulated seawater (73.2–76.3%), and tissue suspensions (67.8–71.0%). Coupled with a photoinduced microbubble-enhanced SERS (PMERS) platform strategy, F@PH generates microbubbles and thermocapillary flow, promoting the enrichment of MnPs onto silver nanoparticle (AgNP) substrates, which results in a 102-fold signal enhancement compared to conventional SERS, allowing for ultrasensitive detection of MnPs. The detection limits reach 5 μg mL–1 and 10 μg mL–1 for 500 nm PE and PP MnPs, respectively. This integrated platform demonstrates high sensitivity and applicability in the analysis of bottled water and biological tissues, offering a promising approach for precise monitoring of MnPs and environmental remediation.
Sign in to start a discussion.
More Papers Like This
Magneto-Photothermal Synergistic Hydrophobicity Nanoplatform for Efficient Enrichment and Ultrasensitive Detection of Micro-Nanoplastics
Researchers developed a hydrophobic magnetic nanoplatform that integrates multiple functions, achieving microplastic removal efficiencies of 93.8% for larger particles and 87.2% for nanoplastics in ultrapure water, while also enabling ultrasensitive detection of the captured particles.
Magnetic polymeric composites: potential for separating and degrading micro/nano plastics
Researchers reviewed how magnetic composite materials can be used to attract, capture, and chemically break down microplastics and nanoplastics in wastewater, finding that combining magnetic separation with advanced oxidation or photocatalysis offers one of the most promising approaches for removing these persistent plastic pollutants from water.
Amphiphilic Magnetic Particles Dispersed in Water and Oil for the Removal of Hydrophilic and Hydrophobic Microplastics
Researchers developed amphiphilic magnetic particles that can disperse in both oil and water, making them effective at capturing different types of microplastics from aquatic environments. The particles were synthesized with carefully balanced hydrophilic and hydrophobic coatings, allowing them to interact with a wide range of plastic pollutants. The study suggests this magnetic particle approach offers a promising, recoverable method for microplastic removal from contaminated water.
Removal of Micro and Nanoplastics from Water Using Magnetic Nanoparticles: A Review
This review evaluates the use of magnetic nanoparticles as a technology for removing micro- and nanoplastics from water. Researchers found that magnetic nanoparticles can effectively capture plastic particles through surface interactions and be easily separated from water using magnets. The study suggests this approach offers a promising and energy-efficient method for cleaning microplastic-contaminated water, though challenges remain in scaling it for real-world applications.
Extraction and concentration of nanoplastic particles from aqueous suspensions using functionalized magnetic nanoparticles and a magnetic flow cell
Researchers developed a method using hydrophobic magnetic nanoparticles to capture and concentrate nanoplastics — plastic particles smaller than 1 micrometer — from water samples, achieving recovery rates of 57–85% across different water types including freshwater and seawater. This technique addresses a major gap in nanoplastic research by making it possible to detect and measure these nearly invisible particles in real environmental samples.