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Flexible multiscale cavity with omnidirectionality and high stability for in-site SERS detection of nanoplastics on oyster
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Modified hydrogel for high efficiency SERS detection and adsorption removal of microplastics
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Researchers developed a modified hydrogel material capable of both detecting and capturing microplastics using surface-enhanced Raman spectroscopy (SERS). The hydrogel's porous structure allows it to adsorb microplastic particles from water while SERS provides sensitive, rapid identification of plastic types. This dual-function approach offers a promising tool for environmental monitoring and microplastic removal from water systems.
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Researchers built a flexible SERS film with silver nanoparticles embedded in-situ within PDMS cavities, combining surface and volume hot spots to simultaneously detect polystyrene, polypropylene, and polyethylene microplastics in seawater and tap water at sub-microgram-per-milliliter limits, with the substrate remaining recyclable across five cleaning cycles and machine learning enabling quantification of multi-polymer mixtures.
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