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Photo-induced Raman amplification for detecting and monitoring degradation of micro- and nano-sized PVC plastics
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Researchers developed a photo-induced enhanced Raman scattering (PIERS) platform using silver nanofilm-coated TiO2 to detect micro- and nano-sized PVC particles and monitor their photodegradation in real time under UV irradiation, enabling sensitive chemical characterization of nanoplastic breakdown products.
Detection and degradation monitoring of micro- and nano-sized PVC via PIERS on Ag NF-TiO 2 platform under continuous UV irradiation.
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Researchers used Raman imaging to characterize both microplastics and nanoplastics generated by cutting PVC pipe, demonstrating that mechanical processing of plastic products releases particles spanning the nano to micro size range with detectable polymer signatures.
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Researchers developed a novel in-situ SERS (surface-enhanced Raman scattering) detection method for nanoplastics that exploits UV photoaging to generate silver nanoparticles directly on particle surfaces, enabling highly sensitive identification of polystyrene, PVC, and PET nanoplastics in real lake water samples at concentrations as low as 1 × 10⁻⁶ mg/mL.
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Gold nanoparticle-based SERS substrates were used to detect sub-micro and nanoplastic particles including polystyrene, PET, and PVC, demonstrating that this technique can identify plastic particles below the size threshold of conventional Raman microscopy.
V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics
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A gold-nanoparticle-enhanced Raman spectroscopy substrate using V-shaped anodized aluminum oxide nanopores was developed to detect individual microplastic particles as small as 1 micrometer, with successful testing on real atmospheric samples. Rapid, sensitive detection methods for sub-5-micrometer microplastics are essential because this size range is the hardest to monitor yet most likely to penetrate biological barriers.
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This mini-review surveys surface-enhanced Raman spectroscopy (SERS) substrates and label-free detection strategies for identifying microplastics in water, covering metal nanoparticle suspensions, immobilized substrates, and nanofabricated platforms. SERS offers a highly sensitive analytical tool for detecting and characterizing microplastic pollutants at trace concentrations in complex aquatic environments.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.