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Diatomic Zn‐Functionalized Carbon Sphere for Microplastics Remediation in Natural Seawater at Environmentally Relevant Concentration
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Researchers developed a zinc-functionalized carbon material that can capture and degrade polyester microplastics in natural seawater at environmentally realistic concentrations. The material works through a combination of surface interactions that trap the plastics and zinc-mediated chemical reactions that break them into biodegradable substances, achieving a 70% conversion rate in 15 weeks. The study demonstrates a promising approach for addressing microplastic pollution in real-world marine settings.
Microplastics remediation in natural seawater is challenging due to their low environmental concentrations and chemical inertia under environmental conditions. Here, a novel approach is presented for the in situ capture and degradation of polyester microplastics using zinc-functionalized carbon material, for the first time at environmentally relevant concentrations in natural seawater. The capture of microplastics is driven by their multilevel non-covalent interactions with the high-surface-area carbon, while the degradation is realized by the nucleophile bridged to the dinuclear zinc sites. In natural seawater, polyester microplastics are quickly enriched onto the material and depolymerized into biodegradable substances with a conversion rate of 70% in 15 weeks. The robustness of the material is demonstrated across a wide range of dissolved organic matter and impurity concentrations, highlighting its potential applicability in diverse aquatic environments. This work offers a promising approach for addressing microplastic pollution in real-world settings.
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This review evaluates nanostructured materials as tools for removing microplastics from contaminated soil and water environments. Researchers found that engineered nanomaterials, including zinc-based hybrids and carbon-based systems, achieved recovery rates between 80% and 100% under optimized conditions. The study highlights these materials as a promising remediation strategy while noting the need for more realistic testing conditions and scalable approaches.
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Researchers enhanced activated carbon with zinc chloride to improve its ability to adsorb polystyrene nanoplastics from water, finding that pore filling and electrostatic interactions were the dominant removal mechanisms and that the modified carbon maintained stable performance in tap water and could be fully regenerated by high-temperature calcination.
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In lab tests, researchers used electricity to deposit zinc metal in water containing tiny polystyrene plastic particles. The zinc formed branching structures that trapped the plastic particles, reducing their amount in the water, with larger and smaller particles sticking to the metal in different patterns.
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Scientists developed a foam made from chitin, a natural material found in seafood shells, that can absorb over 400 milligrams of nano-sized microplastics per gram of material, even in saltwater. This recyclable, sustainable approach could help clean microplastics from ocean water, and the recovered plastic can be converted into useful products.
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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.