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Advanced photocatalytic materials for micro/nanoplastic degradation: A comprehensive review
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Tiny plastic particles called micro- and nanoplastics are turning up everywhere, in our oceans, soil, and likely our bodies, raising concerns about long-term health effects. This review rounds up the latest science on using light-activated materials (photocatalysts) to break down these plastic particles, including newer "green" methods made from plants, algae, and bacteria that could make cleanup cheaper and more eco-friendly. While these technologies are still being developed rather than ready for widespread use, they represent a promising direction for tackling plastic pollution at its source.
Micro- and nano-plastics (M/NPs) are omnipresent in oceanic and terrestrial ecosystems, posing massive environmental and human health risks. The overview of their types, life cycle, and laser spectroscopic detection is followed by a critical evaluation of degradation pathways, including photocatalytic, thermal, mechanical, microbial, catalytic, ozone-induced, and laser-assisted pathways. Recent advances on semiconducting photocatalysts-metal oxides, metal chalcogenides, and carbon-based nanomaterials-are discussed with particular emphasis on the structural modification for enhanced activity. Green synthesis routes via plant extract, bacteria, algae, and fungi are shown as sustainable approaches for large-scale remediation of M/NPs. Mechanistic insights into light–matter interactions as well as degradation processes are offered, emphasizing the necessity for cost-effective and eco-friendly alternatives to mitigate M/NP pollution.
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Photocatalytic Degradation of Microplastic in the Environment
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Researchers reviewed photocatalytic degradation as a promising approach for breaking down microplastics in the environment, finding it may offer advantages over incineration and filtration — though practical challenges around scale and efficiency remain.
Nanomaterials for the Catalytic Degradation and Detection of Microplastics: A Review
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Researchers review how engineered nanomaterials can both detect and catalytically break down microplastics in water, offering a promising toolkit for cleaning up one of the most pervasive and hard-to-remove pollutants now found throughout aquatic environments and the human body.
Sustainable strategies for microplastic waste management: utilizing nickel oxide nanoparticles as photocatalysts
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Researchers synthesized nickel oxide nanoparticles via sol-gel method and demonstrated their photocatalytic degradation of LDPE, PP, PVC, and PET microplastics under sunlight, with NiO/PET nanocomposites achieving approximately 41.64% degradation of PET films in 30 days. Solar-driven photocatalysis using metal oxide nanoparticles offers an eco-friendly and scalable approach to degrading microplastic waste without intensive energy input.
Research progress on photocatalytic degradation of microplastics by graphitic carbon nitride
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This review systematically examined graphitic carbon nitride (g-C3N4) as a photocatalytic tool for degrading microplastics, identifying hydroxyl radicals, holes, and superoxide radicals as the key reactive species and showing that pH, light intensity, and MP morphology significantly affect degradation efficiency. While still at laboratory scale, photocatalytic degradation offers a chemical pathway to break down persistent microplastics in water—an important complement to physical filtration approaches.
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.