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Photocatalytic Recovery of Aromatic Chemicals from Waste Plastics
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This review paper summarizes emerging research on using sunlight and special catalysts to break down plastic waste into valuable chemical building blocks, instead of letting it pile up in landfills or break into microplastics that pollute our environment and bodies. This "plastic upcycling" approach could offer a cleaner way to reuse plastic while cutting down on the plastic pollution linked to health concerns like microplastic contamination in food, water, and even human tissue. The technology is still developing, and the paper outlines what scientists need to solve before it can be used at a large scale.
ABSTRACT Plastic waste is abundant in carbon and hydrogen resources. The development of sustainable catalytic process for the recovery of chemicals from waste plastic offers a promising strategy to simultaneously mitigate environmental pollution and reduce dependence on petrochemical products. Among the valuable targets, aromatic chemicals are particularly attractive which are widely used in polymers, pharmaceuticals, and fuels. Therefore, photocatalytic recovery of aromatic chemicals from waste plastic attracts huge attention to contribute to sustainable technology and circular economy, which couple solar energy with catalyst‐controlled redox chemistry to enable plastic upcycling under mild conditions. In this Review, the fundamentals of photocatalytic plastic upcycling are outlined, including photocatalytic mechanism and the thermodynamic and kinetic challenges. Then, representative catalytic systems are discussed, such as polyethylene terephthalate, polystyrene, and polyphenylene sulfide. Finally, the future challenges and development directions are summarized, including development of catalytic system, mechanistic elucidation, real‐world plastic feedstocks, and techno‐economic analysis. This Review provides a comprehensive framework for understanding photocatalytic aromatic chemical recovery from waste plastic and offers guidance for the rational design of efficient, selective, and scalable solar‐driven upcycling systems.
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Sustainable Treatment of Plastic Wastes with Photocatalytic Technologies: A Review
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Researchers review photocatalytic technologies as a sustainable approach to plastic waste management, examining how light-driven reactions can break down plastics or convert them into valuable chemicals and clean energy, offering a dual benefit of environmental remediation and resource recovery.
A Holistic Remedy to the Plastic Era Through a High-Performance Photocatalytic System
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This review paper takes stock of a promising technology called photocatalysis, which uses light (potentially sunlight) to break down harmful microplastics and even convert plastic waste into useful chemicals. Since plastic pollution—including the tiny microplastic particles we're increasingly exposed to through food, water, and air—poses growing risks to human health, this approach offers a more sustainable alternative to traditional recycling. The researchers highlight current limitations in the technology and outline what needs to improve before it can be widely used to tackle plastic waste.
Light-driven polymer recycling to monomers and small molecules
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Researchers reviewed how sunlight can be harnessed to chemically break down plastic waste into reusable molecules, offering a lower-energy alternative to heat-based recycling methods like pyrolysis. While still limited to certain plastic types, light-driven recycling shows promise for converting hard-to-recycle plastics into valuable chemical building blocks.
Photocatalytic Upcycling of Plastic Waste: Mechanism, Integrating Modus, and Selectivity
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This review examines how photocatalysis, a process that uses light energy to drive chemical reactions, can transform plastic waste into useful products under mild and environmentally friendly conditions. Researchers compared photocatalytic approaches with other methods like heat-based and electrical catalysis, and explored how different experimental setups influence what end products are created. The study suggests that photocatalytic upcycling of plastics is a promising green technology, though challenges remain in improving efficiency and selectivity.
A Panoramic View on Plastic Waste Recycling and Upcycling: Heterogeneous Catalytic Strategies for Diverse Plastics and Multiple Pathways
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Plastic waste is piling up faster than we can deal with it, and that's a problem since it can break down into microplastics that pollute our water, food, and even our bodies. This review rounds up cutting-edge lab techniques—like using special chemical catalysts, light, electricity, and even microwaves—that can break old plastic down and rebuild it into valuable new materials instead of letting it sit in landfills or oceans. While these methods are still being refined for large-scale use, they offer a promising path toward turning plastic trash into useful products, which could ultimately reduce the plastic pollution that threatens both the environment and human health.
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