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MOF Catalysts for Plastic Depolymerization
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This review article examines how metal-organic frameworks (MOFs) — highly porous, engineered materials — can be used as catalysts to break down plastic waste into useful chemicals through processes like hydrogenolysis, pyrolysis, and enzymatic hydrolysis. Beyond large-scale plastic recycling, MOFs also show promise for capturing and degrading microplastics from wastewater. The authors highlight MOFs' key advantages: their structure can be precisely engineered, they are reusable, and they can accommodate a wide range of plastic types. This is primarily a materials chemistry paper relevant to long-term solutions for plastic waste and microplastic remediation.
Abstract Depolymerization is a promising solution to address the escalating global plastic waste crisis, as a key enabler for emerging technologies in chemical upcycling and closed‐loop recycling of plastics. By virtue of their unparalleled bottom‐up designability for structural control, stability, reactivity, and compatibility with catalytically‐active metal nanoparticles and enzymes, MOFs have enormous potential as an emerging class of porous heterogeneous catalysts for plastics depolymerization. Herein, we highlight key considerations and advances in MOF catalyst development and design for a range of depolymerization reactions, including alcoholysis, hydrogenolysis, pyrolysis, photocatalytic oxidation, and enzymatic hydrolysis. Other than enabling MOFs to efficiently depolymerize the most abundant plastics in production today, including those with unreacted C─C backbones (e.g., polyolefins) and polymers with cleavable backbone linkages (e.g., polyesters), their versatility also extends to emerging applications in microplastic capture and degradation from wastewater. These unique properties of MOFs position them as potentially scalable and reusable heterogeneous catalysts that can complement existing inorganic catalysts for practical depolymerization.
More Papers Like This
MOF Catalysts for Plastic Depolymerization
AI summary Read the abstract
This review highlights how metal-organic frameworks (MOFs), a class of highly customizable porous materials, can be used as catalysts to break down plastic waste into reusable chemical building blocks. MOFs offer advantages over traditional recycling methods because they can be precisely designed to target specific plastic types. While focused on plastic waste solutions rather than health effects, this technology could help reduce the amount of plastic that eventually breaks down into microplastics in the environment.
Unlocking the Potential of MOFs for Waste Plastic Resource Utilization and Microplastic Pollution Control
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This review examines the potential of metal-organic frameworks (MOFs) — a class of highly porous, engineered materials — to serve as catalysts for both breaking down microplastic pollution and converting waste plastic into valuable chemical feedstocks. MOFs offer tunable structures and large surface areas that make them attractive for both degradation and upcycling applications. The review positions MOF-enabled catalysis as a tool for transitioning toward a circular plastics economy where waste plastic becomes a resource rather than a pollutant.
A review on microplastics degradation with MOF: Mechanism and action
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This review examines how metal-organic frameworks (MOFs) can be used to break down microplastics through various mechanisms including hydrolysis, oxidation, and photodegradation. Researchers found that MOFs' large surface area and tunable pore sizes make them well-suited for capturing and degrading microplastic particles. While the field is still in its early stages, the study suggests that MOF-based approaches could represent a significant step forward in addressing microplastic pollution.
When microplastics/plastics meet metal–organic frameworks: turning threats into opportunities
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This review examines how metal-organic frameworks (MOFs) can be used to address microplastic pollution through adsorption, degradation, and even creative reuse. Researchers found that MOF materials can capture over 90% of microplastic particles and can also break down various plastics into valuable small molecules through thermal and light-driven catalysis. The study suggests that waste plastics can even be repurposed as building blocks for new MOF materials, turning an environmental threat into a resource.
Metal–Organic Framework based on Functional Materials for Photocatalytic Degradation of Micro‐ and Nano‐Plastic
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Researchers reviewed how metal-organic frameworks (MOFs) — highly porous crystalline materials with extremely large surface areas — can be used as light-activated catalysts to break down microplastics and nanoplastics in water, potentially converting these persistent pollutants into less harmful chemicals while generating clean energy as a byproduct.
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