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61,005 resultsShowing papers similar to Different metal-doped NiO nanoparticles for sunlight-mediated degradation of low-density polyethylene microplastic films
ClearPhotocatalytic degradation of polyethylene and polystyrene microplastics by α-Fe2O3/g-C3N4
This study tested a composite photocatalyst (α-Fe2O3/g-C3N4) for degrading polyethylene and polystyrene microplastics using visible light. The catalyst caused surface cracking and oxidation of both plastic types, showing promise as a solar-powered method for breaking down microplastic pollution in water.
Photocatalytic degradation of polyethylene and polystyrene microplastics by α-Fe2O3/g-C3N4
An alpha-Fe2O3/g-C3N4 composite photocatalyst was shown to degrade both polyethylene and polystyrene microplastic films under visible light irradiation, with the photocatalyst causing surface cracking and mass loss significantly exceeding non-catalyzed controls.
First Insights into Photocatalytic Degradation of HDPE and LDPE Microplastics by a Mesoporous N–TiO2 Coating: Effect of Size and Shape of Microplastics
A nitrogen-doped titanium dioxide photocatalyst successfully degraded high-density and low-density polyethylene microplastics under visible light, with smaller particles showing greater degradation than larger ones or film-shaped particles. The study establishes a foundation for visible-light photocatalysis as a potential strategy for removing microplastics from water.
Visible-light induced degradation of diphenyl urea and polyethylene using polythiophene decorated CuFe2O4 nanohybrids
Researchers developed a new material by combining copper-iron oxide nanoparticles with a conductive polymer, then used it to break down polyethylene plastic using visible light and microwave energy. Under microwave conditions, nearly half the polyethylene degraded, offering a potential pathway for using light-driven chemistry to reduce plastic pollution.
Photocatalytic degradation of polyethylene plastics by NiAl2O4 spinels-synthesis and characterization
NiAl2O4 spinel photocatalysts were synthesized and evaluated for degrading polyethylene microplastics under light irradiation. The spinel catalysts showed photocatalytic activity against PE microplastics, contributing to the development of semiconductor-based approaches for breaking down persistent plastic pollutants in the environment.
Metal Oxide Nanoparticles Containing Clotrimazole to Suppress Photodegradation of Poly(Vinyl Chloride) Thin Films
Researchers found that blending PVC films with metal oxide nanoparticles and clotrimazole significantly reduced photodegradation, with nickel oxide proving most effective by scavenging hydrogen chloride and inhibiting peroxide formation, offering a strategy to improve PVC photostability and reduce plastic fragmentation.
Visible light driven degradation of BPA and LDPE microplastic films using GO/SCN nanocomposite
Researchers developed a graphene oxide and sulfur-doped carbon nitride nanocomposite capable of degrading both bisphenol A and low-density polyethylene microplastic films under visible light. The material achieved a 21% weight loss in LDPE films after 10 days of irradiation, along with significant surface changes. The study presents a photocatalytic approach for simultaneously breaking down microplastics and harmful organic pollutants in water using sunlight.
A Comparative Study of the Photostabilization of Polyvinyl Chloride with Nano and Micro Nickel Oxide
Researchers examined nano and micro nickel oxide (NiO) as photostabilizing additives for polyvinyl chloride (PVC) films, synthesizing NiO nanoparticles via chemical methods and characterizing them by XRD and FESEM, then testing composite PVC-NiO films under UV irradiation at doses from 0 to 300 hours. FTIR and UV-VIS spectroscopic analyses revealed differences in photodegradation behavior between nano and micro NiO additives, with implications for producing photodegradable or photostabilized PVC materials.
Mechanistic vision on polypropylene microplastics degradation by solar radiation using TiO2 nanoparticle as photocatalyst
Researchers demonstrated that titanium dioxide nanoparticles acting as a photocatalyst under sunlight can degrade polypropylene microplastics in water. After 50 hours of exposure, the microplastics lost about 50% of their weight as the sunlight-activated catalyst broke down the plastic's chemical structure. The study offers a potential approach for using solar-powered photocatalysis to address microplastic contamination in aquatic environments.
Degradation of Micro- and Nano-Plastics by Photocatalytic Methods
This paper reviews photocatalytic methods — using light-activated catalysts — as a way to break down micro- and nano-plastics in the environment. These approaches offer a promising path toward degrading persistent plastic particles that accumulate in marine and drinking water systems.
Insight into the Photodegradation of Microplastics Boosted by Iron (Hydr)oxides
Iron (hydr)oxide minerals goethite and hematite were found to significantly accelerate the photodegradation of polyethylene and polypropylene microplastics under simulated sunlight, with goethite showing greater effect due to higher hydroxyl radical production via a light-driven Fenton reaction. The study reveals a previously overlooked natural mechanism by which common soil minerals can influence the environmental fate of microplastics.
Study on the Mechanism of Molecular Weight Reduction of Polyethylene Based on Fe-Montmorillonite and Its Potential Application
Researchers investigated the mechanism by which Fe-montmorillonite accelerates polyethylene molecular weight reduction during photodegradation, finding that iron ions catalyze chain scission before oxidative degradation, offering potential for breaking down PE plastic waste.
Current Approach to Develop TiO2 Thin Film as Photocatalysts for Low-Density Plastic Degradation
This review covers titanium dioxide thin-film photocatalysts as a method for breaking down low-density polyethylene plastic waste using light energy. While photocatalysis shows promise for degrading plastic into carbon dioxide and water, challenges remain in scaling up the process and achieving complete mineralization of complex plastic materials.
Degradation of low-density polyethylene to nanoplastic particles by accelerated weathering
Researchers demonstrated that accelerated weathering of low-density polyethylene produces nanoplastic particles, providing experimental evidence for the degradation pathway from macro-plastics to nanoscale fragments in the environment.
Plastic Degrading Nanomaterials via Photocatalysis
This review examines photocatalytic degradation of plastics using nanomaterials including TiO2, ZnO, and their nanocomposites under UV and solar irradiation as an energy-efficient alternative to conventional plastic disposal methods. The paper covers reactive oxygen species-mediated breakdown of PP, PS, PVC, LDPE, and HDPE polymers and highlights nano-enabled strategies for microplastic and nanoplastic degradation.
Generation of nanoplastics during the photoageing of low-density polyethylene
Researchers studied how low-density polyethylene microplastics break down under UV light equivalent to one year of solar exposure. They found that photoageing generated large numbers of smaller particles in the 1-5 micrometer range, effectively producing nanoplastics from larger microplastic fragments. The study suggests that environmental weathering of common plastic materials continuously generates ever-smaller particles that may be harder to detect and remove.
Degradation of Microplastic Residuals in Water by Visible Light Photocatalysis
Researchers demonstrated that zinc oxide-based photocatalysts activated by visible light can degrade low-density polyethylene microplastic residues in water. This photocatalytic approach could offer an energy-efficient method for reducing microplastic contamination in aquatic environments.
Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments
This review examines how sunlight breaks down micro- and nanoplastics in the environment, changing their surface properties and making them interact differently with pollutants and living organisms. Sun-aged plastic particles can become more toxic to aquatic life and affect soil microbe communities, but many questions remain about these processes under real-world conditions.
Visible light photocatalytic degradation of microplastic residues with zinc oxide nanorods
LDPE microplastic residues were treated with zinc oxide nanorods under visible light irradiation, resulting in a 30% increase in carbonyl index and increased brittleness, demonstrating photocatalytic oxidation of the plastic surface. The study shows that ZnO nanorod photocatalysis can initiate microplastic degradation using visible light, offering a potential low-energy remediation approach.
The photochemical behaviors of microplastics through the lens of reactive oxygen species: Photolysis mechanisms and enhancing photo-transformation of pollutants
This review re-examines the photochemical degradation mechanisms of microplastics through the lens of reactive oxygen species, identifying defects in the traditional autoxidation model and exploring how microplastics can enhance the photo-transformation of co-existing pollutants.
State of the art in the photochemical degradation of (micro)plastics: from fundamental principles to catalysts and applications
This review summarizes research on the photochemical degradation of plastics and microplastics into value-added products and intermediates via photocatalysis. The study covers fundamental principles and catalytic approaches for breaking down plastic pollutants that are otherwise difficult to degrade in the environment.
Enhanced photocatalytic degradation of LDPE microplastics using TiO2-kaolinite and TiO2-montmorillonite nanomaterials
Researchers enhanced the photocatalytic degradation of low-density polyethylene (LDPE) microplastics by developing TiO2-kaolinite and TiO2-montmorillonite nanocomposite materials, testing their effectiveness as part of efforts to address the ~300 million tonnes of plastic produced annually that accumulates in the environment.
Conversion of Polyethylene to Low-Molecular-Weight Oil Products at Moderate Temperatures Using Nickel/Zeolite Nanocatalysts
Incorporating small nickel nanoparticles into zeolite catalysts allowed polyethylene — the world's most widely used plastic — to be broken down into useful low-molecular-weight oils at 350 °C, compared to the 400 °C required without a catalyst. This lower-temperature catalytic process offers a more energy-efficient route to upcycling plastic waste and reducing microplastic pollution from discarded packaging.
MXene photocatalysts for microplastics degradation under simulated solar illumination
This review examined MXene-based photocatalysts for degrading microplastics under simulated solar illumination, covering synthesis methods, photocatalytic mechanisms, and performance for polyolefin and other plastic types. MXene composites showed promising degradation efficiency for otherwise difficult-to-degrade polymers under visible light.