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61,005 resultsShowing papers similar to Indirect daylight oxidative degradation of polyethylene microplastics by a bio-waste modified TiO2-based material
ClearMechanistic 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.
Low environmental impact remediation of microplastics: Visible-light photocatalytic degradation of PET microplastics using bio-inspired C,N-TiO2/SiO2 photocatalysts
Researchers developed a new light-powered cleaning method using modified titanium dioxide to break down PET microplastics in water. The process works under visible light at room temperature, making it more practical and environmentally friendly than other cleanup approaches. This matters because PET is one of the most common plastics found polluting waterways.
TiO₂-based photocatalytic degradation of microplastics in water: Current status, challenges and future perspectives
This review examines how titanium dioxide-based materials can break down microplastics in water using light energy, generating reactive molecules that dismantle plastic polymer chains. While promising, the technology still faces challenges with efficiency and potential harmful byproducts, and more research is needed before it can be used at scale to clean microplastics from real-world water supplies.
Photodegradation of polyethylene debris in water by sulfur-doped TiO2: system optimization, degradation mechanism, and reusability
This study optimized the photodegradation of polyethylene bag debris in water using sulfur-doped titanium dioxide as a photocatalyst, finding that controlling pH, catalyst dose, and polyethylene concentration improved degradation efficiency. The results offer a promising approach for breaking down plastic waste in water environments.
Low Environmental Impact Remediation of Microplastics: Visible-Light Photocatalytic Degradation of PET Microplastics Using Bio-Inspired C,N-TiO2/SiO2 Photocatalysts
Researchers developed bio-inspired carbon and nitrogen co-doped TiO2/SiO2 photocatalysts capable of degrading PET microplastics under visible light, offering a low-energy alternative to UV-based photocatalysis for remediating microplastic contamination in aquatic environments.
Unravelling the photocatalytic degradation of polyethylene microplastics with TiO2 under UV light: Evidence from kinetic studies
Researchers demonstrated that a titanium dioxide photocatalyst under UV light can break down polyethylene microplastics, achieving 34% mass loss in 8 hours and up to 54% over five treatment cycles. The process physically shrank the particles and chemically transformed them into simpler compounds like short-chain acids and carbon dioxide. While not yet ready for large-scale use, this technology could eventually help degrade microplastics in water treatment systems.
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.
Integration of Photocatalysis and Membrane Technology as a Hybrid System for Microplastic Degradation in Wastewater
Researchers evaluated a hybrid system combining TiO2 photocatalysis with membrane filtration for degrading microplastics in wastewater. The photocatalytic membrane reactor demonstrated effective removal and degradation of polyethylene, polypropylene, and PET microplastics, suggesting that integrated photocatalytic-membrane systems could improve microplastic removal beyond what conventional wastewater treatment achieves.
Photocatalytic degradation of polyethylene microplastics by copper-doped titanium dioxide nanoparticles
Researchers investigated photocatalytic degradation of polyethylene microplastics using copper-doped titanium dioxide nanoparticles as an efficient approach to breaking down aquatic plastic pollution, addressing the limitations of conventional removal methods that only achieve surface-level reduction.
Investigation of the efficiency of several TiO2 microstructures for the photocatalytic degradation of nanoplastics.
Researchers tested the efficiency of multiple titanium dioxide microstructures for photocatalytic degradation of nanoplastics in aquatic environments, addressing the growing problem of sub-micron plastic fragments in global water systems. TiO2-based photocatalysis showed varying effectiveness depending on catalyst structure and particle properties.
Microplastic Pollutant Degradation in Water Using Modified TiO2 Photocatalyst Under UV-Irradiation
This study tested modified titanium dioxide (TiO2) photocatalysts for their ability to degrade microplastic pollutants in water using light-driven oxidation. Modified TiO2 showed improved photocatalytic activity against microplastics compared to unmodified TiO2, which suffers from limited efficiency under visible light.
Degradation of Emerging Plastic Pollutants from Aquatic Environments Using TiO2 and Their Composites in Visible Light Photocatalysis
This review examines how titanium dioxide-based photocatalysts can degrade microplastics and nanoplastics under visible light conditions. Researchers found that while some composite materials achieved complete degradation of polystyrene particles, overall effectiveness remains limited at the laboratory scale. The study identifies key challenges and proposes future directions for developing more efficient photocatalytic approaches to plastic pollution remediation in water.
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.
Investigation of the efficiency of several TiO2 microstructures for the photocatalytic degradation of nanoplastics.
This study tested the efficiency of several TiO2 microstructures as photocatalysts for degrading nanoplastics in aquatic environments. Results identified the most effective TiO2 configurations for breaking down sub-micron plastic fragments under light exposure.
Advanced TiO2-based catalysts for polypropylene degradation in aquatic media
Researchers developed TiO2-based catalysts enhanced with zinc and cerium oxides to degrade polypropylene microplastics in water under UV light. The best-performing catalyst achieved roughly 6-8% degradation of microplastic surface area, with slightly lower effectiveness in wastewater compared to pure water. The study demonstrates a photocatalytic approach to breaking down one of the most common microplastics found in aquatic environments.
Surface hydroxyl-rich BiOCl/TiO2 and microwave pretreatment synergistically promote photocatalytic degradation of high density polyethylene microplastics
Researchers developed a novel approach combining a surface hydroxyl-rich photocatalyst with microwave pretreatment to break down high-density polyethylene microplastics. The combined method achieved a 63% weight loss of the microplastics within 20 hours, roughly tripling the degradation rate compared to individual catalysts alone. The study suggests that disrupting the crystalline structure of plastics before photocatalytic treatment significantly improves their breakdown under mild conditions.
Recent advances and protocol summaries for degradation of polyethylene microplastics using TiO 2 ‐based photocatalysts
This review summarizes recent advances in using TiO2-based photocatalysts to degrade polyethylene microplastics. Researchers examined the mechanisms of photocatalytic degradation and compared degradation efficiencies across studies, noting that wide variation in experimental conditions makes direct comparisons challenging. The study aims to contribute to establishing standardized laboratory protocols for photocatalytic microplastic degradation research.
Bio-carbon quantum dot modified TiO 2 nanocrystals for photocatalytic degradation of PLA and PET microplastics
Researchers developed a photocatalyst by modifying titanium dioxide nanocrystals with bio-based carbon quantum dots to degrade PET and PLA microplastics under visible light. The composite achieved degradation rates of 28.9% for PET and 59.8% for PLA microplastics within 48 hours in alkaline conditions. The study demonstrates a promising approach for breaking down common microplastic pollutants using sunlight-driven catalysis.
Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics
This review covers how metal oxide materials, such as titanium dioxide and zinc oxide, can be used as photocatalysts to break down microplastics using sunlight. Some approaches can even convert plastic waste into useful fuels and chemicals. The technology offers a promising eco-friendly strategy for cleaning microplastics from water and wastewater systems.
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.
TiO2-based photocatalysts for the degradation of microplastics in aquatic environments
Researchers synthesized TiO2-based photocatalysts via sol-gel and hydrothermal methods and characterized their morphology and photocatalytic properties for the degradation of microplastics in aqueous environments, optimizing catalyst formulations to improve efficiency and assessing their potential as an environmentally friendly advanced treatment for waterborne microplastic pollution.
Microplastic pollution reduction by a carbon and nitrogen-doped TiO2: Effect of pH and temperature in the photocatalytic degradation process
Scientists tested a carbon and nitrogen-doped TiO2 photocatalyst for degrading microplastics and found that degradation efficiency depended strongly on pH and temperature, with optimal conditions achieving significant surface mineralization of tested polymer types.
Advances in Photocatalytic Degradation of Emerging Microplastics: A Systematic Review
This systematic review summarizes advances in using light-activated chemical processes to break down microplastics in the environment. The research shows that photocatalysis, especially using titanium dioxide, is a promising method for destroying microplastics without creating harmful byproducts, though more work is needed to speed up the process for real-world use.
Modified TiO2 and ZnO photocatalysts for microplastic degradation: mechanisms, challenges, and recent advances
This review examines recent advances in using modified titanium dioxide and zinc oxide photocatalysts to degrade microplastics in the environment. Researchers summarized the mechanisms by which these catalysts break down plastic particles when activated by light, as well as the challenges that remain for practical application. The study suggests that photocatalytic degradation is a promising approach for addressing microplastic pollution, though significant technical hurdles still need to be overcome.