Bio-Carbon Quantum Dots Modified TiO2 Nanocrystals for Photocatalytic Degradation of PLA and PET Microplastics

Photocatalytic Degradation of Macro—and Microplastics Using Titanium Dioxide (TiO₂)

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This review assessed titanium dioxide (TiO2) photocatalysis as a method for degrading macro- and microplastics, finding that UV-activated TiO2 can break polymer chains through reactive oxygen species under controlled conditions. Scalable photocatalytic degradation is a compelling remediation strategy because it can destroy microplastics rather than relocate them, potentially reducing the volume of particles available for human ingestion and environmental accumulation.

Bio-carbon quantum dot modified TiO 2 nanocrystals for photocatalytic degradation of PLA and PET microplastics

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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.

Evaluation of Microplastic Degradation Using Titanium Dioxide Photocatalyst in Water

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Researchers tested UV light and titanium dioxide photocatalysis to break down microplastic fibers in water, achieving a 97% reduction in mass within 48 hours under optimized conditions, suggesting this approach could be a viable treatment technology for wastewater facilities.

Nanotechnology-Enhanced Photocatalysis for Microplastic Degradation: A Sustainable Approach

Efficient Photocatalytic Degradation of the Persistent PET Fiber-Based Microplastics over Pt Nanoparticles Decorated N-Doped TiO2 Nanoflowers

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A photocatalytic approach using platinum-decorated nitrogen-doped TiO2 nanoflowers achieved roughly 29% weight loss in PET fiber microplastics following hydrothermal pretreatment, outperforming untreated samples by about 8-fold. This chemical degradation strategy provides a promising pathway for breaking down one of the most abundant synthetic microplastic types found in textile wastewater and urban sewage.