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Light‐Driven MXene‐Based Microrobots: Mineralization of Bisphenol A to CO2 and H2O
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Light-driven MXene-based microrobots functionalized with iron oxide and bismuth nanoparticles degraded approximately 60% of bisphenol A within 10 minutes and achieved near-complete removal within 1 hour, with over 86% of BPA fully mineralized to CO2 and water.
Light-driven magnetic MXene-based microrobots (MXeBOTs) have been developed as an active motile platform for efficiently removing and degrading bisphenol A (BPA). Light-driven MXeBOTs are facilitated with the second control engine, i.e., embedded Fe2 O3 nanoparticles (NPs) for magnetic propulsion. The grafted bismuth NPs act as cocatalysts. The effect of the BPA concentration and the chemical composition of the swimming environment on the stability and reusability of the MXeBOTs are studied. The MAXBOTs, a developed motile water remediation platform, demonstrate the ability to remove/degrade approximately 60% of BPA within just 10 min and achieve near-complete removal/degradation (≈100%) within 1 h. Above 86% of BPA is mineralized within 1 h. The photocatalytic degradation of BPA using Bi/Fe/MXeBOTs demonstrates a significant advantage in the mineralization of BPA to CO2 and H2 O.
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Researchers developed MXene-derived oxide microrobots capable of autonomously capturing nanoplastics from water using light-powered movement and magnetic collection. The self-propelled microrobots trapped nanoplastics on their surfaces and enabled subsequent electrochemical detection, offering a proof-of-concept for on-site nanoplastic screening and water remediation.
Functionalized magnetic nanoparticles: Synthesis, characterization, catalytic application and assessment of toxicity
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Researchers developed iron-based magnetic nanoparticles as catalysts that can rapidly break down bisphenol A (BPA) — a common plastic additive and endocrine disruptor — in water using a combination of low-dose hydrogen peroxide and UV light, achieving complete degradation in under 15 minutes. The treated water also showed reduced toxicity to human cancer cells, suggesting this approach could help remove persistent chemical pollutants from water supplies.
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This review examined chemical contaminants in food, including microplastics, plasticizers, and other plastic-associated chemicals, assessing dietary exposure routes and potential health effects. The review synthesizes regulatory standards and monitoring data to inform food safety risk assessments for plastic-derived contaminants.
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Researchers developed a cage-like microrobot powered by visible light and water that captures nanoplastics from solution within two minutes and detects them at low concentrations using surface-enhanced Raman scattering, with the robot recoverable via magnet for reuse.
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