We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Micromotors of MnO2 for the Recovery of Microplastics
Summary
Researchers synthesized MnO2 particles and evaluated their use as micromotors powered by chemical reactions for the removal of microplastics from aquatic environments. The MnO2 micromotors demonstrated autonomous movement and effective capture of microplastic particles, offering a novel active remediation approach for plastic-contaminated water.
Plastics, primarily microplastics, are among the greatest pollutants in aquatic environments. Their removal and/or degradation in these environments are crucial to ensure an optimal future of these ecosystems. In this work, MnO2 particles were synthesized and characterized for the removal of polystyrene microplastics as a model. MnO2 catalyzes the peroxide reaction, resulting in the formation of oxygen bubbles that propel the pollutants to the surface, achieving removal efficiencies of up to 80%. To achieve this, hydrothermal synthesis was employed using various methods. Parameters such as MnO2, pH, microplastics, and H2O2 concentrations were varied to determine the optimal conditions for microplastics recovering. The ideal conditions for a low microplastic concentrations (10 mg L-1) are 0.2 g L-1 MnO2, 1.6% of H2O2 and 0.01 triton as a surfactant. In these conditions, the micromotors can recover approximately 80% of 300 nm sized polystyrene microplastic within 40 min.
Sign in to start a discussion.
More Papers Like This
Micromotors of MnO2 for the Recovery of Microplastics
Researchers synthesized manganese dioxide (MnO2) particles and demonstrated that these self-propelled micromotors can effectively capture polystyrene microplastics from water through physical adsorption. This offers a promising approach for microplastic removal from aquatic environments without additional chemicals.
Magnetically steerable iron oxides-manganese dioxide core–shell micromotors for organic and microplastic removals
Magnetically steerable iron oxide-manganese dioxide core-shell micromotors were developed for active removal of contaminants from water. The micromotors could be guided using an external magnetic field to collect and remove pollutants, including microplastics, in a targeted and recoverable manner.
Photocatalytic TiO2 Micromotors for Removal of Microplastics and Suspended Matter
Researchers developed titanium dioxide micromotor particles that can move autonomously using light energy and break down polystyrene microplastics through photocatalytic reactions. This active degradation approach could complement passive filtration methods for removing microplastics from contaminated water.
Photophoretic MoS2–Fe2O3 Piranha Micromotors for Collective Dynamic Microplastics Removal
Researchers developed novel MoS2-Fe2O3 micromotors that use light-driven motion to capture and degrade polystyrene microplastics in water. The micromotors demonstrated schooling behavior under solar light and achieved significant microplastic removal without requiring chemical fuel, suggesting a promising approach for environmental microplastic remediation.
A Maze in Plastic Wastes: Autonomous Motile Photocatalytic Microrobots against Microplastics
Researchers developed sunlight-powered microrobots that can autonomously navigate through water channels, capture microplastic particles, and break them down through photocatalysis. The tiny robots combine photocatalytic and magnetic materials, allowing them to self-propel under visible light and be precisely guided with magnets. The study demonstrates a novel, energy-efficient approach to actively seeking out and degrading microplastic pollution in aquatic environments.