We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Complete Photocatalytic Mineralization of Microplastic on TiO2 Nanoparticle Film
Summary
Scientists tested TiO2 nanoparticle films as a photocatalytic treatment for microplastics and found complete mineralization of polystyrene and polyethylene microspheres under UV irradiation, offering a potential destruction pathway for microplastic pollution.
Recently, the environmental impacts of microplastics have received extensive attention owing to their accumulation in the environment. However, developing efficient technology for the control and purification of microplastics is still a big challenge. Herein, we investigated the photocatalytic degradation of typical microplastics such as polystyrene (PS) microspheres and polyethylene (PE) over TiO nanoparticle films under UV light irradiation. TiO nanoparticle film made with Triton X-100 showed complete mineralization (98.40%) of 400-nm PS in 12 h, while degradation for varying sizes of PS was also studied. PE degradation experiment presented a high photodegradation rate after 36 h. CO was found as the main end product. The degradation mechanism and intermediates were studied by in situ DRIFTS and HPPI-TOFMS, showing the generation of hydroxyl, carbonyl, and carbon-hydrogen groups during the photodegradation of PS. This study provides a green and cost-efficient strategy for the control of microplastics contamination in the environment.