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Porous charged polymer nanosheets formed via microplastic removal from frozen ice for virus filtration and detection

Nanoscale 2022 7 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Kyoungwook Kim, Jaemin Min, Minjong Lee, Geunhong Sim, Seung Soo Oh, Moon Jeong Park

Summary

Researchers developed porous charged polymer nanosheets — created by freezing and removing microplastics from ice — that can filter viruses including SARS-CoV-2 with 96% efficiency. This innovative technique uses microplastics as a template to produce functional filtration materials while simultaneously removing plastic particles.

We developed a method for producing porous charged polymer nanosheets using frozen ice containing microplastics. Upon assessing SARS-CoV-2 filtration using nanosheets with 100 nm-sized pores, a high rejection rate of 96% was achieved. The charged surfaces of nanosheets further enabled the electrophoretic capture of the virus using a portable battery with additional real-time sensing capability.

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