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High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene

This study demonstrates a novel application of laser-induced graphene (LIG) as a reusable conductive particulate matter (PM) filter. Four types of LIG-based filters were fabricated based on the laser-induced pyrolysis of thin polyimide (PI) sheets, each pyrolyzed on either a single side or both side...

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Autores principales: Nguyen, Anh-Phan, Kang, Won-Kyu, Lee, Jung-Bae, In, Jung-Bin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8509409/
https://www.ncbi.nlm.nih.gov/pubmed/34639946
http://dx.doi.org/10.3390/ma14195551
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author Nguyen, Anh-Phan
Kang, Won-Kyu
Lee, Jung-Bae
In, Jung-Bin
author_facet Nguyen, Anh-Phan
Kang, Won-Kyu
Lee, Jung-Bae
In, Jung-Bin
author_sort Nguyen, Anh-Phan
collection PubMed
description This study demonstrates a novel application of laser-induced graphene (LIG) as a reusable conductive particulate matter (PM) filter. Four types of LIG-based filters were fabricated based on the laser-induced pyrolysis of thin polyimide (PI) sheets, each pyrolyzed on either a single side or both sides, with or without densification. The LIG filters exhibited a high removal efficiency while maintaining minimal pressure drop compared to a commercial fiberglass filter. The densified LIG (dLIG) filters displayed a higher PM(2.5) removal efficiency (>99.86%) than regular LIG filters. The dLIG filters also exhibited excellent durability when tested for washability by ultrasonication in tap water. After being cleaned and left to dry, the structures of the dLIG filters were well-maintained; their filtration efficiencies were also well-maintained (less than a 7% change in PM(2.5) removal efficiency), and their resistances only marginally increased (less than a 7% increase after five uses). These results demonstrate the robustness and reusability of the dLIG filters and the accessibility of their cleaning (not requiring aggressive cleaning agents). These promising features will enable the application of LIG in economical, scalable, and high-performance air cleaning.
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spelling pubmed-85094092021-10-13 High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene Nguyen, Anh-Phan Kang, Won-Kyu Lee, Jung-Bae In, Jung-Bin Materials (Basel) Article This study demonstrates a novel application of laser-induced graphene (LIG) as a reusable conductive particulate matter (PM) filter. Four types of LIG-based filters were fabricated based on the laser-induced pyrolysis of thin polyimide (PI) sheets, each pyrolyzed on either a single side or both sides, with or without densification. The LIG filters exhibited a high removal efficiency while maintaining minimal pressure drop compared to a commercial fiberglass filter. The densified LIG (dLIG) filters displayed a higher PM(2.5) removal efficiency (>99.86%) than regular LIG filters. The dLIG filters also exhibited excellent durability when tested for washability by ultrasonication in tap water. After being cleaned and left to dry, the structures of the dLIG filters were well-maintained; their filtration efficiencies were also well-maintained (less than a 7% change in PM(2.5) removal efficiency), and their resistances only marginally increased (less than a 7% increase after five uses). These results demonstrate the robustness and reusability of the dLIG filters and the accessibility of their cleaning (not requiring aggressive cleaning agents). These promising features will enable the application of LIG in economical, scalable, and high-performance air cleaning. MDPI 2021-09-24 /pmc/articles/PMC8509409/ /pubmed/34639946 http://dx.doi.org/10.3390/ma14195551 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nguyen, Anh-Phan
Kang, Won-Kyu
Lee, Jung-Bae
In, Jung-Bin
High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene
title High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene
title_full High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene
title_fullStr High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene
title_full_unstemmed High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene
title_short High-Performance Washable PM(2.5) Filter Fabricated with Laser-Induced Graphene
title_sort high-performance washable pm(2.5) filter fabricated with laser-induced graphene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8509409/
https://www.ncbi.nlm.nih.gov/pubmed/34639946
http://dx.doi.org/10.3390/ma14195551
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