Multifunctional metal organic framework and carbon nanotube-modified filter for combined ultrafine dust capture and SO2 dynamic adsorption

Shasha Feng, Xingya Li, Shuaifei Zhao, Yaoxin Hu, Zhaoxiang Zhong, Weihong Xing, Huanting Wang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Ultrafine dust and acid polar gas species (SO2, NOx, H2S, etc.) in the atmosphere have severe effects on human health. They are the most important indices for air quality evaluation. In this work, we developed a multifunctional, metal organic framework (MOF: UiO-66-NH2) and carbon nanotube (CNT)-modified filter for efficient ultrafine dust removal and acid gas adsorption. A thin layer of amine-functionalized CNTs was used to construct network skeletons on a polytetrafluoroethylene (PTFE) substrate and acted as an intermediate between the porous MOF nanoparticles and the PTFE substrate. The pore size of the filter was successfully regulated from 5.1 to 2.1 μm while the modified filter still had a high gas permeability of up to 402 m3 m−2 h−1 kPa−1. This well-designed multifunctional filter showed an extremely high capture efficiency (99.997%) for ultrafine dust (diameter ∼0.3 μm) and SO2 adsorption capacity in dynamic filtration. Our filter with hierarchical structures is very promising for indoor air purification.

Original languageEnglish
Pages (from-to)3023-3031
Number of pages9
JournalEnvironmental Science: Nano
Volume5
Issue number12
DOIs
Publication statusPublished - 2018

Cite this

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title = "Multifunctional metal organic framework and carbon nanotube-modified filter for combined ultrafine dust capture and SO2 dynamic adsorption",
abstract = "Ultrafine dust and acid polar gas species (SO2, NOx, H2S, etc.) in the atmosphere have severe effects on human health. They are the most important indices for air quality evaluation. In this work, we developed a multifunctional, metal organic framework (MOF: UiO-66-NH2) and carbon nanotube (CNT)-modified filter for efficient ultrafine dust removal and acid gas adsorption. A thin layer of amine-functionalized CNTs was used to construct network skeletons on a polytetrafluoroethylene (PTFE) substrate and acted as an intermediate between the porous MOF nanoparticles and the PTFE substrate. The pore size of the filter was successfully regulated from 5.1 to 2.1 μm while the modified filter still had a high gas permeability of up to 402 m3 m−2 h−1 kPa−1. This well-designed multifunctional filter showed an extremely high capture efficiency (99.997{\%}) for ultrafine dust (diameter ∼0.3 μm) and SO2 adsorption capacity in dynamic filtration. Our filter with hierarchical structures is very promising for indoor air purification.",
author = "Shasha Feng and Xingya Li and Shuaifei Zhao and Yaoxin Hu and Zhaoxiang Zhong and Weihong Xing and Huanting Wang",
year = "2018",
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language = "English",
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pages = "3023--3031",
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publisher = "The Royal Society of Chemistry",
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Multifunctional metal organic framework and carbon nanotube-modified filter for combined ultrafine dust capture and SO2 dynamic adsorption. / Feng, Shasha; Li, Xingya; Zhao, Shuaifei; Hu, Yaoxin; Zhong, Zhaoxiang; Xing, Weihong; Wang, Huanting.

In: Environmental Science: Nano, Vol. 5, No. 12, 2018, p. 3023-3031.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Feng, Shasha

AU - Li, Xingya

AU - Zhao, Shuaifei

AU - Hu, Yaoxin

AU - Zhong, Zhaoxiang

AU - Xing, Weihong

AU - Wang, Huanting

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AB - Ultrafine dust and acid polar gas species (SO2, NOx, H2S, etc.) in the atmosphere have severe effects on human health. They are the most important indices for air quality evaluation. In this work, we developed a multifunctional, metal organic framework (MOF: UiO-66-NH2) and carbon nanotube (CNT)-modified filter for efficient ultrafine dust removal and acid gas adsorption. A thin layer of amine-functionalized CNTs was used to construct network skeletons on a polytetrafluoroethylene (PTFE) substrate and acted as an intermediate between the porous MOF nanoparticles and the PTFE substrate. The pore size of the filter was successfully regulated from 5.1 to 2.1 μm while the modified filter still had a high gas permeability of up to 402 m3 m−2 h−1 kPa−1. This well-designed multifunctional filter showed an extremely high capture efficiency (99.997%) for ultrafine dust (diameter ∼0.3 μm) and SO2 adsorption capacity in dynamic filtration. Our filter with hierarchical structures is very promising for indoor air purification.

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