Electric Field-Driven Air Purification Filter for High Efficiency Removal of PM2.5 and SO2: Local Electric Field Induction and External Electric Field Enhancement

Jian Li; Qingyun Sun; Zhongxin Ping; Yihong Gao; Peiyu Chen; Fangzhi Huang

doi:10.3390/atmos13081260

Atmosphere (Aug 2022)

Electric Field-Driven Air Purification Filter for High Efficiency Removal of PM2.5 and SO2: Local Electric Field Induction and External Electric Field Enhancement

Jian Li,
Qingyun Sun,
Zhongxin Ping,
Yihong Gao,
Peiyu Chen,
Fangzhi Huang

Affiliations

Jian Li: Department of Chemical and Chemical Engineering, Hefei Normal University, Hefei 230601, China
Qingyun Sun: Lab of Clean Energy & Environmental Catalysis, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
Zhongxin Ping: Lab of Clean Energy & Environmental Catalysis, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
Yihong Gao: Lab of Clean Energy & Environmental Catalysis, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
Peiyu Chen: Lab of Clean Energy & Environmental Catalysis, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
Fangzhi Huang: Lab of Clean Energy & Environmental Catalysis, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China

DOI: https://doi.org/10.3390/atmos13081260
Journal volume & issue: Vol. 13, no. 8
p. 1260

Abstract

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Removal rate and durability are the two most important parameters of an ideal air purification filter to remove inhalable particles and toxic gases. Here, based on the interaction of a local electric field and an external electric field, a novel coaxial core–shell CuO@NH2-MIL-53(Al) nanowire array was synthesized on a rigid copper net, which was used to remove PM2.5 and SO2 simultaneously. The removal rates of PM2.5 by the filter with and without an external electric field can reach 98.72% and 44.41%, respectively, and the adsorption capacity of SO2 can reach 4.87 mol/m2. After repeated filtration and cleaning for 10 cycles, the air pollution removal efficiency can be kept almost stable.

Published in Atmosphere

ISSN: 2073-4433 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Physics: Meteorology. Climatology
Website: http://www.mdpi.com/journal/atmosphere/

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