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Delignified wood filter functionalized with metal-organic frameworks for high-efficiency air filtration.
- Source :
-
Separation & Purification Technology . Jul2022, Vol. 293, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • Wood-based air filters were fabricated and applied for air filtration. • Three MOFs were integrated into the filter matrix to boost filtering performance. • MOF decorated wood filter presents superior PM capture performance. • The PM path and capture mechanism of PMs in wood lumens are proposed. Particulate matter (PM) pullution has emerged as a global concern. Herein, delignified wood functionalized with metal–organic frameworks (MOFs) was investigated for efficient PM removal. In particular, the lignin removal was realized by a deep-eutectic-solvent assisted process. By integrating three different MOFs into the porous wood matrix, wood-based filters with hierarchical structure were fabricated. The MOF particles including ZIF-8, MOF-199 and UiO-66 were deposited on the filters through in situ growth approach, thereby leading to a uniform MOF dispersion and strong wood-MOF adhesion. The ZIF-8 functionalized wood filter exhibited the highest PM removal performance, with PM 2.5 and PM 10 removal efficiencies of 89.8% and 91.6%, respectively. The superior PM capture ability of ZIF-8@Wood is attributed to the suitable surface property and sophisticated channels/pores. The gas transport pathways and PM capture mechanisms within wood filter were discussed in detail. This cost-effective and environmentally friendly filtration device provides a novel material platform for PM removal, and it could be extended for hazardous gas capture and volatile organic compound adsorption. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13835866
- Volume :
- 293
- Database :
- Academic Search Index
- Journal :
- Separation & Purification Technology
- Publication Type :
- Academic Journal
- Accession number :
- 156778818
- Full Text :
- https://doi.org/10.1016/j.seppur.2022.121095