期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 411, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125056
关键词
ZIF MOFs; Smart textiles; VOCs; toxics adsorption; Air purification; DFT studies
资金
- Department of Science and Technology, Govt. of India
- Resil Chemical Pvt. Ltd., Bengaluru
The functionalization of cotton fabrics with MOFs such as ZIF-8 and ZIF-67 allows for high adsorption capacity of organic pollutants from ambient air, with uniform attachment and wash durability. These fabrics have potential applications as protective textiles, anti-odor clothing, air purification filters, and related products, as they can be regenerated and reused without any decrease in adsorption capacity.
Organic pollutants, with their increasing concentrations in the ambient air, are posing a severe threat to human health. Metal-organic frameworks (MOFs), due to their active functionalities and porous nature, have emerged as potential materials for the capture of organic pollutants and cleaning of the environment/air. In this work, the functionalization of cotton fabric is reported by the in-situ growth of zeolitic imidazolate framework (ZIF-8 and ZIF-67) MOFs on carboxymethylated cotton (CM Cotton) by employing a rapid and eco-friendly approach. The physicochemical characterization of the MOF functionalized fabrics (ZIF-8@CM Cotton and ZIF-67@CM Cotton) revealed uniform and wash durable attachment of porous ZIF nanocrystals on the surface of the fabric. These ZIF functionalized fabrics possessed high surface area and have been observed to adsorb significantly high concentrations of organic pollutants such as aniline, benzene, and styrene from ambient air. Interestingly these fabrics could be regenerated and reused repeatedly without any deterioration in their adsorption capacity. The negative and low binding energies calculated by DFT confirmed the physisorption of the aromatic pollutants on the surface of MOF functionalized fabrics. Such fabrics have a huge potential as protective textiles, anti-odor clothing, air purification filters, and related products.
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