{"title":"Facile and scalable method to synthesize MOFs/PET composite fibers for indoor VOCs adsorption","authors":"Fang Li, Zhikang Cheng, Xiang Li, Xu Zhao, Shiliang Sheng, Jianxin He","doi":"10.1016/j.seppur.2024.130007","DOIUrl":null,"url":null,"abstract":"Volatile organic compounds (VOCs) that are emitted into indoor environments pose significant risks to human health, necessitating air purification to protect individuals from VOC-induced harm. Metal–organic frameworks (MOFs) are characterized by their extensive porosity and accessible metal sites and have attracted significant interest owing to their efficacy in VOC adsorption. However, the inherent difficulty in collecting powdered MOFs hinders their practical application. Thus, integrating MOFs with textiles presents an innovative solution for overcoming these challenges. In this study, MOFs/PET composite textiles (MOFs@STP-PET) were synthesized via an in-situ growth process on polyethylene terephthalate (PET) fiber substrates using thermal crosslinking coating and pre-soaked seed hot-solvent methodologies. The capacities of the composites to adsorb and mitigate VOCs, including benzene and formaldehyde, were evaluated. The presence of carboxyl groups (–COOH) on the polyacrylic acid coating facilitated the chelation of metal ions via electrostatic interactions, providing a foundation for MOF growth. Moreover, the obtained textiles exhibited good adsorption performance. Notably, the 10 % breakthrough time of ethylbenzene on the U6N@STP-PET textile increased to 267.9 min, resulting in a maximum adsorption capacity of 4.3 mg/g. Uniformly anchored MOFs on the fiber surface ensured a high specific surface area of 292.3 m<sup>2</sup>/g, further enhancing adsorption capabilities. In addition, the textile exhibited excellent mechanical properties, with a tensile strength of approximately 20 MPa. This straightforward, effective, and scalable approach paves the way for the development of novel VOC adsorption materials and holds promise for improving indoor air quality.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.seppur.2024.130007","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Volatile organic compounds (VOCs) that are emitted into indoor environments pose significant risks to human health, necessitating air purification to protect individuals from VOC-induced harm. Metal–organic frameworks (MOFs) are characterized by their extensive porosity and accessible metal sites and have attracted significant interest owing to their efficacy in VOC adsorption. However, the inherent difficulty in collecting powdered MOFs hinders their practical application. Thus, integrating MOFs with textiles presents an innovative solution for overcoming these challenges. In this study, MOFs/PET composite textiles (MOFs@STP-PET) were synthesized via an in-situ growth process on polyethylene terephthalate (PET) fiber substrates using thermal crosslinking coating and pre-soaked seed hot-solvent methodologies. The capacities of the composites to adsorb and mitigate VOCs, including benzene and formaldehyde, were evaluated. The presence of carboxyl groups (–COOH) on the polyacrylic acid coating facilitated the chelation of metal ions via electrostatic interactions, providing a foundation for MOF growth. Moreover, the obtained textiles exhibited good adsorption performance. Notably, the 10 % breakthrough time of ethylbenzene on the U6N@STP-PET textile increased to 267.9 min, resulting in a maximum adsorption capacity of 4.3 mg/g. Uniformly anchored MOFs on the fiber surface ensured a high specific surface area of 292.3 m2/g, further enhancing adsorption capabilities. In addition, the textile exhibited excellent mechanical properties, with a tensile strength of approximately 20 MPa. This straightforward, effective, and scalable approach paves the way for the development of novel VOC adsorption materials and holds promise for improving indoor air quality.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.