{"title":"A Key to Crystallinity and Reusability of Covalent Organic Frameworks: Adsorption-Induced Deformation","authors":"Wei-Liang Jin, Shao-Cong Li, Hong-Zhi Zhou, Sheng-Hua Ma, Wei Li, Li−Na Zhu*, Hong-Xin Jiang and De-Ming Kong*, ","doi":"10.1021/acsmaterialslett.4c00059","DOIUrl":null,"url":null,"abstract":"<p >The design and synthesis of covalent organic frameworks (COFs) with excellent reusability are promising ways to advance practical applications in many fields, including as absorbents for environmental remediation. However, a lack of guiding principles makes it challenging. Herein, two COFs (DhaTAT and DhaTAB) are prepared and demonstrated to work excellently for the adsorption and removal of the representative environmental pollutant phenanthrene (PHE) with the highest adsorption capacity and the fastest adsorption kinetics reported so far. Although having comparable PHE adsorption performances, DhaTAT displays much better reusability than DhaTAB. By deeply exploring the underlying mechanism, we reveal for the first time the adverse effects of adsorption-induced deformation phenomenon on the crystallinity, morphology, specific surface area, and thus reusability of COFs, and propose that introducing electron-withdrawing groups can alleviate this phenomenon and endow COF-based adsorbents with excellent reusability. Such a prediction is further confirmed by the recycling performances of two new COFs (DapTFB and DanTFB) that are designed under the guidance of theoretical calculations. This study provides valuable insights into the effects of adsorption-induced deformation on the practical application potential of COFs, which is crucial for the development of new materials with stable adsorption performance and good reusability.</p>","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c00059","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The design and synthesis of covalent organic frameworks (COFs) with excellent reusability are promising ways to advance practical applications in many fields, including as absorbents for environmental remediation. However, a lack of guiding principles makes it challenging. Herein, two COFs (DhaTAT and DhaTAB) are prepared and demonstrated to work excellently for the adsorption and removal of the representative environmental pollutant phenanthrene (PHE) with the highest adsorption capacity and the fastest adsorption kinetics reported so far. Although having comparable PHE adsorption performances, DhaTAT displays much better reusability than DhaTAB. By deeply exploring the underlying mechanism, we reveal for the first time the adverse effects of adsorption-induced deformation phenomenon on the crystallinity, morphology, specific surface area, and thus reusability of COFs, and propose that introducing electron-withdrawing groups can alleviate this phenomenon and endow COF-based adsorbents with excellent reusability. Such a prediction is further confirmed by the recycling performances of two new COFs (DapTFB and DanTFB) that are designed under the guidance of theoretical calculations. This study provides valuable insights into the effects of adsorption-induced deformation on the practical application potential of COFs, which is crucial for the development of new materials with stable adsorption performance and good reusability.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.