Efficient Adsorption and Removal of Congo Red from Aqueous Solution Using Magnetic Covalent Organic Framework Nanocomposites

Lu, Sufen; Wei, Yunjiao; Long, Shuixian; Chen, Ziyan; Chen, Feixia; Lin, Haoran; Lu, Junyu

doi:10.1002/slct.202203621

Cited by 5 publications

(1 citation statement)

References 60 publications

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“…[27,86,113] Due to the strong interactions such as π-π interaction, hydrogen bonding, and electrostatic interaction, COFs have been recognized as one of the most promising adsorbents for organic pollutants removal. [28,114] MCOFs, which inherit the exceptional properties of COFs, have also been widely exploited for removing dyes, [46,59,115] pharmaceuticals, [44,99,[116][117][118] endocrine disrupting compounds (EDCs), [39,60,75,[119][120][121] perfluorinated compounds, [67,103,122,123] and other organic pollutants. [124,125] Table 2 summarizes the characteristics of selected MCOFs and their adsorption performance in capturing various organic pollutants.…”

Section: Organic Pollutantsmentioning

confidence: 99%

Magnetic Covalent Organic Framework Composites for Wastewater Remediation

Yang

Huang

You

et al. 2023

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Covalent organic frameworks (COFs) with high specific surface area, tailored structure, easy functionalization, and excellent chemical stability have been extensively exploited as fantastic materials in various fields. However, in most cases, COFs prepared in powder form suffer from the disadvantages of tedious operation, strong tendency to agglomerate, and poor recyclability, greatly limiting their practical application in environmental remediation. To tackle these issues, the fabrication of magnetic COFs (MCOFs) has attracted tremendous attention. In this review, several reliable strategies for the fabrication of MCOFs are summarized. In addition, the recent application of MCOFs as outstanding adsorbents for the removal of contaminants including toxic metal ions, dyes, pharmaceuticals and personal care products, and other organic pollutants is discussed. Moreover, in‐depth discussions regarding the structural parameters affecting the practical potential of MCOFs are highlighted in detail. Finally, the current challenges and future prospects of MCOFs in this field are provided with the expectation to boost their practical application.

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Section: Organic Pollutantsmentioning

confidence: 99%

Magnetic Covalent Organic Framework Composites for Wastewater Remediation

Yang

Huang

You

et al. 2023

Small

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Tuning the Topology of Two‐Dimensional Covalent Organic Frameworks through Site‐Selective Synthetic Strategy

Wu,

Tang,

Zhang

et al. 2024

Chemistry A European J

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Tuning the topology of two‐dimensional (2D) covalent organic frameworks (COFs) is of paramount scientific interest but remains largely unexplored. Herein, we present a site‐selective synthetic strategy that enables the tuning of 2D COF topology by simply adjusting the molar ratio of an amine‐functionalized dihydrazide monomer (NH2‐Ah) and 4,4',4''‐(1,3,5‐triazine‐2,4,6‐triyl)tribenzaldehyde (Tz). This approach resulted in the formation of two distinct COFs: a clover‐like 2D COF with free amine groups (NH2‐Ah‐Tz) and a honeycomb‐like COF without amine groups (Ah‐Tz). Both COFs exhibited good crystallinity and moderate porosity. Remarkably, the clover‐shaped NH2‐Ah‐Tz COF, with abundant free amine groups, displayed significantly enhanced adsorption capacities toward crystal violet (CV, 261 mg/g) and congo red (CR, 1560 mg/g) compared to the nonfunctionalized honeycomb‐like Ah‐Tz COF (123 mg/g for CV and 1340 mg/g for CR), underscoring the pivotal role of free amine functional groups in enhancing adsorption capacities for organic dyes. This work highlights that the site‐selective synthetic strategy paves a new avenue for manipulating 2D COF topology by adjusting the monomer feeding ratio, thereby modulating their adsorption performances toward organic dyes.

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