Preparation of magnetic covalent triazine frameworks by ball milling for efficient removal of PFOS and PFOA substitutes from water

Wang, Jiaqiang; Shao, Haipei; Sun, Chang; Jiang, Xiangzhe; Zhou, Shuangxi; Yu, Gang; Deng, Shubo

doi:10.1039/d1en01158h

Cited by 19 publications

(12 citation statements)

References 52 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%

“…MCOFs have also been applied for the removal of several other organic compounds such as perfluorinated compounds, [123] polycyclic aromatic hydrocarbons (PAHs), [124] biotoxins, [92,131] and pesticides. [125] Perfluorinated compounds are a group of synthetic chemicals in which all hydrogens connected to carbon are replaced by fluorine atoms.…”

Section: Othersmentioning

confidence: 99%

“…In this regard, Wang et al demonstrated the feasibility of utilizing MCOF composites for the efficient capture of prefluorinated compounds in actual environmental water. [123] In their work, two CTF/Fe 3 O 4 composites were prepared using ball-milling method. The amorphous CTF2 with quaternary N groups, which act as efficient binding sites, exhibited much higher adsorption capacity than the crystalline CTF1.…”

Section: Othersmentioning

confidence: 99%

“…[ 125 ] Perfluorinated compounds are a group of synthetic chemicals in which all hydrogens connected to carbon are replaced by fluorine atoms. [ 123 ] Currently, they have been ubiquitously detected in environmental media owing to their widespread applications. Considering their persistence, harmful effects, and potential carcinogenicity, to efficiently remove them from contaminated water is in urgent need.…”

Section: Application Of Mcofs In the Adsorptive Removal Of Pollutantsmentioning

confidence: 99%

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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%

Section: Othersmentioning

confidence: 99%

Section: Othersmentioning

confidence: 99%

Section: Application Of Mcofs In the Adsorptive Removal Of Pollutantsmentioning

confidence: 99%

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Magnetic Covalent Organic Framework Composites for Wastewater Remediation

Yang

Huang

You

et al. 2023

Small

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“…1,2 Perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) are considered the most typical PFAS. 3 PFAS concentration has been reported in the range of pg L −1 to μg L −1 in marine, ground, surface, and drinking water, 4 while significantly higher concentration up to ∼1650 mg L −1 has been detected in some wastewater. 5 Notably, PFAS at concentrations of a few μg L −1 or less accumulate in organisms, and are harmful to insects, aquatic fauna, and amphibians.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Navidpour

Safaei

Zhang

et al. 2023

Environ. Sci.: Nano

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Tailoring porous organic polymers with enhanced capacity, thermal stability and surface area for perfluorooctane sulfonic acid (PFOS) elimination from water environment

Elboughdiri,

Amari,

Harharah

et al. 2023

Appl Water Sci

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Perfluorooctane sulfonic acid (PFOS), a perfluoroalkyl substance, has engendered alarm over its presence in water sources due to its intrinsic toxicity. Hence, there is a pressing need to identify efficacious adsorbents capable of removing PFAS derivatives from water. To achieve this, batch adsorption studies under various circumstances were employed to tune amorphous polymer networks regarding their morphological configuration, heat durability, surface area and capacity to adsorb PFOS in water. A facile, one-pot nucleophilic substitution reaction was employed to synthesize amorphous polymer networks using triazine derivatives as building units for monomers. Notably, POP-3 exhibited a superlative adsorption capacity, with a removal efficiency of 97.8%, compared to 90.3% for POP-7. POP-7 exhibited a higher specific surface area (SBET) of 232 m2 g−1 compared to POP-3 with a surface area of 5.2 m2 g−1. Additionally, the study emphasizes the importance of electrostatic forces in PFOS adsorption, with pH being a significant element, as seen by changes in the PFOS sorption process by both polymeric networks under neutral, basic and acidic environments. The optimal pH value for the PFOS removal process using both polymers was found to be 4. Also, POP-7 exhibited a better thermal stability performance (300 °C) compared to POP-3 (190 °C). Finally, these findings indicate the ease with which amorphous polymeric frameworks may be synthesized as robust and effective adsorbents for the elimination of PFOS from waterbodies.

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Preparation of magnetic covalent triazine frameworks by ball milling for efficient removal of PFOS and PFOA substitutes from water

Abstract: Difficult separation of covalent organic frameworks (COFs) greatly limits their application in wastewater treatment. For the first time, ball-milling method was used to prepare the recyclable magnetic covalent triazine frameworks...

Cited by 19 publications

References 52 publications

Magnetic Covalent Organic Framework Composites for Wastewater Remediation

Magnetic Covalent Organic Framework Composites for Wastewater Remediation

Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Tailoring porous organic polymers with enhanced capacity, thermal stability and surface area for perfluorooctane sulfonic acid (PFOS) elimination from water environment

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