Amine-functionalized MOF-derived carbon materials for efficient removal of Congo red dye from aqueous solutions: simulation and adsorption studies

Hu, Na; Yu, Junzhe; Hou, Liran; Shi, Changrong; Li, Kai; Hang, Fangxue; Xie, Caifeng

doi:10.1039/d2ra06513d

Cited by 19 publications

(4 citation statements)

References 64 publications

(75 reference statements)

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“…The lone-pair electrons present in these atomic orbitals exhibit significant electronegativity, rendering them highly effective as acceptors for hydrogen bonding. 75 MOFs contains abundant hydrogen atoms, which can be regarded as donors in hydrogen bonding. Additionally, the organic ligands of MOFs contain functional groups, such as −COOH, −OH, and −NH 2 .…”

Section: ■ Possible Adsorption Mechanisms Of Mofs For Pfassmentioning

confidence: 99%

“…The structure of PFASs is rich in fluorine atoms, and most novel PFASs also incorporate ether oxygen atoms. The lone-pair electrons present in these atomic orbitals exhibit significant electronegativity, rendering them highly effective as acceptors for hydrogen bonding . MOFs contains abundant hydrogen atoms, which can be regarded as donors in hydrogen bonding.…”

Section: Possible Adsorption Mechanisms Of Mofs For Pfassmentioning

confidence: 99%

“…MOFs contains abundant hydrogen atoms, which can be regarded as donors in hydrogen bonding. Additionally, the organic ligands of MOFs contain functional groups, such as −COOH, −OH, and −NH 2 . , These functional groups can act as both hydrogen bond donors and acceptors, which is beneficial for the adsorption of PFASs on MOFs. However, the hydrogen bonding can be significantly affected by the pH level of the sample, such as strong acidity and alkalinity .…”

Section: Possible Adsorption Mechanisms Of Mofs For Pfassmentioning

confidence: 99%

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Metal–Organic Framework-Based Composites for the Adsorption Removal of Per- and Polyfluoroalkyl Substances from Water

Li,

Ma,

Cheng

et al. 2024

Langmuir

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The increasing health risks posed by per-and polyfluoroalkyl substances (PFASs) in the environment highlight the importance of implementing effective removal techniques. Conventional wastewater treatment processes are inadequate for removing persistent organic pollutants. Recent studies have increasingly demonstrated that metal−organic frameworks (MOFs) are capable of removing PFASs from water through adsorption techniques. However, there is still constructive discussion on the potential of MOFs in adsorbing and removing PFASs for large-scale engineering applications. This review systematically investigates the use of MOFs as adsorbents for the removal of PFAS in water treatment. This primarily involved a comprehensive analysis of existing literature to understand the adsorption mechanisms of MOFs and to identify factors that enhance their efficiency in removing PFASs. We also explore the critical aspects of regeneration and stability of MOFs, assessing their reusability and long-term performance, which are essential for large-scale water treatment applications. Finally, our study highlights the challenges of removing PFASs using MOFs. Especially, the efficient removal of short-chain PFASs with hydrophilicity is a major challenge, while medium-to long-chain PFASs are frequently susceptible to being captured from water by MOFs through multiple synergistic effects. The ion-exchange force may be the key to solving this difficulty, but its susceptibility to ion interference in water needs to be addressed in practical applications. We hope that this review can provide valuable insights into the effective removal and adsorption mechanisms of PFASs as well as advance the sustainable utilization of MOFs in the field of water treatment, thereby presenting a novel perspective.

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Section: ■ Possible Adsorption Mechanisms Of Mofs For Pfassmentioning

confidence: 99%

Section: Possible Adsorption Mechanisms Of Mofs For Pfassmentioning

confidence: 99%

Section: Possible Adsorption Mechanisms Of Mofs For Pfassmentioning

confidence: 99%

See 1 more Smart Citation

Metal–Organic Framework-Based Composites for the Adsorption Removal of Per- and Polyfluoroalkyl Substances from Water

Li,

Ma,

Cheng

et al. 2024

Langmuir

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show abstract

“…This interaction typically occurs when the MOF material possesses accessible functional groups capable of forming hydrogen bonds with organic pollutants. 127 π–π stacking represents another prevalent mechanism in various adsorption processes, particularly with aromatic compounds or adenine over MOF materials. π–π interactions occur between organic ligands and organic pollutants, augmenting MOFs' removal efficiency.…”

Section: Removal Of Organic Pollutants By Mofs and Their Compositesmentioning

confidence: 99%

A review of metal–organic framework (MOF) materials as an effective photocatalyst for degradation of organic pollutants

Khan,

Li,

et al. 2023

Nanoscale Adv.

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Recent Developments in Metal‐Organic Frameworks for Water Purification: A Mini Review

Rana,

Kumar,

Kaushik

et al. 2024

ChemistrySelect

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Heavy metals, pharmaceuticals, microplastics, dyes, and radionuclides in wastewater increasingly threaten environmental sustainability. Metal‐organic frameworks (MOFs) are versatile materials for mitigating these contaminants through efficient detection, capture, adsorption, and degradation. These crystalline structures, formed by combining metal ions with organic ligands, offer high surface area, tailored porosity, reproducibility, and robust chemical stability. This review compiles recent advancements in MOFs for pollutant removal, highlighting innovations in selective adsorption mechanisms for heavy metals, functionalized MOFs for pharmaceutical and microplastic removal, and enhanced photocatalytic degradation for dyes. Unique to this review is the integration of recent innovations such as ion exchange capabilities and photocatalytic degradation under visible light, addressing advanced applications that significantly enhance pollutant removal efficiency that other reviews have not covered comprehensively. The review also cites our group's recent work on a curcumin‐immobilized zeolitic imidazolate framework‐8 (Cmim@ZIF‐8) nanoprobe, demonstrating high selectivity for Fe2+ ions in water (detection limit: 7.64 μM) and its applicability in live‐cell imaging of HepG2 cells. Advanced techniques like density functional theory (DFT) simulations are employed to elucidate adsorption and degradation mechanisms, bridging theoretical insights with experimental findings. By critically evaluating these developments, the review identifies promising avenues for optimizing MOF design and advancing effective water treatment solutions.

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Amine-functionalized MOF-derived carbon materials for efficient removal of Congo red dye from aqueous solutions: simulation and adsorption studies

Abstract: Schematic diagram on the preparation of polyethyleneimine-modified MOF-derived carbon (PEI@MDC) samples and the Congo red dye adsorption process.

Cited by 19 publications

References 64 publications

Metal–Organic Framework-Based Composites for the Adsorption Removal of Per- and Polyfluoroalkyl Substances from Water

Metal–Organic Framework-Based Composites for the Adsorption Removal of Per- and Polyfluoroalkyl Substances from Water

A review of metal–organic framework (MOF) materials as an effective photocatalyst for degradation of organic pollutants

Recent Developments in Metal‐Organic Frameworks for Water Purification: A Mini Review

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