Sponge-supported monolithic materials of porphyrin covalent organic frameworks for selective recognition, convenient removal and extraction of Cd2+

Jin, Wei-Liang; Li, Wei; Wang, Haixian; Liu, Xiaowei; Jiang, Haiyan; Zhu, Lina; Kong, De‐Ming

doi:10.1016/j.jece.2022.107662

Cited by 27 publications

(11 citation statements)

References 64 publications

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“…To simplify the wastewater treatment operation and enable recycling, Kong et al prepared bulk monolithic materials (polyurethane sponge@COFs) through the in situ growth of hydroxyl-functionalized porphyrin COFs on dopamine-modified polyurethane sponge. 65 Based on the large pore structure and the uniform distribution of COFs on the pore surface, polyurethane sponge@COFs exhibited accelerated adsorption kinetics compared with the corresponding powder COFs. Impressively, adsorption equilibrium was achieved within 35 min, which was considerably reduced compared with that of powder COFs (∼90 min).…”

Section: ■ Environmental Applicationsmentioning

confidence: 99%

“…A deep understanding of the design principles is critical to develop reliable and robust monolithic COFs for environmental applications. Various strategies have been adopted to fabricate monolithic COFs, such as post-cross-linking , and 3D printing, ,,− as well as template-assisted ,, and substrate-assisted in situ growth methods. ,− Generally, there are three strategies for preparing monolithic COFs with hierarchical structures (Figure ). The post-cross-linking method.…”

Section: Synthesis Of Monolithic Cofs With Hierarchical Structurementioning

confidence: 99%

“…Alternatively, the in situ growth method offers a reliable and judicious method toward COF-based monoliths without pore blocking and agglomeration of powder COFs. To further simplify the synthetic procedure and facilitate large-scale production, the use of commercially available porous supports, such as cordierite monoliths, melamine foam, ,,,, cotton fiber, , polyurethane sponge, and polyimide aerogel, has been proved to be a convenient and reliable approach to obtain COF composite-based monoliths. These supports feature highly stable and porous structures, and they can be produced at large scale, promoting efficient industrialization of monolithic COFs.…”

Section: Synthesis Of Monolithic Cofs With Hierarchical Structurementioning

confidence: 99%

“…To further enhance the interaction between the substrate and COFs, premodification of the supports is often required to introduce special functional groups as binding sites. For instance, to prepare bulk COF-based monolithic materials, a polyurethane sponge was premodified with dopamine . Subsequently, the dopamine-treated sponge was immersed in a solution containing organic monomers.…”

Section: Synthesis Of Monolithic Cofs With Hierarchical Structurementioning

confidence: 99%

“…The environmental issues arising from the adverse effects of heavy metal ions have become a major concern globally . Integrating strong chelating units into the skeleton of porous materials is critical for efficiently removing metal ions from contaminated aqueous solutions. ,, Considering the diversity of organic monomers, monolithic COFs with different functional groups can be deliberately designed and prepared to satisfy practical application demands, such as the removal of heavy-metal ions, desalination of seawater, and extraction of uranium. ,,,,− …”

Section: Environmental Applicationsmentioning

confidence: 99%

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Monolithic Covalent Organic Frameworks with Hierarchical Architecture: Attractive Platform for Contaminant Remediation

et al. 2023

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The insolubility in solvents and poor processability of powder covalent organic frameworks (COFs) considerably impede their practical application. To address these issues and bridge the gap between powder COFs and their practical application, the construction of monolithic COFs has emerged as a feasible and effective solution. Monolithic COFs (i.e., macroscopic three-dimensional architectures) with hierarchical structures have attracted tremendous interest for environmental remediation and exhibited good contaminant removal performances owing to their wide distribution of pore sizes ranging from micropores to macropores, large specific surface area, tailored chemical components, and excellent chemical stability. Monolithic COFs can be either pure COFs with self-supporting structures or composites of COFs with other materials. The resulting COF-based monoliths inherit the merits of the parent powder COFs (such as tunable pore size, tailored structure, and super chemical/thermal stability) and the intriguing features of monolithic materials, such as hierarchical structure, high porosity, and easy handling, endowing them with fast mass transfer and high adsorption capacity. This review provides a comprehensive summary of the recent advances in the synthesis of monolithic COF materials. Additionally, the recent progress of their application in environmental remediation is summarized, including metal-ion removal, organic-pollutant capture, and oil–water separation. Furthermore, this review discusses the current challenges and provides future perspectives. We sincerely hope that it will contribute to the further development of COF-based materials in other fields, especially environmental remediation.

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Section: ■ Environmental Applicationsmentioning

confidence: 99%

Section: Synthesis Of Monolithic Cofs With Hierarchical Structurementioning

confidence: 99%

Section: Synthesis Of Monolithic Cofs With Hierarchical Structurementioning

confidence: 99%

Section: Synthesis Of Monolithic Cofs With Hierarchical Structurementioning

confidence: 99%

Section: Environmental Applicationsmentioning

confidence: 99%

See 3 more Smart Citations

Monolithic Covalent Organic Frameworks with Hierarchical Architecture: Attractive Platform for Contaminant Remediation

et al. 2023

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Pore Wall Engineered Polar COFs as Size‐Matched Nanotraps Enable Highly Efficient Capture of Long‐Chain Alkylamines

Jin,

Li,

Zhou

et al. 2024

Adv Funct Materials

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Long‐chain alkylamines are widely used as surfactants and inevitably cause environmental pollution. However, there is still a lack of adsorbents that can efficiently remove them due to the scarcity of available binding sites. Herein, this study demonstrates that pore wall‐engineered polar covalent organic frameworks (COFs) with tailored pore size can be used as promising nanotraps for the rapid and highly efficient capture of octadecylamine (ODA, a typical long‐chain alkylamine) from complex practical samples (e.g., salt lake brine). Under the optimized conditions, nitro‐functionalized COFs (TpPa‐NO2 and TpBD‐NO2) show much better ODA adsorption performances than unfunctionalized TpPa, and TpPa‐NO2, whose pore size matches the ODA molecule best, obtained an ODA adsorption capacity as high as 128.5 mg g−1 within 20 min. Density functional theory (DFT) calculations and molecular dynamics (MD) simulations elucidate the underlying adsorption mechanisms, revealing that COFs provide multiple interaction forces, including electrostatic, polar, van der Waals, hydrogen bond, hydrophobic, and C─H σ–π interactions, which synergistically contribute to the highly efficient capture of ODA in the 1D polar nanotraps of TpPa‐NO2. This study provides a theoretical foundation and experimental evidence for utilizing COFs as long‐chain alkylamine adsorbents and offers a strategy for designing functionally tailored COFs for environmental applications.

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Macrocycle‐Based Covalent Organic Frameworks

et al. 2023

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Macrocycles with well‐defined cavities and the ability to undergo supramolecular interactions are classical materials that have played an essential role in materials science. However, one of the most substantial barriers limiting the utilization of macrocycles is their aggregation, which blocks the active regions. Among many attempted strategies to prevent such aggregation, installing macrocycles into covalent organic frameworks (COFs), which are porous and stable reticular networks, has emerged as an ideal solution. The resulting macrocycle‐based COFs (M‐COFs) preserve the macrocycles’ unique activities, enabling applications in various fields such as single‐atom catalysis, adsorption/separation, optoelectronics, phototherapy, and structural design of forming single‐layered or mechanically interlocked COFs. The resulting properties are unmatchable by any combination of macrocycles with other substrates, opening a new chapter in advanced materials. This review focuses on the latest progress in the concepts, synthesis, properties, and applications of M‐COFs, and presents an in‐depth outlook on the challenges and opportunities in this emerging field.

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Sponge-supported monolithic materials of porphyrin covalent organic frameworks for selective recognition, convenient removal and extraction of Cd2+

Cited by 27 publications

References 64 publications

Monolithic Covalent Organic Frameworks with Hierarchical Architecture: Attractive Platform for Contaminant Remediation

Monolithic Covalent Organic Frameworks with Hierarchical Architecture: Attractive Platform for Contaminant Remediation

Pore Wall Engineered Polar COFs as Size‐Matched Nanotraps Enable Highly Efficient Capture of Long‐Chain Alkylamines

Macrocycle‐Based Covalent Organic Frameworks

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