Polydopamine modified coconut shell biochar decorated with ZIF-8 for improved adsorption of malachite green and rhodamine B from aqueous solution

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 120933 - 120933

Published: Jan. 1, 2025

Language: Английский

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Revisiting the efficacy of COF treatment for dyes in wastewater: A comprehensive review

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 115660 - 115660

Published: Jan. 30, 2025

Language: Английский

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Advances in reticular materials for sustainable rare earth element recovery

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216199 - 216199

Published: Sept. 13, 2024

Language: Английский

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A robust amphiphilic ionic covalent organic framework intercalated into functionalized graphene oxide hybrid membranes for ultrafast extraction uranium from wastewater

Water Research, Journal Year: 2024, Volume and Issue: 265, P. 122320 - 122320

Published: Aug. 23, 2024

Language: Английский

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Linkage Microenvironment Modulation in Triazine‐Based Covalent Organic Frameworks for Enhanced Photocatalytic Hydrogen Peroxide Production

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 26, 2025

Abstract Covalent organic frameworks (COFs), known for the precise tunability of molecular structures, hold significant promise photocatalytic hydrogen peroxide (H 2 O ) production. Herein, by systematically altering quinoline (QN) linkages in triazine (TA)‐based COFs via multi‐component reactions, six R‐QN‐TA‐COFs are synthesized with identical skeletons but different substituents. The fine‐tuning optoelectronic properties and local microenvironment is allowed, thereby optimizing charge separation improving interactions dissolved oxygen. Consequently, MeO‐QN‐TA‐COF customized to achieve an impressive rate H production up 7384 µmol g⁻ 1 h⁻ under air atmosphere water without any sacrificial agents, surpassing most reported COF photocatalysts. Its high stability demonstrated through five consecutive recycling experiments characterization recovered COF. reaction mechanism further investigated using a suite quenching experiments, situ spectroscopic analysis, theoretical calculations. enhanced over 2e⁻ oxygen reduction oxidation pathways. Overall, crucial role linkage modulation design solar‐driven effective

Language: Английский

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S‐Scheme Heterojunction Fabricated from Covalent Organic Framework and Quantum Dot for Enhanced Photosynthesis of Hydrogen Peroxide from Water and Air

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Covalent organic frameworks (COFs) with stable crystalline porous structures and flexible assembly properties contribute to the direct photocatalytic synthesis of H 2 O meet growing global demand. To address challenges insufficient redox capacity photogenerated carrier recombination COFs, S‐scheme heterojunction is constructed from COFs quantum dots (QDs) improve production . Herein, 0D ZnCdS QDs (ZCS) uniformly anchor on surface a 2D conjugated tetrathiafulvalene‐based COF (TT‐COF), affording TT‐COF/ZCS. Formation effectively prevents agglomeration ZCS, modulates energy band structure TT‐COF, enhances migration carriers ability. As total consequence, optimized (TZ‐40) able afford in yield up 5171 µmol g −1 h under visible light irradiation , much higher than those for 2520 2647 The present result demonstrates great potential COFs/QDs‐based heterojunctions applications including production.

Language: Английский

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Engineering exciton dissociation and intermolecular charge transfer to boost superoxide radical in conjugated microporous polymers for simultaneous elimination of coexisting contaminants

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 156552 - 156552

Published: Oct. 11, 2024

Language: Английский

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Impact of Imine Bond Orientations and Acceptor Groups on Photocatalytic Hydrogen Generation of Donor–Acceptor Covalent Organic Frameworks

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Covalent organic frameworks (COFs) have emerged as one of the most studied photocatalysts owing to their adjustable structure and bandgaps. However, there is limited research on regulating light‐harvesting capabilities acceptor building blocks in donor–acceptor (D–A) isomer COFs with different bond orientations. This investigation crucial for elucidating structure‐property‐performance relationship COF photocatalysts. Herein, a series D–A isostructural are synthesized imine orientations using benzothiadiazole its derivatives‐based units. Extended light absorption achieved groups that strong electron‐withdrawing capacities, although this resulted decreased hydrogen generation efficiency. Photocatalytic experiments indicated dialdehyde benzothiadiazole‐based COFs, HIAM‐0015, exhibit highest rate (17.99 mmol g −1 h ), which 15 times higher than isomer. The excellent photocatalytic performance HIAM‐0015 can be attributed fast charge separation migration. work provides insights into rational design synthesis achieve efficient activity.

Language: Английский

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A robust aerogel incorporated with phthalocyanine-based porous organic polymers for highly efficient gold extraction

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129451 - 129451

Published: Aug. 31, 2024

Language: Английский

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Boosting Photoelectricity Based on Self-supported Flexible Metal-Organic Framework Arrays for Photo-Fenton like Degradation of Organic Pollutants

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Boosted adsorption and degradation of organic pollutants based on self-supported flexible metal–organic framework arrays.

Language: Английский

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