Engineering Carbon Nanotube‐Based Photoactive COF to Synergistically Arm a Multifunctional Antibacterial Hydrogel DOI
Xiaojun Lin, Meng Zhang, Wenxin Lv

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 34(11)

Опубликована: Дек. 6, 2023

Abstract Enhancing the covalent organic framework (COF)’s photocatalytic ability synergistically with gelling formulations remains an urgent challenge for extended bio‐applications. Herein, COF is homogeneously coated on oxidized carbon nanotube (OCNT) and coordinated by Fe 3+ to obtain tubular nanocomplex OCNT@COF‐Fe (O@CF). The results showed that photodynamic reactive oxygen species (ROS) generation of O@CF enhanced due wrapped OCNT , which can respectively serve as intermolecular charge transfer channel electron acceptors/substrates (O 2 H O) adsorbent narrow energy band gaps, increase light absorption, decrease photogenerated carrier recombination. Synergistically, exhibited pH‐dependent peroxidase catalase activities, further ROS relieved hypoxia, respectively. Meanwhile, possessed degradation coatings‐dependent photothermal performances. Then, evenly incorporated into Schiff base hydrogel via coating‐participated cross‐linking, electroconductive OCNT@COF‐Fe@Gel (O@CF@G). This O@CF@G not only improve mechanical properties pure gel but also inherit multifunction O@CF. Consequently, it well adhere diabetic wounds imbibition, drug‐resistant biofilm elimination, gram‐positive negative bacteria killing, hypoxia alleviation, intercellular electrical signal conduction, thus accelerating wound healing.

Язык: Английский

Emerging MOFs, COFs, and their derivatives for energy and environmental applications DOI Creative Commons
Xinyue Zhang, Mengfan Yan,

Pei Chen

и другие.

The Innovation, Год журнала: 2025, Номер 6(2), С. 100778 - 100778

Опубликована: Янв. 18, 2025

Traditional fossil fuels significantly contribute to energy supply, economic development, and advancements in science technology. However, prolonged extensive use of has resulted increasingly severe environmental pollution. Consequently, it is imperative develop new, clean, pollution-free sources with high density versatility as substitutes for conventional fuels, although this remains a considerable challenge. Simultaneously, addressing water pollution critical concern. The design, optimization functional nanomaterials are pivotal advancing new solutions pollutant remediation. Emerging porous framework materials such metal-organic frameworks (MOFs) covalent organic (COFs), recognized exemplary crystalline materials, exhibit potential applications due their specific surface area, adjustable pore sizes structures, permanent porosity, customizable functionalities. This work provides comprehensive systematic review the MOFs, COFs, derivatives emerging technologies, including oxygen reduction reaction, evolution hydrogen lithium-ion batteries, remediation carbon dioxide reaction management. In addition, strategies performance adjustment structure-effect relationships these explored. Interaction mechanisms summarized based on experimental discussions, theoretical calculations, advanced spectroscopy analyses. challenges, future prospects, opportunities tailoring presented.

Язык: Английский

Процитировано

25
Merging benzotrithiophene covalent organic framework photocatalysis with TEMPO for selective oxidation of organic sulfides DOI

Fengwei Huang,

Yuexin Wang,

Xiaoyun Dong

и другие.

Science China Chemistry, Год журнала: 2023, Номер 66(11), С. 3290 - 3296

Опубликована: Июнь 25, 2023

Язык: Английский

Процитировано

34
Rational Regulation of the Exciton Effect of Acrylonitrile-Linked Covalent Organic Framework toward Boosting Visible-Light-Driven Hydrogen Evolution DOI

Xingyue Gao,

Jiayu Yuan,

Ping Wei

и другие.

ACS Catalysis, Год журнала: 2023, Номер 14(1), С. 533 - 546

Опубликована: Дек. 23, 2023

Covalent organic frameworks (COFs) exhibit relatively inefficient exciton dissociation and free charge generation, which arise from their high binding energy. Here, a series of crystalline, acrylonitrile-linked COFs are fabricated to regulate effects by strategies shortening the linker length (TP-PN COF), introducing nitrogen atoms (TP-BPyN post-protonation PCOF). The temperature-dependent photoluminescence (PL) spectra Nyquist plots reveal decrease in energy transfer resistance TP-PN COF, TP-BPyN PCOF. Thus, an increase carrier generation extension lifetime achieved, as demonstrated transient photocurrents response time-resolved fluorescence (TRFS). DFT calculation reveals that low could relate higher planarity structure. Besides, light absorption performance was improved length, while distribution density Pt nanoparticles H2 evolution reaction (HER) sites significantly anchor points. As result, optimized COF show efficient photocatalytic HER rates 10,890 6457 μmol g–1 h–1, respectively, 13.92 8.26 times compared without modification (TP-BPN 782 h–1). Through simple strategy, is redistributed structural distortion reduced. Consequently, rate PCOF increased 12,276 h–1. Meanwhile, further boosted 15,929 22,438 h–1 optimizing volume fractions sacrificial agent pH system, respectively. This work pave way for developing photocatalysts via rational regulation effect.

Язык: Английский

Процитировано

33
Advances of functionalized bipyridine-based covalent-organic frameworks for boosting photocatalysis DOI
Wei Liu, Yang Zhang, Jiao Wang

и другие.

Coordination Chemistry Reviews, Год журнала: 2024, Номер 516, С. 215997 - 215997

Опубликована: Июнь 5, 2024

Язык: Английский

Процитировано

16
Benzotrithiophene-based covalent organic frameworks as efficient catalysts for artificial photosynthesis of H2O2 in pure water DOI
Mingjie Liu,

Peipei He,

Hantao Gong

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 148922 - 148922

Опубликована: Янв. 20, 2024

Язык: Английский

Процитировано

15
Azobenzene‐bridged Covalent Organic Frameworks Boosting Photocatalytic Hydrogen Peroxide Production from Alkaline Water: One Atom Makes a Significant Improvement DOI

Huihui Sun,

Zhi‐Bei Zhou,

Yubin Fu

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(48)

Опубликована: Авг. 13, 2024

Abstract Covalent organic frameworks (COFs) have been demonstrated as promising photocatalysts for hydrogen peroxide (H 2 O ) production. However, the construction of COFs with new active sites, high photoactivity, and wide‐range light absorption efficient H production remains challenging. Herein, we present synthesis a novel azobenzene‐bridged 2D COF (COF‐TPT‐Azo) excellent performance on photocatalytic under alkaline conditions. Notably, although COF‐TPT‐Azo differs by only one atom (−N=N− vs. −C=N−) from its corresponding imine‐linked counterpart (COF‐TPT‐TPA), exhibits significantly narrower band gap, enhanced charge transport, prompted photoactivity. Remarkably, when employed metal‐free photocatalyst, achieves rate up to 1498 μmol g −1 h at pH = 11, which is 7.9 times higher than that COF‐TPT‐TPA. Further density functional theory (DFT) calculations reveal −N=N− linkages are sites photocatalysis. This work provides prospects developing high‐performance COF‐based photocatalysts.

Язык: Английский

Процитировано

15
Identification of two-dimensional covalent organic frameworks with mcm topology and their application in photocatalytic hydrogen evolution DOI Creative Commons

Peng‐Ju Tian,

Xianghao Han,

Qiao-Yan Qi

и другие.

Chemical Science, Год журнала: 2024, Номер 15(25), С. 9669 - 9675

Опубликована: Янв. 1, 2024

Three porphyrin-based covalent organic frameworks (COFs) are synthesized. Their structures exclusively composed of pentagonal pores, giving rise to mcm topology. The COFs exhibit high performance in photocatalytic hydrogen evolution from water.

Язык: Английский

Процитировано

12
Electron-parking engineering assisted ZnIn2S4/Mo2TiC2-Ru photocatalytic hydrogen evolution for efficient solar energy conversion and storage DOI

Qing Xi,

Jianxin Liu,

Fangxia Xie

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 355, С. 124184 - 124184

Опубликована: Май 10, 2024

Язык: Английский

Процитировано

11
Reticular Materials for Photocatalysis DOI
Kang Sun, Yunyang Qian, Dandan Li

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 27, 2024

Abstract Photocatalysis leverages solar energy to overcome the thermodynamic barrier, enabling efficient chemical reactions under mild conditions. It can greatly reduce reliance on traditional sources and has attracted significant research interest. Reticular materials, including metal‐organic frameworks (MOFs) covalent organic (COFs), represent a class of crystalline materials constructed from molecular building blocks linked by coordination bonds, respectively. function as heterogeneous catalysts, combining well‐defined structures high tailorability akin homogeneous catalysts. In this review, regulation light absorption, charge separation, surface in photocatalytic process through precise molecular‐level design based features reticular is elaborated. Notably, for MOFsmicroenvironment modulation around catalytic sites affects performance delved, with emphasis their unique dynamic flexible microenvironments. For COFs, inherent excitonic effects due fully nature discussed highlight strategies regulate charge‐ and/or energy‐transfer‐mediated photocatalysis. Finally, current challenges future directions field, aiming provide comprehensive understanding how be optimized enhanced photocatalysis discussed.

Язык: Английский

Процитировано

9
Ground-state charge transfer in single-molecule junctions covalent organic frameworks for boosting photocatalytic hydrogen evolution DOI Creative Commons

Rongchen Shen,

Can Huang,

Lei Hao

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 12, 2025

Ground-state charge transfer plays a vital role in improving the photocatalytic performance of D-A type covalent organic frameworks. However, limited studies have explored modulation COFs-based photocatalysts through ground-state transfer. Here we show formation extremely intense via unique bonding approach. We transform three-dimensional stacked COF-based S-scheme heterojunctions (FOOCOF-PDIU) into co-planar single-molecule junctions (FOOCOF-PDI). This junction structure exhibits strong compared to traditional randomly and individual COFs. induces redistribution dipole moment formation, which enhances built-in electric field intensity junctions. enhanced promotes exciton dissociation separation, resulting improved efficiency. Therefore, stable molecule-decorated COF with broad light absorption has been successfully obtained, whose hydrogen evolution rate can reach 265 mmol g−1 h−1. work opens an avenue for exploiting mechanisms COFs based on effects. Ground state is important donor-acceptor frameworks (COFs), but it underexplored. Here, authors report transfer, achieving

Язык: Английский

Процитировано

2