Porphyrin‐Based Covalent Organic Frameworks for CO₂ Photo/Electro‐Reduction

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Photo/electro-catalytic CO2 reduction into high-value products are promising strategies for addressing both environmental problems and energy crisis. Duo to their advantageous visible light absorption ability, adjustable optic/electronic properties, definite active center, post-modification capability, excellent stability, porphyrin-based covalent organic frameworks (COFs) have emerged as attractive photo/electro-catalysts towards reduction. In this review, the research progress of COFs photo/electro-catalytic is summarized including design principles, catalytic performance, reaction mechanism. addition, review also presents some challenges prospects application in reduction, laying base fundamental efforts.

Язык: Английский

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Metallosalen Covalent Organic Frameworks with Integrated Organic–Inorganic Active Sites for Enhanced Li Storage

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Abstract Covalent organic frameworks (COFs) hold great promise as cathode materials for lithium‐ion batteries (LIBs), but their limited conductivity has hindered broader application. In this study, a novel metallosalen COF (Cu‐TH‐COF) is introduced, synthesized via one‐pot method, incorporating redox‐active Cu ions into N 2 O pockets and creating an extended π‐d conjugated structure. This design merges inorganic active sites, enabling efficient multi‐electron transfer improving the utilization of sites in LIBs. The conjugation significantly enhances electronic conductivity, resulting improved rate performance. As result, Cu‐TH‐COF delivers impressive discharge capacity 300 mAh g −1 at 50 mA retains 174 4000 , outperforming its Cu‐free counterpart. study demonstrates first time potential COFs high‐performance opens up new strategy next‐generation

Язык: Английский

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Porphyrin‐Based Covalent Organic Frameworks for CO₂ Photo/Electro‐Reduction

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Abstract Photo/electro‐catalytic CO 2 reduction into high‐value products are promising strategies for addressing both environmental problems and energy crisis. Duo to their advantageous visible light absorption ability, adjustable optic/electronic properties, definite active center, post‐modification capability, excellent stability, porphyrin‐based covalent organic frameworks (COFs) have emerged as attractive photo/electro‐catalysts towards reduction. In this review, the research progress of COFs photo/electro‐catalytic is summarized including design principles, catalytic performance, reaction mechanism. addition, review also presents some challenges prospects application in reduction, laying base fundamental efforts.

Язык: Английский

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MoSe₂/Bi₂Se₃ Heterostructure Immobilized in N‐Doped Carbon Nanosheets Assembled Flower‐Like Microspheres for High‐Rate Sodium Storage

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Abstract A key challenge for sodium‐ion batteries (SIBs) lies in identifying suitable host materials capable of accommodating large Na + ions while addressing sluggish chemical kinetics. The unique interfacial effects heterogeneous structures have emerged as a critical factor accelerating charge transfer and enhancing reaction Herein, MoSe 2 /Bi Se 3 composites integrated with N‐doped carbon nanosheets are synthesized, which spontaneously self‐assemble into flower‐like microspheres (MoSe @N‐C). Electrochemical measurements density functional theory (DFT) calculations underscore the significant improvement kinetics enabled by structural advantages composite. Remarkably, nanosheet morphology provides more storage sites, uniformly distributed heterostructure can optimize carrier concentration alter electric field distribution, thereby facilitating enabling additional sodium ion storage. When employed an anode material SIBs, @N‐C exhibits exceptional performance, delivering reversible capacity 521.4 mAh g −1 at 1 800 cycles 407.9 10 over 1400 cycles. Notably, be fully restored to its initial level after cycling high current densities. This study, combining experimental theoretical insights, novel perspective on interface engineering advance practical application SIBs.

Язык: Английский

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Porphyrin-based covalent organic frameworks with undulated layers for efficient photocatalytic CO2 reduction

Science Bulletin, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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Covalent Organic Framework (COF)—Topical Game Changer for Polymeric Nanocomposites

Polymer-Plastics Technology and Materials, Год журнала: 2025, Номер unknown, С. 1 - 32

Опубликована: Апрель 10, 2025

Язык: Английский

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Piperazine-Linked Phthalocyanine Covalent Organic Frameworks for Efficient Anodic Lithium Storage

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 12, 2025

Organic anode materials have been considered as promising electrodes for achieving low-cost and sustainable lithium-ion batteries (LIBs). However, organic face challenges, such inadequate cycling stability sluggish reaction kinetics, leading to an unsatisfactory LIB performance. Covalent frameworks (COFs) possess a porous designable structure coupled with exceptional stability, making them candidates in LIBs address the challenges. Herein, two piperazine-linked conjugated phthalocyanine-based COFs (named CoPc-BTM-COF CoPc-DAB-COF) were fabricated from reacting hexafluorophthalocyanine cobalt(II) (CoPcF16) 1,2,4,5-benzenetetramine (BTM) 3,3'-diaminobenzidine (DAB), respectively. Powder X-ray diffraction electron microscopy analyses combination theoretical simulation reveal their crystalline nature sql net AA arranged stacking pattern. The pore sizes of these Pc-COFs are 1.62 1.90 nm according N2 sorption measurement, which facilitates rapid transport Li+ ions. immersion experiments disclose remarkable stability. These advantages, together nitrogen-rich skeletal structures, lead outstanding anodic storage capabilities, rate performance, favorable In particular, both exhibit high capacities 877 669 mAh g-1 at 100 mA g-1, superior most reported anodes, showing application potential high-performance LIBs.

Язык: Английский

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Thiophene‐Based Bipolar‐Type Covalent Organic Frameworks with Extended π‐Conjugation as Superior Cathode for Lithium‐Ion Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Abstract Covalent organic frameworks (COFs) have latterly emerged as a promising platform for devising electrode materials used to acquire high‐performance lithium‐ion batteries (LIBs). However, the preparation of COFs with fast redox kinetics, high‐efficiency utilization active sites, superior stability, and high conductivity remains challenge. Herein, thiophene‐based bipolar‐type (denoted TT‐TPDA‐COF) featuring extended conjugation, rich multiple redox‐active sites (C─S, C─N, C═N), hierarchical micro‐mesoporosity is synthesized. TT‐TPDA‐COF exhibits significantly increased density enhanced electrical compared its corresponding counterpart (Np‐TPDA‐COF). Remarkably, when LIBs cathode, it shows exceptional specific capacity up 309 mA h g −1 at 200 , surpassing that Np‐TPDA‐COF (195 ), energy 714 W kg superb rate property (182 5000 impressive preservation 84.3% after cycles . Additionally, predictable application prototype has been proved by dual‐ion full cells assembled using cathode. Furthermore, storage mechanism comprehensively revealed in/‐ex situ studies theoretical calculations.

Язык: Английский

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Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

Journal of Power Sources, Год журнала: 2024, Номер 626, С. 235794 - 235794

Опубликована: Ноя. 11, 2024

Язык: Английский

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Encapsulating perovskite quantum dots into 3D COF for visible light-driven CO2 reduction

Science China Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Язык: Английский

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