Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
Covalent organic frameworks (COFs) are a promising platform for heterogeneous photocatalysis due to their stability and design diversity, but potential is often restricted by unmanageable targeted excitation charge transfer. Herein, bimetallic COF integrating photosensitizers catalytic sites designed facilitate locally ultrafast transfer, aiming improve the photocatalytic reduction of CO
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: March 10, 2024
Abstract Covalent organic frameworks (COFs) attract significant attention due to their ordered, crystalline, porous, metal‐free, and predictable structures. These unique characteristics offer great opportunities for the diffusion transmission of photogenerated charges during photocatalysis. Currently, a considerable number COFs are used as metal‐free semiconductor photocatalysts. This review aims understand relationships between structure photocatalysis performance provides in‐depth insight into synthetic strategy improve performance. Subsequently, focuses on structural motif in sustainable photocatalytic hydrogen evolution, carbon dioxide reduction, peroxide generation, compound transformations. Last, conjunction with progress achieved challenges yet be overcome, candid discussion is undertaken regarding field COF photocatalysis, accompanied by presentation potential research avenues future directions. seeks provide readers comprehensive understanding pivotal role robust guidance innovative utilization
Language: Английский
Citations
67
Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(36), P. 19856 - 19865
Published: Aug. 31, 2023
Introducing an external visible-light field would be a promising strategy to improve the activity of electrocatalytic CO2 reduction reaction (CO2RR), but it still remains challenge due short excited-state lifetime active sites. Herein, Ru(bpy)3Cl2 struts as powerful photosensitive donors were immobilized into backbones Co-porphyrin-based covalent organic frameworks (named Co-Bpy-COF-Rux, x is molar ratio Ru and Co species, = 1/2 2/3) via coordination bonds, for photo-coupled CO2RR produce CO. The optimal Co-Bpy-COF-Ru1/2 displays high CO Faradaic efficiency 96.7% at -0.7 V vs reversible hydrogen electrode (RHE) partial current density 16.27 mA cm-2 -1.1 RHE under assistance light, both which far surpassing values observed in dark. significantly enhanced mainly attributed incorporation donor with long concomitantly giant built-in electric Co-Bpy-COF-Ru1/2, efficiently accelerate photo-induced electron transfer from cobalt-porphyrin light. Thus, sites have longer lower rate-determining steps' energy occurring during actual process. This first work porphyrin-based COFs CO2RR, opening new frontier construction efficient electrocatalysts.
Language: Английский
Citations
56
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(11)
Published: Jan. 16, 2024
Abstract The growth of disorganized lithium dendrites and weak solid electrolyte interphase greatly impede the practical application metal batteries. Herein, we designed synthesized a new kind stable polyimide covalent organic frameworks (COFs), which have high density well‐aligned lithiophilic quinoxaline phthalimide units anchored within uniform one‐dimensional channels. COFs can serve as an artificial on anode, effectively guiding deposition ions inhibiting dendrites. unsymmetrical Li||COF−Cu battery exhibits Coulombic efficiency 99 % at current 0.5 mA cm −2 , be well retained up to 400 cycles. Meanwhile, Li‐COF||LFP full cell shows over charge 0.3 C. And its capacity maintained 91 even after 150 Therefore, significant electrochemical cycling stability illustrates feasibility employing in solving disordered
Language: Английский
Citations
44
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(25)
Published: April 16, 2024
Covalent organic frameworks (COFs) have recently shown great potential for photocatalytic hydrogen production. Currently almost all reports are focused on two-dimensional (2D) COFs, while the 3D counterparts rarely explored due to their non-conjugated derived from sp
Language: Английский
Citations
26
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(26)
Published: April 15, 2024
Abstract The synthesis and characterization of porphyrin center regulated three‐dimensional covalent organic frameworks (COFs) with 2‐fold interpenetrated scu or sqc topology have been investigated. These COFs exhibit unique structural features properties, making them promising candidates for photocatalytic applications in CO 2 reduction artemisinin synthesis. serves as an anchor metal ions, allowing precise control over structures functions the frameworks. Furthermore, coordination within framework imparts desirable catalytic enabling their potential use reactions. Overall, these metal‐controlled offer exciting opportunities development advanced materials tailored functionalities.
Language: Английский
Citations
22
Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 352, P. 124020 - 124020
Published: April 21, 2024
Language: Английский
Citations
19
Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: March 9, 2025
It remains challenging to rationally design superior nanozymes and understand the underlying mechanism. Herein, a facile covalent coupling-modulated nitrogen defect is reported for significantly boosting peroxidase (POD)-like activity. Vanadium nitride (VN) nanoparticles are grown on graphene oxide (GO) via C–N bonding form VN/rGO nanocomposites by varying with VOx/GO ratio. The initial increasing GO amount enables formation of bond, dramatically POD-like Nevertheless, higher amount, defects decrease due forming mainly V2O3. defect-rich nanocomposite 20 wt % (VG-2) exhibits best catalytic efficiency (Vmax/Km = 0.0187 s–1), which 778-fold than that natural horseradish peroxidase. Theoretical calculations structure characterization reveal rich-N originate from VN binding onto rGO an rich-electron structure, impeding agglomeration, greatly reduces energy barrier rate-determining step reaction. Finally, coupling urate oxidase VG-2 as enzyme cascade, ultrasensitive selective colorimetric detection was developed uric acid (UA), one indicators kidney function or gout attacks, linear ranging 1–100 μM 0.1–2.5 mM limit 0.24 UA (S/N 3). proposed method applicable detecting in human serum samples satisfactorily. This work could inspire more effective insights into designing other robust through variety biochemical analysis biocatalysis applications.
Language: Английский
Citations
4
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 9, 2024
Abstract The global energy crisis and environmental concerns are driving research into renewable sustainable conversion storage technologies. Solar energy, as an ideal resource, has significant potential to contribute the goal of net‐zero carbon emissions if effectively harnessed converted a reliable storable form energy. Photocatalysts have convert sunlight chemical carriers. In this respect, covalent organic frameworks (COFs) shown great promise due their tunable structure on different length scales, high surface areas, beneficial optical properties such broad visible light absorption. This review offers comprehensive overview key developments in COF‐based photocatalysts for various applications, including water splitting, hydrogen peroxide generation, transformations, dioxide nitrogen reduction. underlying mechanisms, essential principles material design, structure‐function relationships COFs photocatalytic applications discussed. challenges faced by also summarized strategies enhance performance explained, improving crystallinity, regulating molecular structures, tailoring linkages, incorporating cocatalysts. Finally, critical proposed utilization photocatalytically generated chemicals value‐added products.
Language: Английский
Citations
18
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 516, P. 215997 - 215997
Published: June 5, 2024
Language: Английский
Citations
17
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(45)
Published: Aug. 13, 2024
Photocatalytic hydrogen production is one of the most valuable technologies in future energy system. Here, we designed a metal-covalent organic frameworks (MCOFs) with both small-sized metal clusters and nitrogen-rich ligands, named COF-Cu
Language: Английский
Citations
16