MOF‐on‐MOF‐Derived Hollow Co₃O₄/In₂O₃ Nanostructure for Efficient Photocatalytic CO₂ Reduction

Advanced Science, Journal Year: 2023, Volume and Issue: 10(19)

Published: April 21, 2023

Abstract The photocatalytic transformation of carbon dioxide (CO 2 ) into carbon‐based fuels or chemicals using sustainable solar energy is considered an ideal strategy for simultaneously alleviating the shortage and environmental crises. However, owing to low utilization sunlight inferior catalytic activity, conversion efficiency CO photoreduction far from satisfactory. In this study, a MOF‐derived hollow bimetallic oxide nanomaterial prepared efficient . First, unique ZIF‐67‐on‐InOF‐1 heterostructure successfully obtained by growing secondary Co‐based ZIF‐67 onto initial InOF‐1 nanorods. corresponding counterpart has larger specific surface area after acid etching, oxidized H‐Co 3 O 4 /In material exhibits abundant heterogeneous interfaces that expose more active sites. band structure corresponds well with photosensitizer [Ru(bpy) ]Cl , which results in high yield 4828 ± 570 µmol h −1 g stable activity over consecutive six runs, demonstrating adequate performance. This study demonstrates rational design MOF‐on‐MOF heterostructures can completely exploit synergistic effects between different components, may be extended other nanomaterials as promising catalysts practical storage.

Language: Английский

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Recent advances in metal/covalent organic frameworks based materials: Their synthesis, structure design and potential applications for hydrogen production

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 483, P. 215066 - 215066

Published: March 9, 2023

Language: Английский

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COF-C4N Nanosheets with uniformly anchored single metal sites for electrocatalytic OER: From theoretical screening to target synthesis

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 325, P. 122366 - 122366

Published: Jan. 5, 2023

Language: Английский

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Dithiine-linked metalphthalocyanine framework with undulated layers for highly efficient and stable H2O2 electroproduction

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 23, 2024

Realization of stable and industrial-level H

Language: Английский

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Optimization Strategies of Covalent Organic Frameworks and Their Derivatives for Electrocatalytic Applications

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(11)

Published: Nov. 27, 2023

Abstract Covalent organic frameworks (COFs) are crystalline porous polymers that can be precisely integrated by building blocks to achieve pre‐designed composition, components, and functions, making them a powerful platform for the development of molecular devices in field electrocatalysis. The precise control channel/dopant positions highly ordered network structures COFs provide an ideal material system applications advanced In this paper, topological structure design synthesis methods reviewed detail, their principles deeply analyzed. addition, derivatives electrocatalysis systematically summarized optimization strategies proposed. Finally, application prospects challenges may encountered future prospected, providing helpful guidance research.

Language: Английский

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Breaking the N-limitation with N-enriched porous submicron carbon spheres anchored Fe single-atom catalyst for superior oxygen reduction reaction and Zn-air batteries

Energy storage materials, Journal Year: 2023, Volume and Issue: 59, P. 102790 - 102790

Published: April 23, 2023

Language: Английский

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Photocoupled Electroreduction of CO₂ over Photosensitizer-Decorated Covalent Organic Frameworks

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

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Conductive Covalent Organic Frameworks of Polymetallophthalocyanines as a Tunable Platform for Electrocatalysis

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(44), P. 24230 - 24239

Published: Oct. 27, 2023

Developing an electrocatalyst platform that can control the interplay among activity, selectivity, and stability at atomic precision remains a grand challenge. Here, we have synthesized highly crystalline polymetallophthalocyanines (pMPcs, M = Fe, Co, Ni, Cu) through annulation of tetracyanobenzene in presence transition metals. The conjugated, conductive, stable backbones with precisely installed metal sites render pMPcs unique electrochemical catalysis, where tunability emerges from long-range interactions. construction pCoNiPc Co Ni dual-site integrates advantageous features pCoPc pNiPc electrocatalytic CO2 reduction electronic communication unprecedented long separation ≥14 chemical bonds. This integration provides excellent activity (current density, j -16.0 -100 mA cm-2 H-type flow cell, respectively), selectivity (CO Faraday efficiency, FECO 94%), (>10 h), making it one best-performing reticular materials.

Language: Английский

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Downsizing Porphyrin Covalent Organic Framework Particles Using Protected Precursors for Electrocatalytic CO₂ Reduction

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(19)

Published: Feb. 1, 2024

Abstract Covalent organic frameworks (COFs) are promising electrocatalyst platforms owing to their designability, porosity, and stability. Recently, COFs with various chemical structures developed as efficient electrochemical CO 2 reduction catalysts. However, controlling the morphology of COF catalysts remains a challenge, which can limit electrocatalytic performance. Especially, while porphyrin show catalytic properties, particle size is mostly large uncontrolled because severe aggregation crystallites. In this work, new synthetic methodology for rationally downsized catalyst particles reported, where tritylated amine employed novel protected precursor synthesis. Trityl protection provides high solubility precursor, its deprotection proceeds in situ under typical synthesis conditions. Subsequent homogeneous nucleation colloidal growth yield smaller than conventional synthesis, suppressed crystallite aggregation. The exhibit superior performance reduction, higher production rate faradaic efficiency compared particles. improved attributed contact area conductive agent. This study reveals an important factor evaluation electrocatalysts strategy control it.

Language: Английский

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Recent progress on covalent organic frameworks and their composites as electrode materials for supercapacitors

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 8(1)

Published: Dec. 26, 2024

Language: Английский

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