Covalent Organic Frameworks (COFs) for CO2 Utilizations

Carbon Capture Science & Technology, Год журнала: 2025, Номер unknown, С. 100365 - 100365

Опубликована: Янв. 1, 2025

Язык: Английский

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Donor-acceptor type porphyrin based covalent organic framework films as a photocathodic sensor for the polybrominated diphenyl ethers detection

Sensors and Actuators B Chemical, Год журнала: 2025, Номер unknown, С. 137237 - 137237

Опубликована: Янв. 1, 2025

Язык: Английский

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Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(49)

Опубликована: Авг. 27, 2024

Abstract As organic semiconductor materials gain increasing prominence in the realm of photocatalysis, two carbon‐nitrogen materials, poly (heptazine imide) (PHI) and (triazine (PTI), have garnered extensive attention applications owing to their unique structure properties. This review elaborates on distinctive physical chemical features PHI PTI, emphasizing formation mechanisms ensuing Furthermore, it elucidates intricate correlation between energy band structures various photocatalytic reactions. Additionally, outlines primary synthetic strategies for constructing along with characterization techniques identification. It also summarizes enhancing performance whose advantages are discussed. Finally, highlights promising prospects challenges PTI as photocatalysts.

Язык: Английский

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S-scheme heterojunction of WO3/metal-covalent organic frameworks for artificial photosynthetic CO2 reduction

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161820 - 161820

Опубликована: Март 1, 2025

Язык: Английский

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Creating Direct Interlayer Charge Transport Channels in Vinyl-linked 2D Covalent Organic Framework for Efficient Photocatalytic CO2 Reduction

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125299 - 125299

Опубликована: Март 1, 2025

Язык: Английский

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Intrareticular Exciton Effects Regulate Photocatalytic Activity in Donor–Acceptor Olefin‐Linked Covalent Organic Frameworks

Small, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 3, 2024

Abstract Olefin‐linked covalent organic frameworks (OL‐COFs) show great promise for visible‐light‐driven photocatalysis. Manipulating atomic‐level donor–acceptor interactions in OL‐COFs is key to understanding their exciton effects this system. Here, three are presented with orthorhombic lattice structures, synthesized via Knoevenagel polycondensation reaction of terephthalaldehyde and tetratopic monomers featuring phenyl, benzo[c][1,2,5]oxadiazole, benzo[c][1,2,5]thiadiazole moieties. These feature tunable interactions, making them ideal studying olefin‐linked systems. Comprehensive analyses, including temperature‐dependent photoluminescence spectra, ultrafast spectroscopy, theoretical calculations, reveal that stronger lead reduced binding energy ( E b ), accelerated dissociation, longer‐lived photogenerated charges, thereby enhancing photocatalytic performance. Notably, The TMO‐BDA COF, the lowest , demonstrates superior activity one‐pot sequential transformation excellent catalytic performance gram‐scale reactions, highlighting its potential practical applications. This work provides valuable insights into regulating effect at molecular level OL‐COFs, offering pathways enhance efficiency.

Язык: Английский

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Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Angewandte Chemie, Год журнала: 2024, Номер 136(49)

Опубликована: Авг. 27, 2024

Abstract As organic semiconductor materials gain increasing prominence in the realm of photocatalysis, two carbon‐nitrogen materials, poly (heptazine imide) (PHI) and (triazine (PTI), have garnered extensive attention applications owing to their unique structure properties. This review elaborates on distinctive physical chemical features PHI PTI, emphasizing formation mechanisms ensuing Furthermore, it elucidates intricate correlation between energy band structures various photocatalytic reactions. Additionally, outlines primary synthetic strategies for constructing along with characterization techniques identification. It also summarizes enhancing performance whose advantages are discussed. Finally, highlights promising prospects challenges PTI as photocatalysts.

Язык: Английский

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Molecular engineering of covalent organic frameworks for boosting carbon dioxide photoreduction via modulating carrier dissociation and transfer

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160346 - 160346

Опубликована: Фев. 1, 2025

Язык: Английский

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Rational Design of Methylated Triazine‐Based Linear Conjugated Polymers for Efficient CO₂ Photoreduction with Water

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Abstract The development of semiconducting conjugated polymers for photoredox catalysis holds great promise sustainable utilization solar energy. Herein a new family porous methylated triazine‐based linear is reported that enable efficient photoreduction carbon dioxide (CO 2 ) with water (H O) vapor, in the absence any additional photosensitizer, sacrificial agents or cocatalysts. It demonstrated key lies generation triazine linkages through facile condensation reaction between benzamidine and acetic anhydride, which impedes formation conventional frameworks. also shown regulating backbones different lengths electron‐donated benzyl units provides means to modulate their optical properties exciton dissociation, thereby affording more long‐lived photogenerated charge carriers boosting separation transfer. A high‐performance monoxide (CO) production rate 218.9 µmol g −1 h achieved ≈ 100% CO selectivity, accompanied by exceptional H O oxidation oxygen (O ). anticipates this study will advance synthetic approaches toward polymeric semiconductors facilitate possibilities promising potential artificial photocatalysis.

Язык: Английский

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Sulfur Conversion to Donor‐Acceptor Ladder Polymer Networks through Mechanochemical Nucleophilic Aromatic Substitution for Efficient CO₂ Photoreduction

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

Опубликована: Фев. 10, 2025

Abstract The development of synthetic methods capable converting elemental sulfur into conjugated porous sulfur‐rich polymers remains a great challenge, although direct utilization this readily available feedstock can significantly enrich its uses and circumvent environmental problems during storage. We report herein mechanochemical (MC) nucleophilic aromatic substitution (S N Ar) that enables conversion thianthrene‐bridged ladder polymer networks with dense donor‐acceptor (D−A) molecular junctions. demonstrate the key lies in generation bent thianthrene units through solid‐state ball‐milling condensation reaction between 1,2‐dihaloarenes sulfur. also show assembling D−A structural motifs affords efficient visible‐light‐driven photocatalytic reduction carbon dioxide (CO 2 ) water (H O) vapor, absence any additional photosensitizer, sacrificial agents or cocatalysts. Exceptional photoinduced charge separation along boosted exciton dissociation results high‐performance monoxide (CO) production rate 306.1 μmol g −1 h near 100 % CO selectivity, which is accompanied by H O oxidation to , as confirmed both experimental theoretical results. anticipate novel MC S Ar approach will advance processing techniques for facilitate new possibilities synthesis promising potential photocatalysis.

Язык: Английский

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