Covalent Organic Frameworks for Photocatalytic Reduction of Carbon Dioxide: A Review

ACS Nano, Год журнала: 2024, Номер 18(33), С. 21804 - 21835

Опубликована: Авг. 8, 2024

Covalent organic frameworks (COFs) are crystalline networks with extended backbones cross-linked by covalent bonds. Due to the semiconductive properties and variable metal coordinating sites, along rapid development in linkage chemistry, utilization of COFs photocatalytic CO2RR has attracted many scientists' interests. In this Review, we summarize latest research progress on for CO2 reduction. first part, present COF linkages that have been used CO2RR, discuss four mechanisms including as intrinsic photocatalysts, photosensitive motifs metalated semiconductors heterojunction photocatalysts. Then, principles structural designs functional building units stacking mode exchange. Finally, outlook challenges provided. This Review is intended give some guidance design synthesis diverse different linkages, various structures, divergent modes efficient photoreduction CO2.

Язык: Английский

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Boosting charge carrier separation by constructing a multivalent TiO2@Cu3(BTC)2 heterojunction photocatalyst toward enhanced photocatalytic hydrogen production

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162646 - 162646

Опубликована: Фев. 1, 2025

Язык: Английский

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Photosynthetic reaction pathways of natural and artificial systems

Science China Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 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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One-step synthesis of hollow Ce-doped ZnIn2S4/MOF(Ce) heterojunctions with hard-soft acid-base coordination for enhanced hydrogen evolution

Science China Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Язык: Английский

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Donor–Acceptor-π-Acceptor–Donor-Type Photosensitive Covalent Organic Framework for Effective Photocatalytic Aerobic Oxidation

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

Developing effective photocatalysts for the oxidation reaction is of great significance in chemical synthesis but still challenging. Herein, linking photochromic triphenylamine with pyrene units by situ formed robust imidazole moieties, a covalent organic framework (COF), PyNTB-COF, containing rare donor-acceptor-π-acceptor-donor (D-A-π-A-D) fragment, was successfully synthesized photocatalytic aerobic oxidation. Structure characterizations confirm its crystalline framework, high porosity, and good stability. Property studies reveal photoelectric semiconductor feature photoresponsive charge separation migration activity derived from D-A-π-A-D fragments, proven experimental results theoretical calculations. Photocatalytic experiments not only display highly triggering generation ·O2- under visible light irradiation also exhibit efficiency oxidations toluene amidation aldehydes. This work demonstrates that integration into materials to construct π-conjugated D-A moieties could enhance efficiency, achieving promising

Язык: Английский

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Co(Salen)-Based Hyper-Crosslinked Porous Ionic Polymer as Heterogeneous Synergistic Catalyst for the Cycloaddition of Co2 with Epoxides

Опубликована: Янв. 1, 2025

Язык: Английский

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Photocatalytic and photothermal catalytic CO2 reduction with H2O from regulatory mechanism to catalyst structure design: a review

Solar Energy, Год журнала: 2025, Номер 296, С. 113558 - 113558

Опубликована: Май 16, 2025

Язык: Английский

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Light Conversion by Electrochemiluminescence at Semiconductor Surfaces

Accounts of Chemical Research, Год журнала: 2024, Номер 57(15), С. 2144 - 2153

Опубликована: Июль 17, 2024

ConspectusElectrochemiluminescence (ECL) is the electrochemical generation of light. It involves an interfacial charge transfer that produces excited state a luminophore at electrode surface. ECL powerful readout method widely employed for immunoassays and clinical diagnostics progressively evolving into microscopy technique. On other hand, photoelectrochemistry illuminated semiconductors field research deals with photogenerated carriers solid-liquid interface. This concept offers several advantages such as considerable lowering onset potential required triggering reaction well light addressable chemistry, via spatial confinement redox reactions locally semiconductor electrodes. The combination termed photoinduced (PECL). through minority solid/liquid PECL results in conversion incident photons (λ

Язык: Английский

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