Metal to non-metal sites of metallic sulfides switching products from CO to CH4 for photocatalytic CO2 reduction

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Окт. 4, 2023

The active center for the adsorption and activation of carbon dioxide plays a vital role in conversion product selectivity photocatalytic CO2 reduction. Here, we find multiple metal sulfides CuInSnS4 octahedral nanocrystal with exposed (1 1 1) plane selectively reduction to methane. Still, is switched monoxide on corresponding individual In2S3, SnS2, Cu2S. Unlike common or defects as sites, non-metal sulfur atom revealed be responding CH4 products. adsorbed electron-poor favorable stabilizing intermediates thus promotes CH4. Both activity products over pristine can further improved by modification various co-catalysts enhance separation photogenerated charge carrier. This work provides site determine

Язык: Английский

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Anthraquinone centers modified covalent organic frameworks for boosted photocatalytic O2-to-H2O2 synthesis: Inhibiting the in-situ decomposition of H2O2

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148494 - 148494

Опубликована: Янв. 4, 2024

Язык: Английский

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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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A review on the advancements in covalent organic frameworks for photocatalytic reduction of carbon dioxide

Coordination Chemistry Reviews, Год журнала: 2024, Номер 521, С. 216167 - 216167

Опубликована: Авг. 29, 2024

Язык: Английский

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Pyridine-nitrogen conjugated covalent organic frameworks for high-efficiency gas-solid photocatalytic reduction of CO2 to CO

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Impact of the Crystallinity of Covalent Organic Frameworks on Photocatalytic Hydrogen Evolution

Crystal Growth & Design, Год журнала: 2023, Номер 23(6), С. 4701 - 4719

Опубликована: Май 22, 2023

The design and synthesis of crystalline porous materials is a frontier research area, especially in photo(electro)catalysis, due to their fascinating semiconducting properties. In recent years, metal–organic frameworks (MOFs) covalent organic (COFs) have received much attention heterogeneous catalysis, ranging from chemical conversion solar energy production. addition, COFs with well-ordered framework structures been extensively studied the field photocatalysis for water splitting produce hydrogen (H2) oxygen (O2). Due synergistic effect crystallinity, porosity, conjugation frameworks, widely explored. this Review, we aim discuss crystallinity on generation via photocatalytic splitting. We then briefly summarize basic mechanisms generation, advantages semiconductors over amorphous materials, strategic designs COFs. state-of-the-art developments as evolution systematically reviewed. believe that understanding structure–property relationship performance respect long-range structural order essential further development innovative COF-based real-time applications.

Язык: Английский

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A DFT study on Pt single atom loaded COF for efficient photocatalytic CO2 reduction

Journal of Material Science and Technology, Год журнала: 2023, Номер 170, С. 87 - 94

Опубликована: Июль 22, 2023

Язык: Английский

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Metal-free 3D donor–acceptor COF with low exciton binding for solar fuel production based on CO₂reduction

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(25), С. 13615 - 13622

Опубликована: Янв. 1, 2023

A donor–acceptor based 3D TT-COF is employed as a metal-free photocatalyst for CO 2 reduction. selectively produces from using visible light, without external photosensitizers or cocatalysts by minimizing exciton binding energy.

Язык: Английский

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Multifunctional Dysprosium(III)–Organic Framework for Efficiently Catalyzing the Cycloaddition of CO₂ and Knoevenagel Condensation under Mild Conditions

ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 11(50), С. 17837 - 17848

Опубликована: Дек. 6, 2023

Two-dimensional (2D) materials with higher order in-plane nanoscale pores play a crucial role in innumerable applications, but their precise and reasonable preparation remains huge challenge. Herein, we report the highly robust 2D dysprosium(III)–organic framework {[Dy(H2BDTP)(DMF)2]·2DMF·3H2O}n (NUC-101) (15.2 × 6.4 Å2) (H5BDTP = 2,6-bis(2,4-dicarboxyphenyl)-4-(2H-tetrazol-5-yl)pyridine). After activation, scarcely reported host [Dy2(H2BDTP)2]n is of great interest due to that it not only contains voids 15.2 11.7 Å3 also functionalized by free carboxyl, pyridinyl, tetrazolyl groups upper lower parts. Thanks excellent physicochemical properties including omnidirectional opening pores, ultrahigh porosity, larger specific surface area, plentiful coexisting Lewis acid–base sites open dinuclear Dy3+ ions, groups, cycloaddition CO2 epoxides Knoevenagel condensation malonitrile aldehydes can be efficiently catalyzed NUC-101a under comparatively mild conditions high selectivity turnover frequency. This work provides valuable insight development nanoporous more feasible for achieving goal catalytic applications.

Язык: Английский

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COF‐Topological Quantum Material Nano‐heterostructure for CO₂ to Syngas Production under Visible Light

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(16)

Опубликована: Фев. 24, 2024

Abstract Efficient solar‐driven syngas production (CO+H 2 mixture) from CO and H O with a suitable photocatalyst fundamental understanding of the reaction mechanism are desired approach towards carbon recycling process. Herein, we report design development an unique COF‐topological quantum material nano‐heterostructure, COF@TI newly synthesized donor‐acceptor based COF two dimensional (2D) nanosheets strong topological insulator ( TI ), PbBi Te 4 . The intrinsic robust metallic surfaces act as electron reservoir, minimising fast electron‐hole recombination process, presence 6s lone pairs in Pb 2+ Bi 3+ helps for efficient binding, which responsible boosting overall catalytic activity. In variable ratio acetonitrile‐water (MeCN : O) solvent mixture produces different ratios nano‐heterostructure enables to produce higher amount more controllable compared pristine transfer route was realized Kelvin probe force microscopy (KPFM) analysis, charge density difference calculation, excited state lifetime photoelectrochemical measurements. Finally, probable mechanistic pathway has been established after identifying sites intermediates by situ DRIFTS study DFT calculation.

Язык: Английский

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