Hydroxyl-Bonded Ru on Metallic TiN Surface Catalyzing CO₂ Reduction with H₂O by Infrared Light

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(50), С. 27415 - 27423

Опубликована: Дек. 11, 2023

Synchronized conversion of CO2 and H2O into hydrocarbons oxygen via infrared-ignited photocatalysis remains a challenge. Herein, the hydroxyl-coordinated single-site Ru is anchored precisely on metallic TiN surface by NaBH4/NaOH reforming method to construct an infrared-responsive HO-Ru/TiN photocatalyst. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (ac-HAADF-STEM) X-ray absorption spectroscopy (XAS) confirm atomic distribution species. XAS density functional theory (DFT) calculations unveil formation HO-RuN5-Ti Lewis pair sites, which achieves efficient polarization/activation dual coordination with C O atoms HO-Ru/TiN. Also, implanting species powerfully boosts separation transfer photoinduced charges. Under infrared irradiation, catalyst shows superior CO2-to-CO transformation activity coupled oxidation release O2, reduction rate can further be promoted about 3-fold under simulated sunlight. With key reaction intermediates determined in situ diffuse reflectance Fourier transform (DRIFTS) predicted DFT simulations, possible photoredox mechanism system proposed.

Язык: Английский

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S-scheme heterojunction of crystalline carbon nitride nanosheets and ultrafine WO3 nanoparticles for photocatalytic CO2 reduction

Journal of Environmental Sciences, Год журнала: 2023, Номер 140, С. 103 - 112

Опубликована: Май 30, 2023

Язык: Английский

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Carbon quantum dots-modified tetra (4-carboxyphenyl) porphyrin/BiOBr S-scheme heterojunction for efficient photocatalytic antibiotic degradation

Science China Materials, Год журнала: 2024, Номер 67(2), С. 562 - 572

Опубликована: Янв. 23, 2024

Язык: Английский

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Metal Sulfide S‐Scheme Homojunction for Photocatalytic Selective Phenylcarbinol Oxidation

Advanced Science, Год журнала: 2024, Номер 11(17)

Опубликована: Фев. 28, 2024

Abstract Metal sulfide‐based homojunction photocatalysts are extensively explored with improved photocatalytic performance. However, the construction of metal S‐scheme remains a challenge. Herein, fabrication 2D CdIn 2 S 4 nanosheets coated 3D octahedra (referred to as 2D/3D n‐CIS/o‐CIS) photocatalyst is reported by simply adjustment polyvinyl pyrrolidone amount during solvothermal synthesis. The formation within n‐CIS/o‐CIS systematically investigated via series characterizations, which can generate an internal electric field facilitate separation and migration photogenerated electron‐hole pairs. composite exhibits significantly activity stability in selective oxidation phenylcarbinol (PhCH OH) benzaldehyde (PhCHO) when compared pure n‐CIS o‐CIS samples under visible light irradiation. It hoped that this work contribute novel insights into development sulfides for solar energy conversion.

Язык: Английский

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Twin S-Scheme g-C₃N₄/CuFe₂O₄/ZnIn₂S₄ Heterojunction with a Self-Supporting Three-Phase System for Photocatalytic CO₂ Reduction: Mechanism Insight and DFT Calculations

ACS Catalysis, Год журнала: 2024, Номер 14(7), С. 5326 - 5343

Опубликована: Март 26, 2024

The use of photocatalytic solar energy to drive CO2 reduction is beneficial for addressing fossil fuel shortages and environmental pollution issues. We synthesized a twin S-scheme g-C3N4/CuFe2O4/ZnIn2S4 heterojunction, which was used construct self-supporting three-phase system reduction. Two built-in electric fields in this heterojunction induced effective migration photogenerated carriers, resulting wide light response range strong oxidation ability. This without sacrificial agent had high CH4 selectivity (96.8%) surprise production rate (267.4 μmol g–1 h–1), still maintained an excellent cycle (249–267.4 h–1) during five cycles. In addition, possessed both hydrophilicity hydrophobicity, achieved efficient transformation into by controlling interface wettability. g-C3N4 as hydrophobic layer promoted mass transfer achieve the enrichment on surface; ZnIn2S4 hydrophilic could well adsorb H2O, further oxidized holes many protons (H+). Finally, DFT calculations found that Fe–N bonds located between CuFe2O4 played crucial role They served bridge electron induce bending adsorption CO2, enhanced *CO stabilization *H.

Язык: Английский

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Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction

Chinese Journal of Structural Chemistry, Год журнала: 2024, Номер 43(3), С. 100245 - 100245

Опубликована: Фев. 5, 2024

Язык: Английский

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Rational design of Ag/CuO@ZnIn2S4 S-scheme plasmonic photocatalyst for highly selective CO2 conversion

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 342, С. 123449 - 123449

Опубликована: Окт. 30, 2023

Язык: Английский

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TiO2-based S-scheme photocatalysts for solar energy conversion and environmental remediation

Science China Materials, Год журнала: 2024, Номер 67(2), С. 424 - 443

Опубликована: Янв. 23, 2024

Язык: Английский

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Atomic-level surface modification of ultrathin Bi2WO6 nanosheets for boosting photocatalytic CO2 reduction

Chemical Engineering Journal, Год журнала: 2023, Номер 480, С. 148033 - 148033

Опубликована: Дек. 14, 2023

Язык: Английский

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2D semiconductor nanosheets for solar photocatalysis

EcoEnergy, Год журнала: 2023, Номер 1(2), С. 248 - 295

Опубликована: Дек. 1, 2023

Abstract In the advancing world of graphene, highly anisotropic 2D semiconductor nanosheets, notable for their nanometer‐scale thickness, have emerged as a leading innovation, displaying immense potential in exploration renewable and clean energy production. These garnered significant attention from researchers. The nanosheets are marked by extraordinary electronic, optical, chemical attributes, positioning them attractive foundational components heterogeneous photocatalysts. This review diligently summarizes both seminal work ongoing developments pertaining to application solar within context photocatalysis. We begin detailing distinctive properties concentrating on pivotal roles augmenting photocatalytic efficiency, explaining intrinsic mechanisms that govern migration rate photogenerated carriers material's surface. Subsequently, we delineate methods employed synthesize typical nanosheets. alignment with overarching objective expanding light absorption capacity accelerating charge transfer, also examine current research hybridization techniques involving materials varied dimensions, well deployment diverse applications. conclude identifying promising avenues challenges await further this burgeoning field.

Язык: Английский

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