Accelerated Water Oxidation Kinetics Induced by Oxygen Vacancies in the BiVO₄/C₃N₄ S-Scheme Heterojunction for Enhanced Photocatalytic CO₂ Reduction

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

The solar-driven photocatalytic reduction of CO2 into fuels using a C3N4-based photocatalyst has shown great application potential in addressing challenges related to energy and emission. However, this process suffers from severe charge recombination sluggish H2O oxidation kinetics, resulting low efficiency. In study, 2D/2D S-scheme heterojunction by combining oxygen vacancy-rich BiVO4 nanoflakes with C3N4 nanosheets (denoted as Ov-BVO/CN) was fabricated mitigate the aforementioned issues, where serves water booster center. By leveraging synergistic effects lamellar morphology an charge-transfer pathway, Ov-BVO/CN achieves efficient separation while maintaining maximized redox capabilities. Moreover, theoretical calculations demonstrated that Ov on surface reverses rate-limiting step reducing its barrier, thereby accelerating reaction kinetics. optimized demonstrates remarkably improved evolution rates for CO (13.8 μmol g–1 h–1) CH4 (5.9 h–1), which are approximately 3.8 3.5 times higher than those CN under visible-light irradiation, respectively. This work highlights design fabrication highly heterostructure photocatalysts photoreduction.

Language: Английский

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Recent progress in intrinsic defect modulation of g-C ₃N ₄ based materials and their photocatalytic properties

Nano Research, Journal Year: 2025, Volume and Issue: 18(2), P. 94907125 - 94907125

Published: Jan. 7, 2025

Language: Английский

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SO2-tolerant photocatalytic CO2 reduction over titania by sulfur doping-induced charge redistribution and Fe sacrificial sites

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161016 - 161016

Published: Feb. 1, 2025

Language: Английский

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Recent Advances of Indium-Based Sulfides in Photocatalytic CO₂ Reduction

ACS Omega, Journal Year: 2025, Volume and Issue: 10(9), P. 8793 - 8815

Published: Feb. 26, 2025

Urgent and significant, the mitigation of greenhouse effects preservation Earth's ecological environment are paramount concerns. Photocatalytic carbon dioxide (CO2) reduction technology holds immense promise as it directly harnesses renewable solar energy to convert CO2 into hydrocarbon fuels valuable chemical products. Indium (In)-based sulfides have garnered significant attention in realm fundamental research on photocatalytic conversion. The performance exhibited by In-based materials is attributed appropriate bandgap (Eg), unique electronic states, tunable atomic structure, superior optoelectronic properties. Notably, metal also show excellent potential for addressing challenges related photocorrosion carrier recombination. This paper highlighted key structural features commonly employed synthesis techniques sulfides. Furthermore, summarized effective modification strategies aimed at optimizing these materials. A particular focus was placed exploring intricate structure–activity relationships, encompassing influence heterostructure construction, element doping, defect engineering, co-catalyst enhancing efficiency. Finally, article identified current outlined promising future directions photocatalysts, hoping provide references researchers.

Language: Английский

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Tunable nitrogen vacancies on g-C3N4 for efficient photocatalytic CO2 reduction and H2 production

Environmental Research, Journal Year: 2025, Volume and Issue: 274, P. 121302 - 121302

Published: March 5, 2025

Language: Английский

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Well-designed V2AlC MAX supported g-C3N4/TiO2 Z-scheme heterojunction for photocatalytic CO2 reduction through bi-reforming to produce CO and CH4

Energy, Journal Year: 2024, Volume and Issue: 310, P. 133231 - 133231

Published: Sept. 20, 2024

Language: Английский

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Green preparation of nitrogen vacancies enriched g-C3N4 for efficient photocatalytic reduction of CO2 and Cr(VI)

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 682, P. 446 - 459

Published: Dec. 1, 2024

Language: Английский

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Optimizing charge carrier dynamics in photocatalysts for enhanced CO2 photoreduction: Fundamental principles, advanced strategies, and characterization techniques

Next Energy, Journal Year: 2024, Volume and Issue: 7, P. 100222 - 100222

Published: Dec. 10, 2024

Language: Английский

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Fabrication of a direct Z-scheme heterojunction of UiO-66-NH₂ and tubular g-C₃N₄ for the stable photocatalytic reduction of CO₂ to CO and CH₄

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(20), P. 5938 - 5948

Published: Jan. 1, 2024

A direct Z-scheme heterojunction catalyst constructed by UiO-66-NH 2 and tubular g-C 3 N 4 exhibits excellent stability for photocatalytic reduction of CO .

Language: Английский

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Designing Semiconducting Polymer Dots for High-Efficiency CO₂ Photoreduction Using the Intramolecular Energy Transfer Strategy

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(17), P. 10875 - 10881

Published: Aug. 27, 2024

As an appealing class of optoelectronic nanomaterials, semiconducting polymer dots (Pdots) have been extensively used as bioprobes in fluorescence imaging and sensing recent years. However, the photocatalytic conversion CO2 using Pdots has seldom investigated so far. Herein, a series benzothiadiazole-containing triblock copolymers based on intramolecular energy transfer strategy was designed for visible light-driven reduction (>420 nm). Compared with model poly(9,9-dioctyl-fluorene-alt-5-fluoro-2,1,3-benzothiadiazole) (PFFBT), prepared exhibit sharply decreased radiative loss, extended light absorption range, more efficient charge carrier transport during process. Using facile coprecipitation method, resulting polymers were precursors to prepare well-dispersed water. PFFBT (51.16 μmol h–1 g–1), polymer-20% remarkably high CO yield 242.11 g–1, which is one highest values among reported nanopolymer photocatalysts under similar illumination conditions. This study provides important insights into engineering highly CO2.

Language: Английский

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