Beyond Tradition: A MOF‐On‐MOF Cascade Z‐Scheme Heterostructure for Augmented CO₂ Photoreduction

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Metal-organic frameworks (MOFs) are rigorously investigated as promising candidates for CO2 capture and conversion. MOF-on-MOF heterostructures integrate bolstered charger carrier separation with the intrinsic advantages of MOF components, exhibiting immense potential to substantially escalate efficiency photocatalytic reduction (CO2RR). However, structural compositional complexity poses significant challenges controllable development these heterostructures. Herein, a conventional nanocomposite is readily optimized from type II heterojunction state-of-the-art cascade Z-scheme configuration via encapsulation Pt nanoparticles (Pt NPs), establishing synergistic MOF-MOF metal-MOF heterojunctions reinforced built-in electric field. A electron flow thus propelled, vigorously separating photogenerated charge carriers profoundly extending their lifetimes. Collectively, activity drastically promoted, nearly quintuple enhancement in CO production rate over original heterostructure. Moreover, anti-sintering capacity developed unveiled, elucidating its simultaneously improved stability. These findings present unprecedented regulation heterojunction, enriching fundamental understanding rational design strategies composite materials.

Language: Английский

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Efficient hydrogen production via NaBH4 methanolysis enhanced by bismuth terephthalic acid metal–organic framework

Ionics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

Language: Английский

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Sulfur Defect Tuning of CuS/BiVO₄ and Understanding the Function of Hydrogen Radicals for Photoelectrochemical Ammonia Production

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

Published: Feb. 21, 2025

Photoelectrochemical nitrate reduction has been a promising method for ammonia (NH3) production under normal temperatures and neutral conditions. However, hydrogenation is key process in the selective of NH3 during reduction; therefore, inducing active hydrogen inhibiting are noteworthy problem. In this study, BiVO4/CuS (BVO/CS) heterostructure constructed photoelectrochemical reaction (PEC NIRR). The introduction CuS optimizes electron-transfer ability enhances surface catalytic kinetics BVO/CS. At same time, presence sulfur vacancies on promotes adsorption activation nitrate, realizes splitting H2O, successfully generates abundant radicals (H*). generated H* effectively utilized NIRR. yield selectivity optimal BVO/CS reach 30.55 μg h-1 cm-2 43.8%, respectively, which 2.65 2.39 times that bare BVO. Therefore, work determines role hydrogenation, providing novel strategy boosting PEC CuS/BiVO4 was fabricated reduction. Sulfur defects enabled generation radicals, promoted production.

Language: Английский

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Cascade Design and Facile Fabrication of Cu/Cu₂O/CuAl‐Layered Double Hydroxides as Efficient Nitrate Reduction Electrocatalysts

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 15, 2024

Nitrate (NO

Language: Английский

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