Graphdiyne-based catalysts for efficient hydrogen energy conversion

Опубликована: Янв. 1, 2025

Язык: Английский

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Alloyed Rhodium‐Copper Nanocavities with Optimized Chemisorption of Hydrogen Radicals for Efficient Nitrate‐to‐Ammonia Electrocatalysis

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

Electrocatalytic reduction of waste nitrate (NO3 -) in water represents a sustainable and economic route for selective electrosynthesis recycled ammonia (NH3), but their performance still falls behind the needed. Herein, bimetallic rhodium-copper nanocavities (RhCu NCs), featuring open mesoscopic structure well-alloyed composition at atomic level, are demonstrated as high-performance electrocatalyst efficient nitrate-to-ammonia --to-NH3) electrocatalysis neutral condition. In comparison to other counterpart electrocatalysts, best RhCu NCs deliver superior NO3 --to-NH3 very positive potential -0.10 V versus RHE with Faradaic efficiency 97.5%, yield rate 8.1 mg h-1 mg-1, energy 39%, cycling stability reaching 15 cycles. The combination kinetic analysis, situ Raman spectroscopy, density functional theory calculation reveals that active hydrogen radicals can be kinetically formed selectively consumed by nitrogen intermediates promote [2e + 6e] tandem pathway - NH3 electrosynthesis. work thus provides some insights into designing electrocatalysts multi-electron products from various electrocatalytic reactions.

Язык: Английский

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Expediting Industrial Electrochemical Nitrate‐to‐Ammonia via a Heterogeneous Trap Architecture‐Driven Microconvection Catalyst With Enhanced NH₃/Heat Gradient

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 15, 2025

Abstract In this work, we report a heterogeneous trap architecture‐driven microconvection catalyst with enhanced NH 3 /heat gradient enabled by designing built‐in double heterostructure of Ni‐Bi‐S catalytic layer intrinsic ammonia/heat combining 3D inverted biomimetic mushroom (IBM) lattice structure effect‐driven gradient. The crystal Bi 2 S /amorphous Ni compared can effectively low the binding energy between electron and orbit, enhance transfer ability, generate more charge accumulation at junctions within heterostructures, slow *H release hydrolysis couple process, accelerate consumption nitrate reduction reduce ‐formation free barrier produce molecular ammonia, thereby forming ammonia heat inside layer. Besides, is conducive to formation higher irradiation gradient, on surface, stronger thermal/NH convection. Notably, as‐prepared electrocatalyst achieve high yield 4.87 mmol −1 h cm −2 in ultra‐low polarization potential ‐0.17V (vs Reversible Hydrogen Electrode (RHE)) industrial 800 mA/cm current density under electric‐light field condition, highest improvement rate reach 44.5%, saving up 27.8% pure electric conditions.

Язык: Английский

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Challenges and Breakthroughs in Single-Atom Catalysts for Electrocatalytic Nitrate Reduction to Ammonia

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Язык: Английский

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p-d Orbital Hybridization in Amorphous CuTe Porous Nanonets for Boosting Electrocatalytic Green Ammonia Production

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Язык: Английский

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Tailoring Cu3Nx clusters on TiO2 nanosheets to the sub-nanometric scale for enhancing NH3 photosynthesis

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163915 - 163915

Опубликована: Май 1, 2025

Язык: Английский

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Atomically Dispersed Dual Frustrated Lewis Pairs for Efficient Relay Conversion of Nitrate into Ammonia

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125501 - 125501

Опубликована: Май 1, 2025

Язык: Английский

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Kinetics and mechanism of copper sulfide/graphdiyne nanozyme with enhanced peroxidase-like activity for efficient dye degradation

Reaction Kinetics Mechanisms and Catalysis, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Язык: Английский

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Energy-Efficient Ammonia Production via Coupled Hydrazine Hydrate Oxidation Using CuCo₂O₄ Nanodendrites with Ultrathin Nanosheet Subunits

ACS Materials Letters, Год журнала: 2025, Номер unknown, С. 2310 - 2318

Опубликована: Май 20, 2025

Язык: Английский

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Stable copper-based nanoparticles enhance zinc nitrate battery performance

Cell Reports Physical Science, Год журнала: 2025, Номер unknown, С. 102606 - 102606

Опубликована: Май 1, 2025

Язык: Английский

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