Largely Promoted C–H Activation in Methane with O₂ via d-Orbital Hybridization Induced by CuO_x Supported on ZnO

ACS Catalysis, Год журнала: 2025, Номер 15(3), С. 1607 - 1615

Опубликована: Янв. 15, 2025

Efficiently converting methane (CH4) to C1 products such as CH3OH, HCHO, and CH3OOH is considered a promising route for the chemical industry, while huge challenge of low CH4 activation rate still remains. Here, Cu/ZnO composite catalyst with CuOx supported on ZnO synthesized modify electronic structure utilized conversion. The fast e– transfer channel → Cu O2 facilitates dissociation •OOH, which promotes charge separation and, in parallel, enables oxidation •CH3 by h+ left acceleration effect situ generated •OOH. Mechanistic studies revealed that additional d-π*/d-σ-orbital hybridization between adsorbed O2/CH4 molecules plays decisive roles activation, resulted highest signal, so far we know, ultimately remarkably high yield 21.25 mmol g–1 h–1 100% selectivity over optimized 1 wt % photocatalyst. This work offers valuable guidance designation conversion presence O2.

Язык: Английский

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Scheelite ZnMoO4 cathode catalyst boosts the cycle durability at a wide range temperature of Li-O2 batteries through crystal structure rearrangement by oxygen vacancy

Advanced Composites and Hybrid Materials, Год журнала: 2025, Номер 8(1)

Опубликована: Янв. 20, 2025

Язык: Английский

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Defect mechanism of the Bi_xSb_2−xTe₃ alloy catalyst for lithium–oxygen battery applications

Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The concentration of antisite defects and holes is modulated by adjusting the molar ratio Bi Sb in 2D layered x 2− Te 3 cathode material, which act as catalytic sites to enhance electrochemical performance LOBs.

Язык: Английский

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Defective Zn1-xCuxS nanosheet as efficient and durable cathode catalyst for photo-assisted Li-O2 batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161117 - 161117

Опубликована: Фев. 1, 2025

Язык: Английский

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Coherent Single‐Atom Dipole–Dipole Coupling Mediates Holistic Regulation of K⁺ Migration for Superior Energy Storage and Dendrite‐Free Metal Deposition

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Abstract Potassium‐based batteries, including potassium‐ion (PIBs) and potassium metal batteries (PMBs), are gaining attention as alternatives to lithium‐ion (LIBs). However, potassium's large ionic radius (1.38 Å) reduces charge density, weakens solvation, increases energy barriers for K + diffusion, leading slower reaction kinetics, thicker solid electrolyte interphase (SEI) layers, dendrite formation. To address these challenges, a novel single‐atom Fe‐N 4 dipole–dipole coupling (SA.Fe) is proposed. The unique coordination highly conductive Ketjen black (KB) substrate establish rapid horizontal electron transfer network, enhancing electrode interface reactions. Moreover, Fe‐N‐C generates short‐range polar electric field, improving affinity diffusion. This coherent effectively regulates migration, significantly kinetics lowering diffusion barriers. SA.Fe anode delivers high reversible capacities (446.3 mAh g −1 ) exceptional durability (10 000 cycles at 2.0 A in PIBs, alongside remarkable stability (600 0.5 mA cm −2 fast (K metal) deposition without formation PMBs. study highlights the potential of dipole efficient storage dendrite‐free offering promising pathway next‐generation potassium‐based systems.

Язык: Английский

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Upcycling Spent Lithium‐Ion Batteries: Constructing Bifunctional Catalysts Featuring Long‐Range Order and Short‐Range Disorder for Lithium‐Oxygen Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Upcycling of high‐value metals (M = Ni, Co, Mn) from spent ternary lithium‐ion batteries to the field lithium‐oxygen is highly appealing, yet remains a huge challenge. In particular, alloying recovered M components with Pt and applied as cathode catalysts have not been reported. Herein, fresh L1 2 ‐type 3 medium‐entropy intermetallic nanoparticle first proposed, confined on N‐doped carbon matrix (L1 ‐Pt (Ni 1/3 Co Mn )@N‐C) based 111 typed LiNi 1‐x‐y x y O cathode. This well‐defined catalyst combines both features long‐range order face‐centered cubic structure short‐range disorder in sites. The former contributes enhancing structural stability, latter further facilitates deeply activating catalytic activity Experiments theoretical results demonstrate that local coordination environment electronic distribution are fundamentally modulated via surrounding disordered atoms, which greatly optimize affinity toward oxygen‐containing intermediates facilitate deposition/decomposition kinetics thin‐film Li discharge products. Specifically, 1/3) @N‐C exhibits an ultra‐low overpotential 0.48 V achieves 220 cycles at 400 mA g −1 under 1000 mAh . work provides important insights for recycling into advanced catalyst‐related applications.

Язык: Английский

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The Role of Lattice Distortion in Catalysis: Functionality and Distinctions from Strain

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Abstract Achieving high‐performance catalysts is imperative for clean energy and environmental applications. In this context, an expanding body of research underscores the critical significance structural modifications, with lattice distortion emerging as intrinsic reconfiguration atomic arrangements that profoundly influences catalytic processes. By contrast, strain typically arises from interfacial mismatches or external forces. Building on these distinctions, review systematically compares concepts, examining their definitions, origins, criteria, characterization methods, impacts activity. Special emphasis placed mechanistic roles in catalysis, particularly its ability to enhance function through structure modification, carrier migration dynamics modulation, surface chemistry enhanced catalyst stability. Furthermore, impact enhancing reactivity elucidated by influencing molecular adsorption activation, optimizing reaction pathways, tailoring active sites, coupling spin polarization effects promote efficient performance. Finally, remaining challenges future outlook synergistic regulation local strain, multi‐scale dynamic in‐situ characterization, sustainable strategies practical applications are discussed, offering valuable insights advancing scalable chemical transformation technologies.

Язык: Английский

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Construction of Co3O4@NiMoO4 core-shell structure for high-current density photo-assisted lithium-oxygen battery

Applied Surface Science, Год журнала: 2024, Номер 681, С. 161551 - 161551

Опубликована: Окт. 18, 2024

Язык: Английский

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Recent advancements in hexacyanoferrate-based electrode materials for supercapacitor applications: A comprehensive review

Journal of Energy Storage, Год журнала: 2024, Номер 103, С. 114160 - 114160

Опубликована: Окт. 24, 2024

Язык: Английский

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Optimizing polysulfides adsorption and conversion via crystal-strain modulation for performance-enhanced Li-S batteries

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157724 - 157724

Опубликована: Ноя. 1, 2024

Язык: Английский

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