CeO₂ Boosted Fe‐N₅ Electrocatalyst via Relay Catalysis for Modulating Oxygen Reduction Reaction in Al‐Air Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Atomically dispersed iron‐nitrogen‐carbon (Fe‐N‐C) catalysts have demonstrated promising oxygen reduction reaction (ORR) activity. It poses a formidable challenge to simultaneously optimize the adsorption energies of multiple intermediates at single active site. In addition, lack long‐term stability remains significant problem due unavoidable 2‐electron by‐product hydrogen peroxide (H 2 O ). Here, sites are achieved modulate energy while removing by growing second site CeO nanoparticles in situ on surface hollow‐structured Fe‐N 5 , thus improving efficiency and /CeO . Density functional theory (DFT) calculations employed probe into synergistic catalytic interaction between proposing relay mechanism underlying enhanced Furthermore, catalyst is ability scavenge inhibit its destructive effects Additionally, liquid Al – air batteries equipped with display higher power density. This work proffers an innovative vista for conception refinement multi‐active‐site excellent performance prolonged lifespan.

Язык: Английский

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2D Metastable‐Phase Hafnium Oxide Triggers Hydrogen Spillover for Boosting Hydrogen Production

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 27, 2025

Abstract Hydrogen (H) manipulation plays a significantly important role in many applications, which the occurrence of hydrogen spillover generally shows substrate‐dependent behavior. It therefore remains an open question about how to trigger on substrates that are forbidden. Here new metastable‐phase 2D edge‐sharing oxide: six‐hexagonal phase‐hafnium oxide (Hex‐HfO 2 , space group: P6 3 mc (186)) with coordination number six is demonstrated, serves as ideal platform for activating efficient after loading Ru nanoclusters (Ru/Hex‐HfO ). For stark comparison, strongly forbidden when using stable monoclinic phase HfO (M‐HfO P2 1 /c (14), number: seven) substrate. When applied acidic evolution reaction (HER), Ru/Hex‐HfO exhibits low overpotential 8 mV at 10 mA cm −2 and high utilization activity 14.37 A mg −1 30 mV. Detailed mechanism reveals positive H adsorption free energy Hex‐HfO indicating more likely . Furthermore, strong interaction between optimizes desorption intermediate, thus facilitating surface spillover. The discovery provides guidance developing advanced catalysis.

Язык: Английский

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Controllable selenization strategy for in-situ construction of V2CTx MXene-based multiphase electrode materials for simultaneous detection of hydroquinone and catechol in drinking water and beverages

Food Chemistry, Год журнала: 2025, Номер unknown, С. 144234 - 144234

Опубликована: Апрель 1, 2025

Язык: Английский

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Nano‐High Entropy Materials in Electrocatalysis

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 19, 2024

Abstract High entropy materials (HEMs) compositing of at least five elements have gained widespread attention in the field electrocatalysis due to their tunable activities and high stability. These intrinsic properties can be further highlighted when size HEMs comes nanoscale. In nanostructured HEMs, fascinating including large composition space, multi‐element synergy, configuration are expected endow nano‐HEMs with excellent catalytic activity stability, thus providing greater potential for design advanced electrocatalysts. this review, differentiated detail dimensions common synthesis methods summarized. Additionally, from perspective complex nanostructure‐performance relationship, applications systems, water‐splitting (hydrogen evolution reaction (HER), oxygen (OER)), hydrogen oxidation (HOR), reduction (ORR), carbon dioxide (CO 2 RR), nitrogen (NRR) alcohol (AOR) discussed. Finally, main challenges faced by underscored. This review is provide more insights into understanding developing efficient electrocatalytic practical applications.

Язык: Английский

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Co-CoSe heterogeneous fibers with strong interfacial built-in electric field as bifunctional electrocatalyst for high-performance Zn-air battery

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 677, С. 140 - 150

Опубликована: Авг. 10, 2024

Язык: Английский

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Collaborative effect between single-atom Re and S vacancy on modulating localized electronic structure of MoS2 catalysts for alkaline hydrogen evolution

Nano Research, Год журнала: 2024, Номер unknown

Опубликована: Авг. 30, 2024

Язык: Английский

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Photothermal Composites for In-Situ Trace Oil Detection on Ultra-Clean Surfaces

Опубликована: Янв. 1, 2025

Oil is widely used as a lubricant in many industries. However, the final product, oil often considered contaminant. In various production processes, such semiconductor manufacturing, precision machining, and optical device fabrication, ultra-clean surfaces are crucial. residues on these can adversely affect product performance quality. Detecting controlling enables enhancing reliability consistency. Previous lipid detection studies necessitate complex pre-processing, large instruments, or specialized manipulation data reading capabilities. Existing methods for trace still cannot achieve on-site real-time monitoring. This study presents photothermal conversion-based platform detection. Using polyester fiber membranes substrate, composite material of chitosan MXene was modified to detect under near-infrared excitation at 808 nanometers. Due their inherent thermal conductivity ability trap heat inside, molecules intensify material's temperature rise. By connecting imaging module smartphone, be achieved.

Язык: Английский

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Density effect of Re1 electronic promoter on the activity of Pt1-catalyzed hydrosilylation

Molecular Catalysis, Год журнала: 2025, Номер 573, С. 114851 - 114851

Опубликована: Янв. 18, 2025

Язык: Английский

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Photothermal Composites for In-situ Trace Oil Detection on Ultra-clean Surfaces

Talanta, Год журнала: 2025, Номер 288, С. 127699 - 127699

Опубликована: Фев. 5, 2025

Язык: Английский

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Nano high-entropy materials: Controllable synthesis, characterization techniques and thermal/photo catalytic applications

Applied Materials Today, Год журнала: 2025, Номер 43, С. 102631 - 102631

Опубликована: Фев. 17, 2025

Язык: Английский

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