Influence of Nanoparticle Seeds on the Formation and Growth of High Entropy Alloys during Core@Shell Nanoparticle Synthesis

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

The growth of inorganic shells on nanocrystal seeds to form core@shell nanoparticles is well-known enhance and improve properties performance, therefore foundational many applications. High entropy alloys, which contain five or more metals in near-equal amounts, are emerging as important materials due their synergistic properties. Integrating high alloys into the has potential combine expand benefits both. However, compositional complexity complicates shell because competing reactions byproducts that possible. Here, we report a synthetic protocol for growing alloy metal nanoparticle seeds, along with mechanistic insights from time-point studies define guidelines controlling composition, thickness, modes. By studying NiPdPtRhIr, SnPdPtRhIr, SnNiPdPtIr Au NiFePdRhIr both Pt find seed modifies reaction pathways accelerates formation compared when they synthesized directly absence seed. We also identify produce freestanding multimetallic particles instead desired shells, well evidence galvanic exchange ripening processes contribute growth. Based these insights, compiled roadmap design rules was then applied synthesis additional including SnNiFeRhIr SnNiFeCoPd, tolerance relative what can be achieved through direct synthesis.

Language: Английский

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Heterostructure Engineering in High‐Entropy Alloy Catalysts

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

Published: Dec. 9, 2024

ABSTRACT Confronting the limitation of traditional homogeneous high‐entropy alloys (HEAs) with randomly distributed elements and active sites, heterostructured HEAs were developed to further amplify catalytic activity stability. This perspective dissects genesis heterogeneity within HEAs, highlighting how their expansive compositional space facilitates customization heterogeneity. By manipulating key factors, such as chemical affinity, standard redox potentials, oxidation potential, researchers are tapping into unprecedented attributes. Strategies like acid leaching, galvanic replacement, additive deposition broadening structural repertoire steering development catalysts. synthesizes current discoveries, introduces provocative concepts, provides a roadmap for engineering in HEA catalysts, particularly harnessing elevate efficiency. The confluence theoretical practical advancements is anticipated lead way evolution endowing them exceptional capabilities.

Language: Английский

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Unveiling the potential of high-entropy materials toward high-energy metal batteries based on conversion reactions: synthesis, structure, properties, and beyond

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104054 - 104054

Published: Jan. 1, 2025

Language: Английский

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Multistep Antimony-Seeded Pathway to Catalytic High-Entropy Skutterudite-Type (CoNiRhIrRu)Sb₃ Intermetallic Nanoparticles

Chemistry of Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Language: Английский

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Colloidal Synthesis of Thiospinel High-Entropy Sulfide Star-like Nanocrystals with High Cycling Stability for the Oxygen Evolution Reaction

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

High-entropy semiconducting nanocrystals involving the random incorporation of five or more metals within a single, disordered lattice are receiving significant research interest as catalytic materials. Among these, high-entropy sulfide (HES) demonstrate potential electrocatalysts but have been slower to gain compared other systems due complications introduced by multistep, high-temperature synthesis techniques and issues material stability during performance. In this work, we report simple, reproducible, scalable HES produce star-like nanocrystals. The show promise with high maintaining uniform overpotential 1.5% initial value for over 2,200 cycles while rotating, values low 313 mV at 10 mA/cm2 oxygen evolution reaction (OER) in alkaline media. Our work provides low-temperature, colloidal method formation highly complex, phase-pure thiospinel

Language: Английский

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High entropy nanomaterials for zero-emission energy systems: advanced structural design, catalytic performance and functional mechanisms

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Synthesis of high-entropy materials

Nature Synthesis, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 3, 2024

Language: Английский

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Growth behavior of heavy metal sulfide particles: A comparison between gas-liquid and liquid-liquid sulfidation

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 154, P. 615 - 623

Published: Aug. 24, 2024

Language: Английский

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Enhancing the anchoring, dissociation, and conversion efficiency of polysulfides: The role of CoFe@N-C cathode material with electron excitation for lithium-sulfur batteries

Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 977, P. 118876 - 118876

Published: Dec. 11, 2024

Language: Английский

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