Synthesis Strategies for High Entropy Nanoparticles

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract Nanoparticles (NPs) of high entropy materials (HEMs) have attracted significant attention due to their versatility and wide range applications. HEM NPs can be synthesized by fragmenting bulk HEMs or disintegrating recrystallizing them. Alternatively, directly producing in NP form from atomic/ionic/molecular precursors presents a challenge. A widely adopted strategy involves thermodynamically driving formation leveraging the entropic contribution but incorporating strategies limit growth at elevated temperatures used for maximizing entropy. second approach is kinetically drive promoting rapid reactions homogeneous reactant mixtures using highly diluted precursor dissolutions. Additionally, experimental evidence suggests that enthalpy plays role processes moderate temperatures, with energy cost generating additional surfaces interfaces nanoscale stabilizing phase. This review critically assesses various synthesis developed preparation, highlighting key illustrative examples offering insights into underlying mechanisms. Such are critical fine‐tuning conditions achieve specific outcomes, ultimately enabling effective optimized generations these advanced both current emerging applications across scientific technological fields.

Language: Английский

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ZnCo2O4/LaAlO3 transparent pn junction towards enhanced photoelectric response and stability via interfacial homogeneous high entropy oxide perovskite La(Cu0.2Co0.2Ni0.2Fe0.2Mn0.2)O3 QDs

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162220 - 162220

Published: April 1, 2025

Language: Английский

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Electrocatalytic Reduction of CO₂ to Long-Chain Hydrocarbons on (FeCoNiCu)₃O₄ Medium Entropy Oxide Nanoparticles

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 4196 - 4204

Published: April 20, 2025

Electrocatalytic CO2 reduction reaction (CO2RR) to valuable multicarbon (C2+) fuels and chemicals presents a promising strategy mitigate atmospheric accumulation promote the closure of carbon cycle. However, significant challenges persist in achieving both high product selectivity sustained stability CO2RR. In this study, catalytic performance (Fe,Co,Ni,Cu)3O4 medium entropy oxide (MEO) nanoparticles anchored on reduced graphene (rGO) was evaluated for The MEO-rGO catalyst exhibited remarkable activity, cathodic current density -0.5 A cm-2 at -1.7 V, significantly outperforming bare nickel foam (-0.15 cm-2). Additionally, demonstrated total Faradaic efficiency (FE) 60.3% C2+ products, comprising 30.6% C5H12O 29.7% C5H10O. This exceptional toward long-chain hydrocarbons is attributed enhanced C-C coupling surface, facilitated by energy barriers. Density functional theory (DFT) calculations further revealed that adsorption MEO surface are energetically favorable processes.

Language: Английский

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Dual functional high entropy perovskite La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O3 interfacial transition layer modified Cu2Y2O5/CdIn2O4 transparent pn junction towards photovoltaic enhancement

Ceramics International, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

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