Dealloying of Quasi-High Entropy Alloys: Fabrication of Porous Noble Metals/Metal Oxides

Metals, Journal Year: 2025, Volume and Issue: 15(2), P. 114 - 114

Published: Jan. 25, 2025

High entropy alloys (HEAs) have been widely studied due to their special crystal structure, but bulk structure and low specific surface area limit further application in broader fields. In this work, the dealloying of precious metal Cu35Pd35Ni25Ag5 quasi-HEAs is performed. Porous noble metals with micro prism array porous PdO/Ag2O/NiO oxides nano “ligament/pore” are obtained by constant potential free dealloying, respectively. way, porosification achieved. Moreover, effects parameters on pore morphology phase dealloyed materials studied, evolution mechanisms structures different products discussed. The work provides strategies for preparation method. These present great as functional hot fields such catalysis energy storage.

Language: Английский

A Review on Electrochemical Water Splitting Electrocatalysts for Green H₂ Production: Unveiling the Fundamentals and Recent Advances

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Green H2 production via electrochemical water splitting has emerged as a pivotal solution for achieving sustainable energy future. This Review delves into the fundamentals of splitting, focusing on O2 evolution reaction (OER) and (HER), focuses critical role electrocatalysts in these processes. Precious metals such paltinum iridium remain benchmarks catalytic performance; however, their scarcity high cost necessitate development alternative materials. Recent advances Earth-abundant catalysts, including transition-metal oxides, carbides, nitrides, sulfides, have shown promise balancing activity, durability, affordability. The integration nanostructuring techniques computational modeling enabled design catalysts with enhanced active site exposure electronic properties. Furthermore, highlights challenges material degradation, overpotentials, gas crossover, along potential solutions like protective coatings, bifunctional advanced electrolyzer designs. Future prospects emphasize artificial intelligence, hybrid systems, manufacturing accelerating progress. comprehensive review underscores significance bridging fundamental research technological innovations to scale up green hydrogen production, addressing demands while mitigating environmental impacts.

Language: Английский

Recent Advancement in Electrocatalytic Water Splitting Facilitated by the Sulfide Oxidation Reaction

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Language: Английский