Twin Boundary-Regulated Platinum–Yttrium Elemental Distributions for Boosting Electrochemical Alcohol Oxidation DOI
Zhen He, Chen Ma, Huangxu Li

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Май 24, 2025

Metastable crystal defects endow nanocrystals with optimized electronic configurations and remarkable electrocatalytic properties. Nevertheless, how the defects, such as twin boundaries, regulate nucleation growth of multimetallic heterostructures requires further study. Herein, platinum-yttrium (PtY) alloys a metastable structure were fabricated by overgrowth on Au nanoparticles, resulting in formation Au@PtY multibranched nanodendrites (Au46Pt40Y14). The branched nanoparticle exhibits Y-rich surface, affirmed both experimental investigation theoretical calculation. Impressively, nanoparticles demonstrate superior mass activity stability toward alcohol oxidation reaction, compared to core-shell (Au67Pt25Y8), PtY (Pt73Y27), commercial Pt/C catalysts. Density functional theory calculations, together operando infrared reflection absorption spectroscopy, suggest that electrochemical characteristics could be ascribed surface. This work opens way for rational design heterometallic nanostructures catalytic applications.

Язык: Английский

Twin Boundary-Regulated Platinum–Yttrium Elemental Distributions for Boosting Electrochemical Alcohol Oxidation DOI
Zhen He, Chen Ma, Huangxu Li

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Май 24, 2025

Metastable crystal defects endow nanocrystals with optimized electronic configurations and remarkable electrocatalytic properties. Nevertheless, how the defects, such as twin boundaries, regulate nucleation growth of multimetallic heterostructures requires further study. Herein, platinum-yttrium (PtY) alloys a metastable structure were fabricated by overgrowth on Au nanoparticles, resulting in formation Au@PtY multibranched nanodendrites (Au46Pt40Y14). The branched nanoparticle exhibits Y-rich surface, affirmed both experimental investigation theoretical calculation. Impressively, nanoparticles demonstrate superior mass activity stability toward alcohol oxidation reaction, compared to core-shell (Au67Pt25Y8), PtY (Pt73Y27), commercial Pt/C catalysts. Density functional theory calculations, together operando infrared reflection absorption spectroscopy, suggest that electrochemical characteristics could be ascribed surface. This work opens way for rational design heterometallic nanostructures catalytic applications.

Язык: Английский

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