Atomic Defect-Directed Epitaxial Growth of Multimetallic Nanorods for High-Efficiency Alcohol Electro-Oxidation DOI
Yue Liu, Bing Lan,

Yiyi Fan

et al.

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

Published: April 25, 2025

Site-selective epitaxial growth of metals onto shaped nanoparticles represents a versatile strategy for tailoring nanostructures to optimize the optical and catalytic properties. In this study, we systematically elucidate critical factors governing silver platinum atoms gold nanorods (Au NRs), revealing that atomic defects on Au NR surface dictate deposition sites Ag Pt. By precisely modulating conditions density defects, achieve synthesis dumbbell-shaped (DS) thorny-shell (TS) structured Au-AgPt NRs. Notably, DS-Au-AgPt0.24 catalyst demonstrated exceptional performance in alcohol fuel cell reactions, driven by their abundant strong strain effects localized at crown structure. For ethylene glycol electro-oxidation, these NRs achieved mass activity 23.5 A mgPt-1 specific 156.9 mA cm-2, which were 4.1 11.2 times higher than commercial platinum-carbon (Pt/C) catalysts (5.7 14.0 cm-2), respectively. Our findings not only advance mechanistic understanding defect-mediated multimetallic systems but also provide blueprint designing high-performance through atomic-scale structural engineering.

Language: Английский

Atomic Defect-Directed Epitaxial Growth of Multimetallic Nanorods for High-Efficiency Alcohol Electro-Oxidation DOI
Yue Liu, Bing Lan,

Yiyi Fan

et al.

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

Published: April 25, 2025

Site-selective epitaxial growth of metals onto shaped nanoparticles represents a versatile strategy for tailoring nanostructures to optimize the optical and catalytic properties. In this study, we systematically elucidate critical factors governing silver platinum atoms gold nanorods (Au NRs), revealing that atomic defects on Au NR surface dictate deposition sites Ag Pt. By precisely modulating conditions density defects, achieve synthesis dumbbell-shaped (DS) thorny-shell (TS) structured Au-AgPt NRs. Notably, DS-Au-AgPt0.24 catalyst demonstrated exceptional performance in alcohol fuel cell reactions, driven by their abundant strong strain effects localized at crown structure. For ethylene glycol electro-oxidation, these NRs achieved mass activity 23.5 A mgPt-1 specific 156.9 mA cm-2, which were 4.1 11.2 times higher than commercial platinum-carbon (Pt/C) catalysts (5.7 14.0 cm-2), respectively. Our findings not only advance mechanistic understanding defect-mediated multimetallic systems but also provide blueprint designing high-performance through atomic-scale structural engineering.

Language: Английский

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