Acoustic levitation synthesis and subsequent physicochemical properties of bimetallic composite nanoparticles

Bimetallic noble-metal nanoparticles were synthesized in a containerless state via acoustic levitation. We chose oleylamine as stabilizer and borane-t-butylamine complex as reducing agent to prepare the Au–Ag nanoparticles in organic phase. The synthesis process, particle size distribution, morpholo...

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Bibliographic Details
Published in:Applied physics letters 2023-02, Vol.122 (8)
Main Authors: Zheng, Yuhang, Zhuang, Qiang, Ruan, Ying, Wei, Bingbo
Format: Article
Language:English
Subjects:
Acoustic levitation
Acoustic properties
Applied physics
Bimetals
Catalytic activity
Chemical composition
Chemical synthesis
Gold
Nanoparticles
Nitrophenol
Noble metals
Optical properties
Particle size distribution
Reducing agents
Silver
Synergistic effect
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Summary:Bimetallic noble-metal nanoparticles were synthesized in a containerless state via acoustic levitation. We chose oleylamine as stabilizer and borane-t-butylamine complex as reducing agent to prepare the Au–Ag nanoparticles in organic phase. The synthesis process, particle size distribution, morphology, optical property, chemical composition, and catalytic performance of prepared bimetallic nanoparticles were characterized and analyzed. The Au–Ag nanoparticles synthesized in acoustic levitation exhibited a smaller size, narrower distribution range, and improved catalytic performance in 4-nitrophenol reduction compared with the normal container condition. In acoustic levitation, the catalytic activity of equiatomic Au–Ag nanoparticles was significantly enhanced due to synergistic effects.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0142319