Effect of Pd Ions on the Generation of Ag and Au Heterogeneous Nanoparticles Using Laser Ablation in Liquid

Heterogeneous Ag/Au nanoparticles combined with Pd ions were generated by irradiating Ag/Au metal targets in a Pd solution with nanosecond and femtosecond lasers. AgPd and AuPd nanoparticles were generated by laser fragmentation and bonded. We numerically analyzed the hot spots with electromagnetic...

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Bibliographic Details
Published in:Applied sciences 2021-02, Vol.11 (4), p.1394
Main Authors: Yoon, Sangwoo, Yoo, Kye Sang, Kim, Joohan
Format: Article
Language:English
Subjects:
Ablation
Alloys
Bioengineering
Catalysis
Catalysts
Cavitation
Drug delivery
Drug delivery systems
Efficiency
Electric fields
Electromagnetic fields
Energy
Femtosecond pulsed lasers
Gold
heterogeneous nanoparticles
Intermetallic compounds
Ions
Laser ablation
laser ablation in liquid
Lasers
Nanoparticles
Optical properties
Optoelectronics
Palladium
Pd ions
Silver
Surfactants
Wave power
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Summary:Heterogeneous Ag/Au nanoparticles combined with Pd ions were generated by irradiating Ag/Au metal targets in a Pd solution with nanosecond and femtosecond lasers. AgPd and AuPd nanoparticles were generated by laser fragmentation and bonded. We numerically analyzed the hot spots with electromagnetic field enhancement of nanoparticles of different sizes separated by various distances. AgPd and AuPd nanoparticles differing in diameter were generated and showed different characteristics compared to typical core-shell heterogeneous nanoparticles. Pd ions played an important role in the generation of nanoparticles in liquid via laser ablation. The femtosecond laser produced both pure and heterogeneous nanoparticles of uniform size. The nanosecond laser produced pure nanoparticles with a relatively non-uniform size, which developed into spherical heterogeneous nanoparticles with a uniform (small) size in the presence of Pd ions. These nanoparticles could optimize applications such as photothermal therapy and catalysis.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11041394