Synthesis of Metal Alloy Nanoparticles in Solution by Laser Irradiation of a Metal Powder Suspension

Zhang, Jin; Worley, Jessica; Denommée, Stephane; Kingston, Christopher T.; Jakubek, Zygmunt J.; Deslandes, Yves; Post, and Michael; Simard, Benoît; and, Nadi Braidy; Botton, Gianluigi A.

doi:10.1021/jp027269k

Cited by 89 publications

(58 citation statements)

References 26 publications

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“…1(a). The formation of PtAg nanoparticles was similar to the laser nanoalloying process which can be found elsewhere [10,13]. The STEM image in Fig.…”

Section: Resultssupporting

confidence: 72%

Nano brazing of Pt-Ag nanoparticles under femtosecond laser irradiation

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Huang

et al. 2013

Nano-Micro Lett.

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Nano brazing of Pt-Ag nanoparticles with nano Ag filler metal is reported in this letter, which presents an effective way to join nanoobjects by femtosecond laser irradiation. The nano brazed interface between Pt-Ag and Ag showed good lattice matching along (111)Ag//(111)Ag-Pt. Lattice mismatch can hardly be observed at the interface between the filler metal and Pt-Ag nanoparticle, which is important for the joint strength and normally does not occur during joining. The very low mismatch also suggested that melting and solidification occurred during nano brazing by femtosecond laser. The role of Brownian motion on the nano joining process is also discussed in this paper.

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“…1(a). The formation of PtAg nanoparticles was similar to the laser nanoalloying process which can be found elsewhere [10,13]. The STEM image in Fig.…”

Section: Resultssupporting

confidence: 72%

Nano brazing of Pt-Ag nanoparticles under femtosecond laser irradiation

Ping

Huang

et al. 2013

Nano-Micro Lett.

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“…The laser parameters, such as wavelength, pulse repetition rate, pulse width and pulse energy, affect and control the morphology and the properties of the resulting NPs, which are the shape and size distribution; furthermore, the liquid environment in which generation occurs plays an important role [3]. Thanks to the aforementioned features, this physical technique can be numbered among the rising and environmental friendly methods for nanomaterials synthesis [3], extensively used for many application fields [4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Analytical characterization of laser-generated copper nanoparticles for antibacterial composite food packaging

et al. 2012

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A new type of nanomaterial has been developed as antibacterial additive for food packaging applications. This nanocomposite is composed of copper nanoparticles embedded in polylactic acid, combining the antibacterial properties of copper nanoparticles with the biodegradability of the polymer matrix. Metal nanoparticles have been synthesised by means of laser ablation, a rising and easy route to prepare nanostructures without any capping agent in a liquid environment. As prepared, nanoparticle suspensions have been easily mixed to a polymer solution. The resulting hybrid solutions have been deposited by drop casting, thus obtaining self-standing antibacterial packages. All samples have been characterized by UV-Vis spectroscopy, X-ray photoelectron spectroscopy and electro-thermal atomic absorption spectroscopy. Ion release data have been matched with bioactivity tests performed by Japanese Industrial Standard (JIS) method (JIS Z 2801:2000) against Pseudomonas spp., a very common Gram-negative microbial group able to proliferate in processed food.

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“…Laser ablation of solvent-suspended metal powders has previously been used in our group for synthesis of Au-Ag alloy nanoparticles of predetermined composition. 16 Two general routes for synthesis of the Fe@Au nanoparticles have been explored. The first one consists of making both the Fe core and the Au shell using the laser ablation method.…”

Section: Introductionmentioning

confidence: 99%

Laser-Assisted Synthesis of Superparamagnetic Fe@Au Core−Shell Nanoparticles

et al. 2006

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A novel method combining wet chemistry for synthesis of an Fe core, 532 nm laser irradiation of Fe nanoparticles and Au powder in liquid medium for deposition of an Au shell, and sequential magnetic extraction/ acid washing for purification has been developed to fabricate oxidation-resistant Fe@Au magnetic coreshell nanoparticles. The nanoparticles have been extensively characterized at various stages during and up to several months after completion of the synthesis by a suite of electron microscopy techniques (HRTEM, HAADF STEM, EDX), X-ray diffraction (XRD), UV-vis spectroscopy, inductively coupled plasma atomic emission spectroscopy, and magnetometry. The surface plasmon resonance of the Fe@Au nanoparticles is red shifted and much broadened as compared with that of pure colloidal nano-gold, which is explained to be predominantly a shell-thickness effect. The Au shell consists of partially fused ∼3-nm-diameter fcc Au nanoparticles (lattice interplanar distance, d ) 2.36 Å). The 18-nm-diameter magnetic core is bcc Fe single domain (d ) 2.03 Å). The nanoparticles are superparamagnetic at room temperature (300 K) with a blocking temperature, T b , of ≈170 K. After 4 months of shelf storage in normal laboratory conditions, their mass magnetization per Fe content was measured to be 210 emu/g, ∼96% of the Fe bulk value.

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Synthesis of Metal Alloy Nanoparticles in Solution by Laser Irradiation of a Metal Powder Suspension

Cited by 89 publications

References 26 publications

Nano brazing of Pt-Ag nanoparticles under femtosecond laser irradiation

Nano brazing of Pt-Ag nanoparticles under femtosecond laser irradiation

Analytical characterization of laser-generated copper nanoparticles for antibacterial composite food packaging

Laser-Assisted Synthesis of Superparamagnetic Fe@Au Core−Shell Nanoparticles

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