Preparation of Co/Ag nanocompound fluid using ASNSS with aid of ultrasonic orthogonal vibration

Chang, Ho; Kao, Mu‐Jung; Jwo, Ching Song; Kuo, Chun‐Yan; Yeh, Yu Hsuan; Tzeng, Wei Cheng

doi:10.1016/j.jallcom.2010.04.127

Cited by 9 publications

(6 citation statements)

References 27 publications

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“…Submerged arcs generated in the liquid 6 7 8 9 10 11 are characterized by spatial confinement with very high pressure, which might allow the growth of alloy NCs by chemical reaction. Practically, it turns out that if two electrodes with different materials are employed, NCs of each type of materials are produced but no alloy is formed 12 . Sintered targets are then preferred to get alloyed NCs 13 14 .…”

mentioning

confidence: 99%

Synthesis of nanocrystals by discharges in liquid nitrogen from Si–Sn sintered electrode

Kabbara

Noël

Ghanbaja

et al. 2015

Sci Rep

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The synthesis feasibility of silicon–tin nanocrystals by discharges in liquid nitrogen is studied using a Si–10 at % Sn sintered electrode. Time-resolved optical emission spectroscopy shows that silicon and tin melt almost simultaneously. The presence of both vapours does not lead to the synthesis of alloyed nanocrystals but to the synthesis of separate nanocrystals of silicon and tin with average sizes of 10 nm. These nanocrystals are transformed into amorphous silicon oxide (am–SiO2) and β–SnO2 by air oxidation, after evaporation of the liquid nitrogen. The synthesis of an am-Si0.95Sn0.05 phase around large silicon crystals (~500 nm) decorated by β–Sn spheroids is achieved if the current flowing through electrodes is high enough. When the sintered electrode is hit by powerful discharges, some grains are heated and tin diffuses in the large silicon crystals. Next, these grains are shelled and fall into the dielectric liquid.

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mentioning

confidence: 99%

Synthesis of nanocrystals by discharges in liquid nitrogen from Si–Sn sintered electrode

Kabbara

Noël

Ghanbaja

et al. 2015

Sci Rep

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“…The EDM method has already been discussed by Ichinose et al [5], and furthermore, Tien et al [6] discovered that the resultant silver nanofluid fabricated by EDM method not only contains silver nanoparticles but also ionic silver [7], both can apply in the sterilization, for example, Staphylococcus aureus, and already tested by Tien et al [8]. In addition, for commonly nanofluid applications, the thermal conductive material, like diamond nanofluid [9], Al 2 O 3 [10], carbon nanotubes [11], TiO 2 [12], Cu [13], Ag [14], and so forth nanofluids, the thermal conductive properties had discussed, since the particle concentration is high and size in particle is low which results in good quality of thermal conductivity behavior [15]. For nanofluid application issue, nanofluid must be strongly stable which does not sediment before application or analysis, but many factors may affect the stability of suspension, such as concentration of particles, particle size in diameter, solution properties, electric conductivity, and pH [16].…”

Section: Introductionmentioning

confidence: 99%

Rapid and Efficient Synthesis of Silver Nanofluid Using Electrical Discharge Machining

Tseng

Lee

Liao

et al. 2013

Journal of Nanomaterials

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The electrical discharge machining (EDM) system has been proven feasible as a rapid and efficient method for silver nanofluid preparation. This study prepared the silver nano-fluid via EDM and investigated the relationship between its process parameters and product characteristics. The prior study had found that the silver nano-fluid prepared by EDM contained both silver nanoparticles and silver ions. Silver ions had revealed the cause of the high suspension of the silver nanoparticles. To examine the relationship between the stability of silver nanofluid and the process parameters, this study quantified the relationship of process parameters to the material removal rate (MRR) of silver electrode and silver ion output rate (IOR) in the fluid, in order to achieve the most effective process parameter condition. Furthermore, the stability of silver nano-fluid was analyzed by various devices, including UV-Vis spectroscopy, size-distribution, and Zeta-potential analyzer. The effects of MRR, IOR, particle size, Zeta-potential, and optical properties of silver nanofluid under different process parameters are also discussed.

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“…They obtained Ag-Pt bimetallic particles in the form of nanocomposites and Pt oxide NPs. From Co and Ag electrodes immersed in a 0.1M (HCl and NaOH) electrolyte, Chang et al [5] combined a DC pulsed excitation with ultrasonic vibration (at ~20 kHz). They got a mixture of linked Ag and Co NPs with an average size of 30 nm.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ag and Cd nanoparticles by nanosecond-pulsed discharge in liquid nitrogen

Trad

Nominé

Tarasenka

et al. 2019

Front. Chem. Sci. Eng.

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The synthesis of CdO, Ag2O (5 nm) and Ag (~20-30 nm) nano-objects is achieved simultaneously by nanosecond-pulsed discharges in liquid nitrogen between one cadmium electrode and one silver electrode. Oxidation occurs when liquid nitrogen is fully evaporated and nanoparticles are in contact with the air. No alloy is formed, whatever the conditions, even though both elements are present simultaneously, as showed by timeresolved optical emission spectroscopy. This lack of reactivity between elements is attributed to the high pressure within the discharge that keeps each metallic vapor around the electrode it comes from. Each element exhibits a specific behavior. Cubic Cd particles, formed at 4 kV, get elongated with filamentary tips when the applied voltage reaches 7 and 10 kV. Cd wires are formed by assembly in liquid nitrogen of Cd nanoparticles driven by dipole assembly, and not by dielectrophoresis. On the contrary, silver spherical particles get assembled into 2D dendritic structures. The anisotropic growth of these structures is assumed to be due to the existence of pressure gradients.

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Preparation of Co/Ag nanocompound fluid using ASNSS with aid of ultrasonic orthogonal vibration

Cited by 9 publications

References 27 publications

Synthesis of nanocrystals by discharges in liquid nitrogen from Si–Sn sintered electrode

Synthesis of nanocrystals by discharges in liquid nitrogen from Si–Sn sintered electrode

Rapid and Efficient Synthesis of Silver Nanofluid Using Electrical Discharge Machining

Synthesis of Ag and Cd nanoparticles by nanosecond-pulsed discharge in liquid nitrogen

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