Size-Controlled Ni Nanoparticles Formation by Solution Glow Discharge

Saito, Genya; Hosokai, Sou; Akiyama, Tomohiro; Yoshida, Souki; Yatsu, Shigeo; Watanabe, Seiichi

doi:10.1143/jpsj.79.083501

Cited by 21 publications

(22 citation statements)

References 16 publications

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“…NiNPs have been synthesized from discharge plasmas generated on a nickel cathode (immersed in H2SO4 [184], K2CO3 [123] and NaOH [125,185] solutions), and the NiNPs were observed in the solution as well as on the surface of the Ni cathode. The scanning electron microscope (SEM) image of NiNPs in the solution synthesized by Toriyabe et al [123] is shown in Fig.…”

Section: Magnetic Materialsmentioning

confidence: 99%

A review of plasma–liquid interactions for nanomaterial synthesis

Chen¹,

Li²,

Li³

2015

J. Phys. D: Appl. Phys.

312

225

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Over the past decades, a new branch of plasma research, the nanomaterial (NM) synthesis by plasma-liquid interactions (PLIs), is rapidly rising, mainly due to the recently developed various plasma sources operated from low to atmospheric pressures. The PLIs provide novel plasma-liquid interfaces where many physical and chemical processes take place. By exploiting these physical and chemical processes, various NMs ranging from noble metal nanoparticles to graphene nanosheets can be easily synthesized. The currently rapid development and increasingly wide utilization of the PLI method naturally lead to an urgent requirement for presenting a general review. This paper reviews the current status of research on plasma-liquid 2 interactions for nanomaterial syntheses. Focus is on the comprehensive understanding of the synthesis process and perceptive opinions on the present issues and future challenges in this subject.

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Section: Magnetic Materialsmentioning

confidence: 99%

A review of plasma–liquid interactions for nanomaterial synthesis

Chen¹,

Li²,

Li³

2015

J. Phys. D: Appl. Phys.

312

225

View full text Add to dashboard Cite

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“…As reported previously, 16,19,22,23 the experimental setup consisted of two electrodes in a glass cell with a capacity of 300 ml. The cathode consisted of a metal wire with a diameter of 1.0 mm.…”

Section: Methodsmentioning

confidence: 99%

“…When the full-plasma electrode was used, infrared radiation radiated continuously at the electrode edge (b), and plasma emission was also centered on the edge (c) plasma. 18,19,22 The particle size tends to decrease with an increase in the applied voltage. Additionally, the SEM observation of the electrode after electrolysis at different voltages, shown in Figs.…”

Section: B Effects Of the Electrolyte Concentrationmentioning

confidence: 99%

“…For controlling the particle size, higher voltages using low electrolyte concentrations were effective. The particle size decreased from 137 nm to 70 nm when the applied voltage changed from 65 V to 590 V. 22 As mentioned above, the experimental parameters for controlling the synthesized nanoparticles has been investigated. However, the relationship between the properties of the plasma, such as the excitation temperatures and synthesized nanoparticles, has not been clearly understood.…”

Section: Introductionmentioning

confidence: 99%

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Excitation temperature of a solution plasma during nanoparticle synthesis

Saito

Nakasugi

Akiyama

2014

Journal of Applied Physics

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Excitation temperature of a solution plasma was investigated by spectroscopic measurements to control the nanoparticle synthesis. In the experiments, the effects of edge shielding, applied voltage, and electrode material on the plasma were investigated. When the edge of the Ni electrode wire was shielded by a quartz glass tube, the plasma was uniformly generated together with metallic Ni nanoparticles. The emission spectrum of this electrode contained OH, H-alpha, H-beta, Na, O, and Ni lines. Without an edge-shielded electrode, the continuous infrared radiation emitted at the edge created a high temperature on the electrode surface, producing oxidized coarse particles as a result. The excitation temperature was estimated from the Boltzmann plot. When the voltages were varied at the edge-shielded electrode with low average surface temperature by using different electrolyte concentrations, the excitation temperature of current-concentration spots increased with an increase in the voltage. The size of the Ni nanoparticles decreased at high excitation temperatures. Although the formation of nanoparticles via melting and solidification of the electrode surface has been considered in the past, vaporization of the electrode surface could occur at a high excitation temperature to produce small particles. Moreover, we studied the effects of electrodes of Ti, Fe, Ni, Cu, Zn, Zr, Nb, Mo, Pd, Ag, W, Pt, Au, and various alloys of stainless steel and Cu-Ni alloys. With the exception of Ti, the excitation temperatures ranged from 3500 to 5500 K and the particle size depended on both the excitation temperature and electrode-material properties

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“…13 In addition, the size and composition of these nanoparticles can be controlled by changing the experimental conditions. 14,15 This method for producing nanoparticles has many advantages: (1) it requires a simple experimental setup without the need for a vacuum chamber; (2) there is no need to supply any gas; (3) a conductive electrode is used as the raw material, and harmful reductants or expensive agents are not required; and (4) it can be applied to any electrically conductive metal/alloy. To produce nanoparticles for various applications, control of the particle size and efficient production are essential.…”

Section: Introductionmentioning

confidence: 99%

Surface morphology of a glow discharge electrode in a solution

Saito

Hosokai

Tsubota

et al. 2012

Journal of Applied Physics

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Phase-field modeling of three-phase electrode microstructures in solid oxide fuel cells Appl. Phys. Lett. 101, 033909 (2012) Dynamic modelling and simulation of a polymer electrolyte membrane fuel cell used in vehicle considering heat transfer effects J. Renewable Sustainable Energy 4, 043107 (2012) Colloidal electroconvection in a thin horizontal cell. III. Interfacial and transient patterns on electrodes J. Chem. Phys. 137, 014504 (2012) Use of magnetite as anode for electrolysis of water J. Appl. Phys. 111, 124911 (2012) Additional information on J. Appl. Phys. This paper describes the surface morphology of a glow discharge electrode in a solution. In the experiments detailed in the paper, the effects of electrolysis time, solution temperature, voltage, electrolyte concentration, and surface area on the size of nanoparticles formed and their amount of nanoparticles produced were examined to study the surface morphologies of the electrodes. The results demonstrated that the amount of nanoparticles produced increased proportionally with the electrolysis time and current. When the voltages were below 140 V, surfaces with nanoparticles attached, called "Particles" type surfaces, were formed on the electrode. These surfaces changed and displayed ripples, turning into "Ripple" type surfaces, and the nanoparticle sizes increased with an increase in the amount of nanoparticles produced. In contrast, at voltages over 160 V, the surfaces of the electrodes were either "Random" or "Hole" type and the particle sizes were constant at different amount of nanoparticles produced. V C 2012 American Institute of Physics.

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Size-Controlled Ni Nanoparticles Formation by Solution Glow Discharge

Cited by 21 publications

References 16 publications

A review of plasma–liquid interactions for nanomaterial synthesis

A review of plasma–liquid interactions for nanomaterial synthesis

Excitation temperature of a solution plasma during nanoparticle synthesis

Surface morphology of a glow discharge electrode in a solution

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