Growth of bubbles containing plasma in water by high-frequency irradiation

Mukasa, Shinobu; Maehara, Tsunehiro; Nomura, Shinfuku; Toyota, Hiromichi; Kawashima, Ayato; Hattori, Yoshiaki; Hashimoto, Yukio; Yamashita, Hiroshi

doi:10.1016/j.ijheatmasstransfer.2010.03.021

Cited by 17 publications

(10 citation statements)

References 24 publications

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“…Configurations (iv-1), (iv-2), and (iv-3) in Figure 4 show different configurations of plasma generation using RF irradiation. Plasma was generated in water by irradiation at a high frequency of 13.56 MHz, with the plasma bubbles forming around the electrode [215][216][217]. Optical emission spectroscopy and a high-speed camera were used to investigate this plasma in detail.…”

Section: Radio Frequency and Microwave Plasma In Liquid Techniquesmentioning

confidence: 99%

“…A large number of papers regarding the synthesis of noble metal NPs (Au, Pt, Pd, and Ag) have been published because noble metal ions are more easily reduced. In particular, the synthesis of Au NPs is Figure 4: Showing configurations of radio frequency and microwave plasma in liquid techniques; (iv-1) [215][216][217][218][219][220][221][222], (iv-2) [223][224][225], and (iv-3) [226], (iv-4) [220,[227][228][229][230][231][232], (iv-5) [233,234], and (iv-6) [235], (iv-7) MW-induced plasma in liquid [236,237], (iv-8) slot-excited MW discharge [238], and (iv-9) MW irradiation by MW oven [239,240].…”

Section: Nanomaterials Produced By Plasma In Liquid Techniquesmentioning

confidence: 99%

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Nanomaterial Synthesis Using Plasma Generation in Liquid

Saito

Akiyama

2015

Journal of Nanomaterials

166

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Over the past few decades, the research field of nanomaterials (NMs) has developed rapidly because of the unique electrical, optical, magnetic, and catalytic properties of these materials. Among the various methods available today for NM synthesis, techniques for plasma generation in liquid are relatively new. Various types of plasma such as arc discharge and glow discharge can be applied to produce metal, alloy, oxide, inorganic, carbonaceous, and composite NMs. Many experimental setups have been reported, in which various parameters such as the liquid, electrode material, electrode configuration, and electric power source are varied. By examining the various electrode configurations and power sources available in the literature, this review classifies all available plasma in liquid setups into four main groups: (i) gas discharge between an electrode and the electrolyte surface, (ii) direct discharge between two electrodes, (iii) contact discharge between an electrode and the surface of surrounding electrolyte, and (iv) radio frequency and microwave plasma in liquid. After discussion of the techniques, NMs of metal, alloy, oxide, silicon, carbon, and composite produced by techniques for plasma generation in liquid are presented, where the source materials, reaction media, and electrode configurations are discussed in detail.

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Section: Radio Frequency and Microwave Plasma In Liquid Techniquesmentioning

confidence: 99%

Section: Nanomaterials Produced By Plasma In Liquid Techniquesmentioning

confidence: 99%

Nanomaterial Synthesis Using Plasma Generation in Liquid

Saito

Akiyama

2015

Journal of Nanomaterials

166

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“…"Singleperiod' ' bubbles appeared when RF only was applied as shown in Fig. 4(a) 29) . A spherical bubble was generated and grew at the tip of the electrode and separated from the electrode due to buoyancy.…”

Section: Decomposition Of Cellulosementioning

confidence: 99%

Hydrogen Production from Glucose and Cellulose Using Radio Frequency In-Liquid Plasma and Ultrasonic Irradiation

Syahrial

Mukasa

Toyota

et al. 2014

J. Jpn. Inst. Energy

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The purpose of this study is to efficiently produce hydrogen gas from saccharide using 27.12 MHz radiofrequency (RF) in-liquid plasma with and without ultrasonic irradiation. The experiments were conducted adopting two different ultrasonic frequencies, one from a 29 kHz horn-type ultrasonic transducer and the other from a 1.6 MHz piezoelectric transducer. The glucose solution and cellulose suspension concentrations were varied from 0.5 wt% to 50 wt% and 0.5 wt% to 20 wt% respectively. Hydrogen gas was then produced by the decomposition of the glucose solution and cellulose suspension by RF in-liquid plasma with and without ultrasonic irradiation. The hydrogen production rate from glucose solution with ultrasonic irradiation applied was greater than that without ultrasonic irradiation. However, no hydrogen production rate enhancement was observed from decomposition of cellulose suspension with ultrasonic irradiation applied. Ultrasonic atomization and agitation enhanced the chemical reaction of nonvolatile glucose in in-liquid plasma. The increase of the gas production rate was caused by the direct decomposition of the glucose by the plasma due to the atomized glucose molecules being fed into the plasma in a bubble. In addition, by using a high-speed camera, it was clarified that acoustic streaming occurred when a 1.6 MHz piezoelectric transducer was used in the experiment.

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“…The relationship between the bubble and plasma has been investigated in a variety of discharge form in liquid [11,12]. The generation of plasma and the behavior of bubbles have been observed by high-speed camera [13].…”

Section: Introductionmentioning

confidence: 99%

Discharge Characteristics of Microwave Plasma in Ethanol Solution

Zhao¹,

Sun²,

Zhu³

et al. 2016

Contrib. Plasma Phys.

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An apparatus was designed for generating plasma in ethanol solution. The plasma was generated on the top of the electrode by applying microwave radiation of 2.45 GHz. The results showed that ignition power decreased with increasing temperature of ethanol solution. However, ignition power increased with increasing pressure and point electrode radius of curvature. Plasma and bubbles were generated periodically in the same manner. The electron temperature of the plasma increased with increasing power, while it decreased with increasing pressure.

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Growth of bubbles containing plasma in water by high-frequency irradiation

Cited by 17 publications

References 24 publications

Nanomaterial Synthesis Using Plasma Generation in Liquid

Nanomaterial Synthesis Using Plasma Generation in Liquid

Hydrogen Production from Glucose and Cellulose Using Radio Frequency In-Liquid Plasma and Ultrasonic Irradiation

Discharge Characteristics of Microwave Plasma in Ethanol Solution

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