High rate synthesis of graphene-encapsulated silicon nanoparticles using pulse-modulated induction thermal plasmas with intermittent feedstock feeding

Tanaka, Yasunori; Shimizu, Kotaro; Akashi, Keita; Onda, Kazuki; Uesugi, Yoshihiko; Ishijima, Tatsuo; Watanabe, Shuichi; Sueyasu, Shiori; Nakamura, Keitaro

doi:10.35848/1347-4065/ab71db

Cited by 10 publications

(7 citation statements)

References 49 publications

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“…This control might be fundamentally important for nanoparticle synthesis if the modulated induction thermal plasma is used [68,69]. We have developed a method for nanoparticle synthesis called 'PMITP+TCFF' method [70][71][72][73][74][75][76], incorporating pulse-modulated induction thermal plasma (PMITP) and time-controlled feeding of feedstock (TCFF).…”

Section: Applications Of Pmitp For Nanopowder Synthesismentioning

confidence: 99%

“…Another example is synthesis of carbon-coated Si nanoparticles using PMITP+TCFF method [76]. In this case, the Si feedstock is supplied to the PMITP; also, the Ar+CH 4 gas mixture was injected downstream of the PMITP.…”

Section: Applications Of Pmitp For Nanopowder Synthesismentioning

confidence: 99%

“…Using two semiconductor power supplies obtained at reasonable cost, a tandem-MITP can be sustained easily. Fifthly, the latest results for MITP application are presented for some nanoparticle synthesis including new techniques of MITP with time-controlled feeding of the feedstock (TCFF) [68][69][70][71][72][73][74][75][76]. The MITP+TCFF method is useful to synthesize nanoparticles at a high production rate.…”

Section: Introductionmentioning

confidence: 99%

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Recent development of new inductively coupled thermal plasmas for materials processing

Tanaka

2021

Advances in Physics: X

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This paper explains recent developments in the field of inductively coupled thermal plasmas (ICTP or ITP) used for materials processing. Inductive coupling technique is important to produce thermal plasma with high gas temperature at high pressures. Conventional cylindrical ICTP was developed originally in the 1960s by T. Reed. It remains widely used for different materials processing today, with almost identical configuration to the original version. Through some revision and improved functionalization, ICTPs of several kinds such as DC-RF hybrid ICTP have also been developed. They are also widely adopted for processing of various materials because of their various benefits. Inductively coupled plasma at low pressures are not treated herein: only thermal plasma with high enthalpy. One is modulated induction thermal plasma (MITP), which has a function of controlling the temperature and chemical active fields in the time domain. Another development in ICTP includes changes in the ICTP configuration such as a planar-ICTP and loop-ICTP. These were developed for large-area materials processing.

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Section: Applications Of Pmitp For Nanopowder Synthesismentioning

confidence: 99%

Section: Applications Of Pmitp For Nanopowder Synthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recent development of new inductively coupled thermal plasmas for materials processing

Tanaka

2021

Advances in Physics: X

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“…Encapsulation of nonconducting silicon oxide nanoparticles within conducting rGO can be used as the "bridgingmaterial" in a field-effect transistor-based biosensor [130,136]. Similarly, Si nanoparticles encapsulated with rGO via electrostatic interaction using APTES has also been reported [137,138], resulting in less destruction and aggregation of SiNPs as compared to pristine nanoparticles. It also exhibited a high reversible capacity of 902 mAh g −1 after 100 cycles at 300 mA g −1 when used as the electrode.…”

Section: Graphene Oxide/encapsulated Nanoparticlesmentioning

confidence: 99%

Graphene Oxide-Based Nanohybrids as Pesticide Biosensors: Latest Developments

Mogha¹

2020

Nanotechnology and the Environment

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Graphene is the most significant two-dimensional nanomaterial with sp 2 hybridized carbon atoms in a honeycomb arrangement with an extremely high surface area, excellent electrical properties, high mechanical strength, and advantageous optical properties and is relatively easy to functionalize and mass produce. Various inorganic nanoparticles incorporated with graphene, such as gold, silver, and palladium nanoparticles are brought into sharp focus due to their catalytic, optical, electronic, and quantized charging/discharging properties. Graphene oxide-based nanohybrids are particularly well suited for biosensing applications and catalysis. Consequently, this area of research has grown to represent one of the largest classes within the scope of materials science and is rapidly becoming a key area in nanoscience and nanotechnology offering significant potential in the development of advanced materials in multiple and diverse applications. Here in this present chapter, synthesis, characterization of graphene oxide, and their nanohybrids are discussed thoroughly with their application in the field of pesticide biosensors. This chapter will help in a further understanding of graphene-based nanohybrids as a biosensing platform for their future applications in a sustainable environment.

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“…Even pure silicon nanoparticles are anticipated as promising materials for use in numerous applications such as lithography [ 2 ], electronic devices [ 3 ], electron transistors [ 4 , 5 ], floating gate memory devices [ 6 , 7 , 8 , 9 ], luminescent thermometers [ 10 ], and lithium ion battery electrodes [ 11 , 12 , 13 ]. Several Japanese groups have recently used thermal plasmas to achieve high-throughput production of silicon nanoparticles for lithium ion battery electrodes [ 14 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Computational Study of Quenching Effects on Growth Processes and Size Distributions of Silicon Nanoparticles at a Thermal Plasma Tail

2021

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In this paper, quenching effects on silicon nanoparticle growth processes and size distributions at a typical range of cooling rates in a thermal plasma tail are investigated computationally. We used a nodal-type model that expresses a size distribution evolving temporally with simultaneous homogeneous nucleation, heterogeneous condensation, interparticle coagulation, and melting point depression. The numerically obtained size distributions exhibit similar size ranges and tendencies to those of experiment results obtained with and without quenching. In a highly supersaturated state, 40–50% of the vapor atoms are converted rapidly to nanoparticles. After most vapor atoms are consumed, the nanoparticles grow by coagulation, which occurs much more slowly than condensation. At higher cooling rates, one obtains greater total number density, smaller size, and smaller standard deviation. Quenching in thermal plasma fabrication is effectual, but it presents limitations for controlling nanoparticle characteristics.

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High rate synthesis of graphene-encapsulated silicon nanoparticles using pulse-modulated induction thermal plasmas with intermittent feedstock feeding

Cited by 10 publications

References 49 publications

Recent development of new inductively coupled thermal plasmas for materials processing

Recent development of new inductively coupled thermal plasmas for materials processing

Graphene Oxide-Based Nanohybrids as Pesticide Biosensors: Latest Developments

Computational Study of Quenching Effects on Growth Processes and Size Distributions of Silicon Nanoparticles at a Thermal Plasma Tail

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