Synthesis of molybdenum carbide nanoparticles using pulsed wire discharge in mixed atmosphere of kerosene and argon

Chu, Ngo Minh; Hieu, Nguyen Duy; Thi, Dung; Sarathi, R.; Nakayama, Tadachika; Suematsu, Hisayuki

doi:10.1111/jace.16621

Cited by 9 publications

(7 citation statements)

References 27 publications

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“…By cooling this plasma with ambient gas, we can obtain a large number of very fine solid copper nanoparticles. 43,44 Dash et al prepared copper nanoparticles of 16 nm by applying 22KV with 3 F capacitance and pressure of 0.1 MPa. 45,46 Muraia and his coworkers prepared copper nanoparticles of 20-25 nm by evaporation of copper wire on oleic acid vapor/mist by using pulse wire technique.…”

Section: Physical Methodsmentioning

confidence: 99%

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Bhagat¹,

Anand²,

Sharma³

et al. 2021

ECS J. Solid State Sci. Technol.

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Copper nanomaterials due to their unique properties are rapidly finding place as an important component of next-generation material in various sectors such as electronics, machinery, construction, engineering, pharmaceutical, agriculture, energy, environment etc In fact in past decades, researchers have devoted several studies to Cu nanomaterials, and have achieved many innovative results from synthesis to applications, highlighting its immeasurable potential for extensive practical and theoretical applications holding great promises. This review emphasises on the recent progress made in synthesis of copper nanoparticles by various techniques such as physical, chemical and biological methods. The application section describes their utility in several sectors including agriculture, environment, construction, electronics etc Moreover, the emphasis was also laid to understand the uptake mechanism of the copper nanoparticles by plants, the toxicity caused at higher concentrations and the associated implications of exposure to both human and environmental health, including the challenges and difficulties to be addressed in the future.

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Section: Physical Methodsmentioning

confidence: 99%

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Bhagat¹,

Anand²,

Sharma³

et al. 2021

ECS J. Solid State Sci. Technol.

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“…β-MoO 3 is a low-temperature phase of MoO 3 ; therefore, the rapid cooling phenomenon is significant for the synthesis process. 20) In this research, β-MoO 3 powder synthesized by the PWD method 37,39,40) was used to investigate the possibility of its hydration process by exposing it to humid air. α-MoO 3 powder was also used to conduct the same experiment to compare with β-MoO 3 and to confirm previous research results about its non-hydration ability.…”

Section: Introductionmentioning

confidence: 99%

Hydration process of β-MoO₃ powder prepared by pulsed wire discharge method

Chu

Nguyen

Dung

et al. 2022

Jpn. J. Appl. Phys.

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The hydration of β-MoO3 and α-MoO3 powders was investigated through powder exposure experiments at 24 ℃ in the air with a relative humidity of 53%. X-ray diffraction results showed a hydrated phase of MoO3·0.34H2O in only exposed β-MoO3 powder, while the α-MoO3 powder maintained its initial phase. By thermogravimetry-differential thermal analysis and mass spectrometry measurements and the dehydration experiments, the stable temperature range of the hydrated phase made by β-MoO3 was identified below 285 °C, and above this temperature, the hydrated phase transformed back to the original β-MoO3 phase. The other analysis methods using field-emission scanning electron microscopy and field-emission transmission electron microscopy were also used to determine powders’ morphology and size and to confirm phases from their lattice images. To the best of our knowledge, this is the first report on the formation of the hydrated phase by exposing β-MoO3 powder in the humid air.

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“…Pulsed wire discharge (PWD) is a physical vapor deposition method, which has been developed and applied for synthesizing pure metals and their compound nanoparticles. [27][28][29][30][31] This method uses pulsed power from a high-voltage DC source to evaporate a thin metal wire, as shown in Figure 1. When the discharge occurs, a pulsed current is driven through the wire.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of β‐MoO₃ nanowhiskers from core/shell molybdenum/molybdenum oxide wire by pulsed wire discharge

Chu

Diana

Dung

et al. 2021

Int J Applied Ceramic Tech

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β-MoO 3, the molybdenum oxide phase with the highest catalytic activity, is a promising material in optical, chemical, and electronics applications as a replacement for α-MoO 3 . α-MoO 3 1D nanostructures such as whiskers and fibers have been investigated and used in applications. However, difficulties in the synthesis of onedimensional β-MoO 3 have obstructed researchers in the study of its properties. In this research, β-MoO 3 nanowhiskers were synthesized from core/shell molybdenum/molybdenum oxide wires by pulsed wire discharge in mixed oxygen and argon gases. X-ray diffraction analysis identified the main phase in the obtained samples as β-MoO 3 . Electron microscopy observations revealed whiskers with an average length and width of 216 nm and 23 nm, respectively. Transmission electron microscopy lattice imaging confirmed the successful synthesis of β-MoO 3 nanowhiskers. Various models were considered to explain the formation of β-MoO 3 nanowhiskers, including mechanical fragmentation of α-MoO 3 layers as well as vapor-liquid-solid and vaporsolid mechanisms. The phase transformation from α to β-MoO 3 under a nucleation process was explained based on the Mo-O phase diagram. To the best of our knowledge, this is the first report of β-MoO 3 nanowhisker synthesis.

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Synthesis of molybdenum carbide nanoparticles using pulsed wire discharge in mixed atmosphere of kerosene and argon

Cited by 9 publications

References 27 publications

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Hydration process of β-MoO₃ powder prepared by pulsed wire discharge method

Synthesis of β‐MoO₃ nanowhiskers from core/shell molybdenum/molybdenum oxide wire by pulsed wire discharge

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Synthesis of molybdenum carbide nanoparticles using pulsed wire discharge in mixed atmosphere of kerosene and argon

Cited by 9 publications

References 27 publications

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Hydration process of β-MoO3 powder prepared by pulsed wire discharge method

Synthesis of β‐MoO3 nanowhiskers from core/shell molybdenum/molybdenum oxide wire by pulsed wire discharge

Contact Info

Product

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About

Hydration process of β-MoO₃ powder prepared by pulsed wire discharge method

Synthesis of β‐MoO₃ nanowhiskers from core/shell molybdenum/molybdenum oxide wire by pulsed wire discharge