Plasma Synthesis of Advanced Metal Oxide Nanoparticles and Their Applications as Transparent Conducting Oxide Thin Films

Sohn, Hong Yong; Murali, Arun

doi:10.3390/molecules26051456

Cited by 17 publications

(10 citation statements)

References 110 publications

(116 reference statements)

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“…The formation of the nanoparticles followed the scheme presented in Figure 3 . A more thorough explanation of the method is presented in the recent paper [ 46 ] of the same authors. An earlier review on the plasma arc synthesis of various nanoparticles using the configuration in Figure 5 a was published by Seo and Hong [ 47 ].…”

Section: Plasma Methods For Synthesizing Zno Nanoparticlesmentioning

confidence: 99%

Recent Advances in the Plasma-Assisted Synthesis of Zinc Oxide Nanoparticles

et al. 2021

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An overview of recent work on the low-temperature plasma-assisted synthesis of zinc oxide (ZnO) nanoparticles is presented and interpreted in terms of gas-phase and surface reactions with illustrated examples. The thermodynamical nonequilibrium conditions allow the formation of chemically reactive species with a potential energy of several eV, which readily interact with the Zn precursors and initiate reactions leading to the formation of nanoparticles or nanowires. The high-quality nanowires were synthesized from Zn powders only upon interaction with moderately ionized plasma in a narrow range of plasma parameters. This technique is promising for the synthesis of large quantities of nanowires with aspect ratios well above 10, but the exact range of parameters remains to be determined. Apart from the ex situ techniques, the ZnO nanoparticles can be synthesized by depositing a film of precursors (often Zn salts or Zn-containing organometallic compounds) and exposing them to oxygen plasma. This technique is useful for the synthesis of well-adherent ZnO nanoparticles on heat-sensitive objects but requires further scientific validation as it often leads to the formation of a semicontinuous ZnO film rather than nanoparticles. Both low-pressure and atmospheric plasmas are useful in converting the precursor film into ZnO nanoparticles despite completely different mechanisms.

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Section: Plasma Methods For Synthesizing Zno Nanoparticlesmentioning

confidence: 99%

Recent Advances in the Plasma-Assisted Synthesis of Zinc Oxide Nanoparticles

et al. 2021

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“…Particles and carrier gas are delivered into the radical direction, 4 mm away from the center line and 1 mm under the nozzle exit. Here, the thermal plasma jet is established with a non-transferred DC torch [ 33 ].…”

Section: Modeling Approachmentioning

confidence: 99%

Modeling of Advanced Silicon Nanomaterial Synthesis Approach: From Reactive Thermal Plasma Jet to Nanosized Particles

et al. 2022

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A three-dimensional numerical modelling of a time-dependent, turbulent thermal plasma jet was developed to synthetize silicon nanopowder. Computational fluid dynamics and particle models were employed via COMSOL Multiphysics® v. 5.4 (COMSOL AB, Stockholm, Sweden) to simulate fluid and particle motion in the plasma jet, as well as the heat dependency. Plasma flow and particle interactions were exemplified in terms of momentum, energy, and turbulence flow. The transport of nanoparticles through convection, diffusion, and thermophoresis were also considered. The trajectories and heat transfer of both plasma jet fields, and particles are represented. The swirling flow controls the plasma jet and highly affects the dispersion of the nanoparticles. We demonstrate a decrease in both particles’ velocity and temperature distribution at a higher carrier gas injection velocity. The increase in the particle size and number affects the momentum transfer, turbulence modulation, and energy of particles, and also reduces plasma jet parameters. On the other hand, the upstream flame significantly impacts the particle’s behavior under velocity and heat transfer variation. Our findings open the door for examining thermal plasma impact in nanoparticle synthesis, where it plays a major role in optimizing the growth parameters, ensuring high quality with a low-cost technique.

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“…Metal oxides have been of great and remarkable interest in many scientific fields because of their unique properties. Among these, zinc oxide (ZnO) is considered the most important due to its high thermal stability, higher band gap of 3.3 eV, and high transparency, 1,2 which makes ZnO a promising material in the fields of optoelectronics, catalysts, gas sensors, thin film based electro-optic and electronic devices, solar cells, and antibacterial agents, although the remarkable properties of ZnO show some limitation for longer use. For a decade, researchers have focused on the stochiometrically pure hexagonal phase of ZnO nanoparticles with a higher band-gap.…”

Section: Introductionmentioning

confidence: 99%