Nanoparticle Formation Mechanism in CVD Reactor with Ionization of Source Vapor

Adachi, Motoaki; Tsukui, Shigeki; Okuyama, Kikuo

doi:10.1023/a:1024424518822

Cited by 35 publications

(15 citation statements)

References 7 publications

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“…However, at a high deposition pressure (higher than P c ), more collisions take place among the gas molecules, ions, and electrons in the plasma, which thus increase the plasma's radical density and reduce the energy of the carbon ion species. As a result, CNPs form in the dense plasma and grow as the density of the carbon radicals increases (carbon ion species), like other nanoparticles deposited via CVD processes373839. Because the energy was too low for the CNPs to penetrate the growing subsurface, the CNPs simply adhered to the growing top surface and remained in the lowest energy state of sp 2 bonding (graphite-like bonding)32, forming a porous network as nano-building blocks with the continuous aggregation of nanoparticles on the porous surface.…”

Section: Discussionmentioning

confidence: 99%

Porous Carbon Nanoparticle Networks with Tunable Absorbability

Dai

Kim

Seong

et al. 2013

Sci Rep

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Porous carbon materials with high specific surface areas and superhydrophobicity have attracted much research interest due to their potential application in the areas of water filtration, water/oil separation, and oil-spill cleanup. Most reported superhydrophobic porous carbon materials are fabricated by complex processes involving the use of catalysts and high temperatures but with low throughput. Here, we present a facile single-step method for fabricating porous carbon nanoparticle (CNP) networks with selective absorbability for water and oils via the glow discharge of hydrocarbon plasma without a catalyst at room temperature. Porous CNP networks were grown by the continuous deposition of CNPs at a relatively high deposition pressure. By varying the fluorine content, the porous CNP networks exhibited tunable repellence against liquids with various degrees of surface tension. These porous CNP networks could be applied for the separation of not only water/oil mixtures but also mixtures of liquids with different surface tension levels.

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Section: Discussionmentioning

confidence: 99%

Porous Carbon Nanoparticle Networks with Tunable Absorbability

Dai

Kim

Seong

et al. 2013

Sci Rep

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“…Charging of nanoparticles has been applied in a number of different areas, such as material synthesis, nano-structure patterning, contamination control, and particle instrumentation (e.g., Adachi, Tsukui, & Okuyama, 2003;Friedlander & Pui, 2003;Jacobs & Whitesides, 2001;Kang et al, 2004;Krinke, Fissan, Deppert, Magnusson, & Samuelson, 2001;Kulkarni, Namiki, Otani, & Biswas, 2002). A variety of aerosol charging methods have been proposed and studied for different applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of a new corona-based unipolar aerosol charger

Chen

Pui

2007

Journal of Aerosol Science

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“…A wide range of techniques including chemical vapor deposition (CVD), metalorganic chemical vapor deposition (MOCVD), thermal pyrolysis, etc. are generally used to synthesize zinc oxide (ZnO) nanoparticles and films [16][17][18]. In most of the cases, it is reported that ZnO nanostructures are resulted from epitaxial growth rather than isotropic nucleation.…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanoparticles to Nanowires and Nanobundles

Hossain

2013

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Abstract. Nanosized Zinc oxide (ZnO) possesses unique electrical, optoelectronics and photochemical characteristics and thus it is a potential candidate for different applications in next generation of optoelectronic device. In this work, a novel sol-gel route for the synthesis of ZnO nanoparticles and its transformation into wires and bundles has been reported. The process is adopted from a simple and hand-on route that also shows the power of green chemistry in nanomaterials synthesis. ZnO nanoparticles (~30 nm in diameter) were synthesized from bottom-up approach followed by a further process to obtain nanometric wires and bundles under controlled conditions. The nanowires and bundles are speculated to initiate from anisotropic agglomeration of nanometric particles and agglomeration of these nanometric wires into bundles respectively. Control of these agglomeration processes is a key challenge for application of nanowires and bundles into useful devices.

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Nanoparticle Formation Mechanism in CVD Reactor with Ionization of Source Vapor

Cited by 35 publications

References 7 publications

Porous Carbon Nanoparticle Networks with Tunable Absorbability

Porous Carbon Nanoparticle Networks with Tunable Absorbability

Experimental study of a new corona-based unipolar aerosol charger

ZnO Nanoparticles to Nanowires and Nanobundles

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