Synthesis of Silicon Nanotubes on Porous Alumina Using Molecular Beam Epitaxy

Jeong, Se Young; Kim, Jae Yon; Yang, Hyun Duk; Yoon, Bin Nal; Choi, Suk-Ho; Kang, Hyung Koo; Yang, Cheol Woong; Lee, Young Hee

doi:10.1002/adma.200304898

Cited by 169 publications

(93 citation statements)

References 19 publications

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“…At full coverage with zigzag configuration, the band gap (3.8 eV) is much more than that in arch-type (0.7 eV). A band gap of 1.0 eV for full hydrogenated (5,5) tube is known to be underestimated in LDA calculation [21]. In the arch and zigzag-type, Lee et al clearly observed the band gaps of 1.63 eV and 2.63 eV, respectively [14].…”

Section: Electronic Structuresmentioning

confidence: 95%

The effect of atomic hydrogen adsorption on single-walled carbon nanotubes properties

Jalili

Majidi

2007

JICS

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We investigated the adsorption of hydrogen atoms on metallic single-walled carbon nanotubes using ab initio molecular dynamics method. It was found that the geometric structures and the electronic properties of hydrogenated SWNTs can be strongly changed by varying hydrogen coverage. The circular cross sections of the CNTs were changed with different hydrogen coverage. When hydrogen is chemisorbed on the surface of the carbon nanotube, the energy gap will be appeared. This is due to the degree of the sp 3 hybridization, and the hydrogen coverage can control the band gap of the carbon nanotube.

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Section: Electronic Structuresmentioning

confidence: 95%

The effect of atomic hydrogen adsorption on single-walled carbon nanotubes properties

Jalili

Majidi

2007

JICS

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“…Further more, the poor p-p overlapping for Si, Si-Si = 2.16Å with bond energies equal 327Kj/mol are much weaker than the carbon-carbon bonds (1.34Å) with bond energies equal 602Kj/mol 34 …”

Section: Introductionmentioning

confidence: 94%

“…One of the main factors that impact the chemicals and physicals proper ties of Si in comparison with those of carbons are the larger atomic sizes of Si that has longer Si-Si =2.35Å bonds 34 in size and weaker bonds with the bond energies of 222,Kj/mol, comparing to carbon-carbon bonds equal 1.54Å including bond energy= 345.6Kj/mol 33 .…”

Section: Introductionmentioning

confidence: 99%

“…In the cases of Nano-tubes contrasting with the CNTs, the analogous Si-NTs based on rolled up graphene like sheet seems to be relatively not easily synthesized 34 , but its existence on a basis of various experimental or theoretical investigation has been reported.…”

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confidence: 99%

“…Moreover to this, Yang has been reported a novel synthesis of the large diameters around e"50 nm Si-NTs using the chemical vapour deposition methods while using the transmission-electronmicroscopy or TEM techniques 33 in 2002. After that, Lee 35 published a paper related on the growth of pure silicon Nano -tubes using molecular beam epitaxial 35 on the porous alumina without any catalysts 34 . Tang published two works which has been reported the growth of silicon Nano-tubes including a smaller diameter around 13 nm using silicon oxide via hydrothermal synthesis 35,36 .…”

mentioning

confidence: 99%

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Neutral Gases Adsorption With Hydrogen on Silicon Nanotubes: A Fuel Cell Invistegation

Chitsazan¹,

Monajjemi²,

Aghaei³

et al. 2017

Orient. J. Chem

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In the present study, adsorption of helium, neon, argon and binary mixtures of one of them with hydrogen on (5, 5) armchair silicon nanotube at Temperatures of 50, 100 and 150K and Pressures of 1, 5, 7, 10 and 15MPa were studied. For each binary mixture three different mole fractions of hydrogen were examined. Canonical Monte Carlo simulation by ab-initio calculation was employed for studding the adsorption of above gases on single-walled silicon nanotubes (SW-Si-NTs). The interaction energy of gases with the surfaces of the single Si-NTs obtained from quantum mechanics calculations was fitted to an exact potential functions used for simulating the system. Lennard-Jones potential was used for gas-gas and Morse potential was used for gas-silicon nanotubes interaction. The work was carried out at several temperatures and pressures by using Canonical-Monte-Carlo or CMC simulation in order for studding the effect of temperature and pressure on gas adsorption. The adsorption results showed that by increasing the pressure and decreasing the temperature, the amount of adsorption increases. It was concluded that among the rare gases discussed helium was lowest impact on hydrogen adsorption in a mixture of helium and hydrogen.

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Inorganic Nanotubes

Rem��kar¹

2005

Encyclopedia of Inorganic Chemistry

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The first synthetic inorganic nanotubes were reported in 1992, but owing to the simultaneous discovery of carbon nanotubes they attracted wide international attention only recently. They are distinguished by important peculiarities, from growth mechanisms to the various physical and chemical properties and possible applications. Further analogies to carbon nanotubes, fullerenes, nanobuds, and peapods are presented as the first hybrid inorganic nanotube structures, i.e., nanobuds and “mama” tubes. Their structural and morphological properties determining chemical stability and activity, transport properties, mechanics and interaction with other building blocks in composites are discussed in this article.

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Synthesis of Silicon Nanotubes on Porous Alumina Using Molecular Beam Epitaxy

Cited by 169 publications

References 19 publications

The effect of atomic hydrogen adsorption on single-walled carbon nanotubes properties

The effect of atomic hydrogen adsorption on single-walled carbon nanotubes properties

Neutral Gases Adsorption With Hydrogen on Silicon Nanotubes: A Fuel Cell Invistegation

Inorganic Nanotubes

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