Large-scale synthesis and photoluminescence properties of hexagonal-shaped SiC nanowires

Wei, Jian; Li, Kezhi; Li, Hejun; Hou, Dang-She; Zhang, Yulei; Wang, Chuang

doi:10.1016/j.jallcom.2007.08.014

Cited by 31 publications

(19 citation statements)

References 21 publications

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“…SiCNWs [38,[238][239]. Some synthesized SiC nanostructures showed emission in the blue-to-UV range with their properties depending sensitively on the fabrication method and even on Compared with the previous reports, the synthesized nanowires exhibit two larger blue shifts in the photoluminescence (PL) spectrum.…”

Section: A N U S C R I P Tmentioning

confidence: 88%

“…A C C E P T E D There were several reports on large scale synthesis of 1D SiC materials by reacting silicon/silica with carbon source having high surface area such as activated carbon [37][38]. Wang et al [150] synthesized SiCNWs by heating a mixture of SiO powder and arc-discharge plasma pretreated carbon black with porous and loose structures in a high frequency induction furnace.…”

Section: Bulk Production Of 1d Silicon Carbide Nanomaterials: Currentmentioning

confidence: 99%

“…The carbothermal reduction of silica [25][26][27] and hydrogen reduction of methyltrichlorosilane [28][29][30][31] are the two most widely used methods. The bulk production of 1D SiC nanostructures is a challenging issue which is currently being undertaken by different research groups [32][33][34][35][36][37][38]. Bulk production of 1D SiC nanostructures using carbothermal reduction of silica has been studied in detail.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Chemistry of one dimensional silicon carbide materials: Principle, production, application and future prospects

Prakash

Venugopalan

Tripathi

et al. 2015

Progress in Solid State Chemistry

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Section: A N U S C R I P Tmentioning

confidence: 88%

Section: Bulk Production Of 1d Silicon Carbide Nanomaterials: Currentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chemistry of one dimensional silicon carbide materials: Principle, production, application and future prospects

Prakash

Venugopalan

Tripathi

et al. 2015

Progress in Solid State Chemistry

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“…have a larger energy band gap than their bulk ones, [21][22][23][24][25][26][27][28][29][30][31][32] and most of these nanostructures have a strong light emission in ultraviolet regions. Therefore, it is very interesting and challenging to explore the PL properties of SiC:Tb nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, microstructure, and photoluminescence properties of thornlike SiC:Tb nanostructures

Zhou

Song

et al. 2010

J. Mater. Res.

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Thornlike Tb-doped SiC (SiC:Tb) nanostructures were synthesized through a carbothermal reduction of electrospun Tb-doped SiO 2 nanofibers (SiO 2 :Tb). The synthesized SiC nanostructures annealed at a high temperature of 1300 C displayed a unique morphology and a high crystalline quality with the b-SiC phase. Strong green-light emissions were detected from the SiC:Tb samples. Photoluminescence excitation results show that, besides a small amount of energy coming from the SiC cores (464 nm), most of the energy needed for the excitation of Tb 3þ ions comes from the light absorption of the SiO 2 -Tb surface layers (295 nm) and near-interface regions in the samples (388 nm). Transmission electron microscopy, energy dispersive spectrometry, and Raman analyses suggested that the formations of Tb clusters and SiO 2 surface layers are very important to the enhancement of the luminescence behaviors of Tb 3þ ions. Finally, we have constructed an excitation model and further proposed an energy transfer mechanism for these thornlike SiC:Tb nanostructures.

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“…Several mechanisms for the growth of one dimensional nanostructure have been proposed such as vapor-liquid-solid (VLS) 44 , vapor-solid (VS) 45 and solid-liquid-solid (SLS) 46 mechanisms. In this study, mechanism of vapor-solid (VS) was suggested to explain the synthesis of SiCNTs from the blend of SiO 2 and MWCNTs at 1400 °C with heating rate of 30 °C/min and maintained for 40 minute.…”

Section: Growth Mechanism Of Silicon Carbide Nanotubes (Sicnts)mentioning

confidence: 99%

Effective Synthesis of Silicon Carbide Nanotubes by Microwave Heating of Blended Silicon Dioxide and Multi-Walled Carbon Nanotube

et al. 2017

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Silicon carbide nanotube (SiCNTs) has been proven as a suitable material for wide applications in high power, elevated temperature and harsh environment. For the first time, we reported in this article an effective synthesis of SiCNTs by microwave heating of SiO 2 and MWCNTs in molar ratio of 1:1, 1:3, 1:5 and 1:7. Blend of SiO 2 and MWCNTs in the molar ratio of 1:3 was proven to be the most suitable for the high yield synthesis of β-SiCNTs as confirmed by X-ray diffraction pattern. Only SiCNTs were observed from the blend of MWCNTs and SiO 2 in the molar ratio of 1:3 from field emission scanning electron microscopy imaging. High magnification transmission electron microscopy showed that tubular structure of MWCNT was preserved with the inter-planar spacing of 0.25 nm. Absorption bands of Si-C bond were detected at 803 cm -1 in Fourier transform infrared spectrum. Thermal gravimetric analysis revealed that SiCNTs from ratio of 1:3 showed the lowest weight loss. Thus, our synthetic process indicates high yield conversion of SiO 2 and MWCNTs to SiCNTs was achieved for blend of SiO 2 and MWCNTs in molar ratio of 1:3.

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Large-scale synthesis and photoluminescence properties of hexagonal-shaped SiC nanowires

Cited by 31 publications

References 21 publications

Chemistry of one dimensional silicon carbide materials: Principle, production, application and future prospects

Chemistry of one dimensional silicon carbide materials: Principle, production, application and future prospects

Synthesis, microstructure, and photoluminescence properties of thornlike SiC:Tb nanostructures

Effective Synthesis of Silicon Carbide Nanotubes by Microwave Heating of Blended Silicon Dioxide and Multi-Walled Carbon Nanotube

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