Novel synthesis of silicon carbide nanotubes by microwave heating of blended silicon dioxide and multi-walled carbon nanotubes: The effect of the heating temperature

被引:19
作者
Tony, V. C. S. [1 ]
Voon, C. H. [1 ]
Lee, C. C. [2 ]
Lim, B. Y. [3 ]
Arshad, M. K. Md. [1 ]
Gopinath, S. C. B. [1 ,4 ]
Foo, K. L. [1 ]
Ruslinda, A. R. [1 ]
Hashim, U. [1 ]
Nashaain, M. N. [5 ]
机构
[1] Univ Malaysia Perlis, Inst Nano Elect Engn, Kangar 01000, Perlis, Malaysia
[2] Univ Malaysia Perlis, Sch Mfg Engn, Arau 02600, Perlis, Malaysia
[3] Univ Malaysia Perlis, Sch Mat Engn, Arau 02600, Perlis, Malaysia
[4] Univ Malaysia Perlis, Sch Bioproc Engn, Arau 02600, Perlis, Malaysia
[5] Adv Mat Res Ctr, Kulim Hitech Pk, Kulim 09000, Kedah, Malaysia
关键词
Microwave processing; Solid state reaction; Electron microscopy; Carbide; CHEMICAL-VAPOR-DEPOSITION; BETA-SIC NANOWIRES; CARBOTHERMAL REDUCTION; SOL-GEL; LARGE-SCALE; GROWTH; CATALYST; WHISKERS; CERAMICS; TEMPLATE;
D O I
10.1016/j.ceramint.2016.08.080
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Silicon carbide nanomaterials, especially silicon carbide nanotubes (SiCNTs), are known as excellent materials for high-power and high-temperature harsh environment electronics applications because of the unique properties of SiCNTs, such as a high thermal stability, good chemical inertness and excellent electronic properties. In this article, we presented a novel synthesis of SiCNTs by microwave heating a blend of silicon dioxide (SiO2) and multi-walled carbon nanotubes (MWCNTs) at a ratio of 1:3 at temperatures of 1350 degrees C, 1400 degrees C and 1450 degrees C. The effects of different heating temperatures on the synthesis of SiCNTs were studied. X-ray diffraction revealed the presence of single phase beta-SiC for syntheses conducted at 1400 degrees C and 1450 degrees C. Meanwhile, field-emission scanning electron microscopy images showed that no residual silicon dioxide or MWCNTs was observed with syntheses conducted at 1400 degrees C and 1450 degrees C. High-magnification transmission electron microscopy revealed that the tubular structure of the MWCNTs was preserved and that SiCNTs had a lattice fringe spacing of 0.261 nm corresponding to the (111) plane of beta-SiC. Photoluminescence spectroscopy showed the presence of a beta-SiC peak at a wavelength of 465 nm, and the band gap energy of SiCNTs was 2.67 eV. Fourier transform infrared spectroscopy analysis revealed that the absorption band of the Si-C bond was detected at 803 cm(-1). The purity of SiCNTs synthesized at 1400 degrees C and 1450 degrees C is high, as indicated by the low weight loss in thermo-gravimetric analysis. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码:17642 / 17649
页数:8
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