Effect of heating duration on the synthesis of silicon carbide nanotubes by microwave heating of MWCNTs and silica

In this article, the effect of heating duration on the synthesis of silicon carbide nanotubes (SiCNTs) was reported. SiCNTs were synthesized from blend of silicon dioxide (SiO2) and multi-walled carbon nanotubes (MWCNTs) in the ratio of 1:3 by using the microwave heating at 1400°C and maintained at duration of 20, 40 and 60 min, respectively. SiCNTs synthesized at heating duration of 40 and 60 min showed the presence of single phase β-SiC in X-ray diffraction patterns. Meanwhile, field emission scanning electron microscope images showed that SiCNTs were formed and no residual of SiO2 and MWCNTs was observed for SiCNTs formed at heating duration of 40 and 60 min. Transmission electron microscopy images showed the SiCNTs have inter-planar spacing of 0.263 nm and tubular structure of nanotube were retained. The peak corresponded to β-SiC was observed at wavelength of 465 nm from the photoluminescence spectroscopy and associated with energy band gap of 2.67 eV. Absorption bands of Si-C bond were detected at 806.23 cm-1 from the Fourier transform infrared spectra. High purity SiCNTs was obtained at 40 and 60 min as indicated by low weight loss by thermo-gravimetric analysis. 40 min is the most suitable heating duration for the synthesis of single phase β-SiCNTs.

[1]  W. Li,et al.  Molten salt assisted synthesis of 3C–SiC nanowire and its photoluminescence properties , 2015 .

[2]  Kun Zhou,et al.  Recent progress in synthesis, properties and potential applications of SiC nanomaterials , 2015 .

[3]  O. V. Kharissova,et al.  Variations of interlayer spacing in carbon nanotubes , 2014 .

[4]  C. Deng,et al.  Novel synthesis and characterization of silicon carbide nanowires on graphite flakes , 2014 .

[5]  A. Kingon,et al.  Studies on the thermal decomposition of multiwall carbon nanotubes under different atmospheres , 2013 .

[6]  A. Domínguez-Rodríguez,et al.  Rapid carbothermic synthesis of silicon carbide nano powders by using microwave heating , 2012 .

[7]  N. Ehsani,et al.  Synthesis and characterization of SiC nano powder with low residual carbon processed by sol–gel method , 2012 .

[8]  S. Hashimoto,et al.  Mechanism for the formation of SiC by carbothermal reduction reaction using a microwave heating technique , 2011 .

[9]  Lipeng Xin,et al.  A simple catalyst-free route for large-scale synthesis of SiC nanowires , 2011 .

[10]  A. Najafi,et al.  A study on sol–gel synthesis and characterization of SiC nano powder , 2011 .

[11]  Weihua Tang,et al.  Band gap characterization and photoluminescence properties of SiC nanowires , 2011 .

[12]  Morteza Oghbaei,et al.  Microwave versus Conventional Sintering: A Review of Fundamentals, Advantages and Applications , 2010 .

[13]  Yuan-Yao Li,et al.  SiC nanowires in large quantities: Synthesis, band gap characterization, and photoluminescence properties , 2009 .

[14]  E. Marzbanrad,et al.  Microwave hybrid synthesis of silicon carbide nanopowders , 2009 .

[15]  Jiqing Wang,et al.  Synthesis of silicon carbide nanotubes by chemical vapor deposition. , 2007, Journal of nanoscience and nanotechnology.

[16]  Paul K. Chu,et al.  Low-dimensional SiC nanostructures: Fabrication, luminescence, and electrical properties , 2006 .

[17]  R. Mokaya,et al.  High Surface Area Silicon Carbide Whiskers and Nanotubes Nanocast Using Mesoporous Silica , 2004 .

[18]  Madhu Menon,et al.  Structure and stability of SiC nanotubes , 2004 .