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Silicon carbide nanotubes with special morphology prepared by super critical hydrothermal method and photoluminescence character |
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| Authors: | Chi Guo Yuan-hong Tang Li-zhai Pei and Yong Zhagn |
| Institution: | (1) Department of Chemistry and Institute of Applied Chemistry, Chinese Culture, University, Taipei, 111, Taiwan, ROC;(2) Department of Mechanical and Electro-Mechanical Engineering, Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan, ROC;(3) Department of Mechanical Engineering, National United University, Miao-Li, 36003, Taiwan, ROC;(4) State Key Laboratory of Materials Modification by Laser, Electron, and Ion Beam, School of Physics and Optoelectronic Technology and College of Advanced Science and Technology, Dalian University of Technology, Dalian, 116024, China;(5) National Center for High-Performance Computing, No. 28, Nan-Ke Third Road, Hsin-Shi, Tainan, 74147, Taiwan, ROC; |
| Abstract: | Silicon carbide nanotubes (SiCNTs) with special morphology synthesized by supercritical hydrothermal method at 470 °C and 8 MPa have been reported in this paper. SiCNTs with special morphology were characterized by transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). There are two kinds of silicon carbide with special morphology: One is oval SiCNTs with small aspect ratio, the other is bamboo cone-shape structure. SiCNTs have been analyzed by fluorescence spectrometer. The results indicate that the SiCNTs have strong photoluminescence (PL) property. The SiCNTs with oval shape are one kind of intermediate state of growth process of nanotube. The growth mechanism of silicon nanotubes has been proposed based on experiment data. The investigations of growth mechanism of SiCNTs with bamboo structure show that the defect produced in the growth process play the important role in SiCNTs with special structure. |
| Keywords: | silicon carbide nanotubes(SiCNTs) supercritical hydrothermal method photoluminescence(PL) |
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