| 光谱学与光谱分析 |
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| Studies on Nano-Diamond Prepared by Explosive Detonation by Raman and Infrared Spectroscopy |
| WEN Chao1，2, JIN Zhi-hao1, LIU Xiao-xin2,LI Xun2, GUAN Jin-qing2, SUN De-yu2, LIN Ying-rui2, TANG Shi-ying2, ZHOU Gang2, LIN Jun-de2 |
1. State Key Laboratory of Mechanical Behavior of Materials，Xi'an Jiaotong University, Xi'an 710049, China
2. Northwest Institute of Nuclear Technology，Xi'an 710024, China |
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Abstract Nano-diamond was synthesized by TNT/RDX explosives detonation in a steel chamber and characterized by X-ray diffraction(XRD), laser Raman spectroscopy, and infrared spectroscopy. XRD results indicate that nano-diamond has cubic diamond structure. The parameter of unit cell of nano-diamond is 0.359 23 nm and is 0.72% larger than that of the bulk diamond. The high-density defects and other impurity atoms in the nano-diamond structure may lead to the large lattice constant. The examination results of Raman spectra show that the Raman band is broader and shifts to low frequency by 3 cm-1, because the size of nano-diamond reaches nanometer order. There is little graphite in the nano-diamond. There are two peaks in FTIR of the nano-diamond, which are characteristic peaks of diamond at 1 262 and 1 134 cm-1. Besides these two peaks, there are six peaks at 3 422, 1 643, 2 971, 2 930, 2 857 and 1 788 cm-1 respectively. The FTIR bands at 2 930 and 2 857 cm-1 are the antisymmetrical and symmetrical stretch vibration absorption spectra of CH2 respectively. The 3 422 cm-1 is the stretch vibration absorption peak of O—H. The 1 634 cm-1 confirms that there are H2O in the nano-diamond. The 2 971 cm-1 is the antisymmetrical stretch vibration absorption peak of CH3. The 1 788 cm-1 is the stretch vibration absorption peak of CO. These indicate that there are H and O elements in the nano-diamond. From the mechanism of the nano-diamond, the authors discuss the reason for the vibration absorption peaks of O—H, CH2, CH3, and CO, existing in the FTIR of the nano-diamond.
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Received: 2003-07-05
Accepted: 2003-11-20
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Corresponding Authors:
WEN Chao
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| Cite this article: |
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WEN Chao,JIN Zhi-hao,LIU Xiao-xin, et al. Studies on Nano-Diamond Prepared by Explosive Detonation by Raman and Infrared Spectroscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(05): 681-684.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I05/681 |
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