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Ultra-long Sialon nanobelts: large-scale synthesis via a pressure enhanced CVD process and photoluminescence characteristics
被引:26
|作者:
Qin, Chunlin
[1
,2
]
Wen, Guangwu
[1
,2
]
Wang, Xinyu
[1
]
Song, Liang
[1
]
Huang, Xiaoxiao
[2
]
机构:
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Weihai 264209, Peoples R China
基金:
中国国家自然科学基金;
关键词:
BETA-SIALONS;
CERAMICS;
D O I:
10.1039/c0jm04247a
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Large quantities of core-shell structured Sialon nanobelts containing amorphous carbon in the shell were synthesized by pressure enhanced CVD at 1450 degrees C without a catalyst. The products are high-quality nano single-crystalline with a uniform morphology. The yield and aspect ratio are systematically controlled by changing the growth temperature and chamber pressure. The nanostructures were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), nitrogen adsorption-desorption isotherms and high-resolution transmission electron microscopy (HRTEM). A stepwise reaction model and luminescence characteristics were proposed based on the experimental results.
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页码:5985 / 5991
页数:7
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