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

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 16期

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.

引用

页码：5985 / 5991

页数：7

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