| 等离子体辅助法合成α-Si3N4/SiO2纳米梳 |
| Plasma-Assisted Synthesis of α-Si3N4/SiO2 Core-Shell Nanocombs |
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| 摘要: 晶体的α-Si3N4内核和非晶的SiO2外壳组成的纳米梳通过简单的直流电弧方法合成。通过X射线衍射（XRD）、扫描电子显微术（SEM）、透射电子显微术（TEM）、傅里叶红外光谱（FTIR）等对纳米梳进行表征。纳米梳的光致发光谱展现了两个强的发光峰，分别在450和511 nm。α-Si3N4/SiO2核壳结构纳米梳生长机制为等离子体辅助气-固生长机制。 |
| 关键词: 纳米结构 氮化物 电弧放电 光致发光 |
| 基金项目: 国家自然科学基金（No.11304020）；辽宁省教育厅科学技术研究项目（No.L2013427）资助。 |
| Abstract: Nanocombs composed of crystalline α-Si3N4 inner core and amorphous SiO2 outer shell were synthesized by a simple one-step method of direct current arc discharge without the addition of any catalysts or templates. The morphology and structure of the nanocombs were characterized by XRD, SEM, EDS, TEM and FTIR. The photoluminescence (PL) spectrum of the nanocombs shows two strong emission peaks at about 450 nm and 511 nm. The growth mechanism of the α-Si3N4/SiO core-shell nanocombs can be considered as plasma-assisted vapor-solid mechanism. |
| Keywords: nanostructure nitrides arc discharges photoluminescence |
| 投稿时间：2014-03-27 修订日期：2014-06-30 |
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| 王秋实,张伟,张丽娜,吕航,陆晓东,吴志颖.等离子体辅助法合成α-Si3N4/SiO2纳米梳[J].无机化学学报,2014,30(10):2447-2452. |
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