研究论文

AlB12纳米棒的制备与表征

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  • (1. 信阳师范学院, 信阳 464000; 2. 华南理工大学, 广州 510640)

收稿日期: 2009-12-09

  修回日期: 2010-02-16

  网络出版日期: 2010-07-19

基金资助

国家自然科学基金(50972046); 河南省科技厅科技计划项目(082300410050, 092300410209, 09300410207); 河南省教育厅自然科学研究资助计划项目(2010A140015); 信阳师范学院青年骨干教师资助计划项目

Synthesis and Characterization of AlB12 Nanorods

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  • (1. Xinyang Normal University, Xinyang 464000, China; 2. South China University of Technology, Guangzhou 510640, China)

Received date: 2009-12-09

  Revised date: 2010-02-16

  Online published: 2010-07-19

摘要

以铝(Al)粉末和三氯化硼(BCl3)为前驱体, 以H2和Ar分别作为还原气体和保护气体, 在高温水平电炉中采用化学气相沉积方法在Si衬底上原位制备了大量的AlB12纳米棒. 利用扫描电镜(SEM), 高分辨透射电镜(HRTEM), 选区电子衍射(SAED), 能谱(EDS)表征了AlB12纳米棒的形貌、晶体结构和成份. SEM结果表明纳米棒的直径在100~350 nm之间, 长度从几百个纳米到几个微米, TEM、SAED和EDS结果显示AlB12纳米棒沿着[020]方向生长. 最后根据纳米线生长过程探讨了AlB12纳米棒的自催化生长机理.

本文引用格式

许军旗, 王艳蕊, 赵彦明, 余本海, 罗永松, 孙海斌 . AlB12纳米棒的制备与表征[J]. 无机材料学报, 2010 , 25(8) : 857 -859 . DOI: 10.3724/SP.J.1077.2010.00857

Abstract

Chemical vapor deposition (CVD) method was utilized to synthesize single-crystal AlB12 nanorods on Si substrates in the high temperature horizontal furnace under H2 and Ar atmosphere, using Al powders and BCl3 gas as precursors without any catalysts. The morphology, crystal structures and components of the AlB12 were examined by scanning electron microscope (SEM), high-resolution transmission electron microscope (HRTEM), selected-area electron diffraction(SAED) and energy disperse spectrometer (EDS). SEM shows that the as-synthesized nanowires with the diameter ranging from 100nm to 350 nm and length ranging from several nanometers to several micrometers. HRTEM, SAED, and EDS reveal that the AlB12 nanorods are crystals elongated along the [020] direction. And growth mechanism based on the self-catalyst process is proposed for the formation of the AlB12 nanorods.

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