物理化学学报 >> 2006, Vol. 22 >> Issue (01): 110-113.doi: 10.3866/PKU.WHXB20060122

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硼酸镁纳米带的制备、结构和生长机理

张弜; 赵彦明   

  1. 华南理工大学物理科学与技术学院, 广州 510640
  • 收稿日期:2005-05-24 修回日期:2005-08-20 发布日期:2006-01-15
  • 通讯作者: 张弜 E-mail:jonney@scut.edu.cn

Synthesis, Structure and Growth Mechanism of Magnesium Borate Nanobelts

ZHANG Jiang; ZHAO Yan-ming   

  1. School of Physics Science and Technology, South China University of Technology, Guangzhou 510640, P. R. China
  • Received:2005-05-24 Revised:2005-08-20 Published:2006-01-15
  • Contact: ZHANG Jiang E-mail:jonney@scut.edu.cn

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摘要： 以晶态B和纳米MgO粉末为原料, 在1100 ℃含水的气氛下反应制备了新型准一维纳米材料硼酸镁纳米带. 采用多种表征方法, 如X射线衍射(XRD), 扫描电镜(SEM), 透射电镜(TEM), 能量色散谱仪(EDS)和傅立叶红外(FT-IR)等, 研究了产物的形貌和结构. 结果表明, 除了部分附着的Mg2B2O5颗粒外, 产物主要为单晶的Mg3B2O6纳米带. 其宽度在100～200 nm, 长度达到几十微米, 生长方向大致为[010]方向. 简要讨论了硼酸镁纳米带的生长机理和反应温度对产物的影响.

关键词: 硼酸镁, 单晶, 纳米带, 生长机理

Abstract: Magnesium borate nanobelts, a new kind of quasi one-dimensional nanomaterials, has been synthesized by heating mixed powders of crystalline boron and MgO nanoparticles in the presence of H2O at 1100 ℃. The produced white sample was characterized by different techniques, such as the X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FT-IR). The results show that the products are single-crystalline Mg3B2O6Mg3B2O6 nanobelts except some attached Mg2B2O5 particles. The widths of the nanobelts are in the range of 100～200 nm and the lengths are up to several ten micrometers. The growth direction of the nanobelts nears to crystalline Mg3B2O6[010] direction. Finally, the growth mechanism for these novel Mg3B2O6 nanobelts and the effect of reactive temperature on the products have been primarily presented.

Key words: Magnesium borate, Single-crystalline, Nanobelts, Growth mechanism