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CaCO3纳米线的制备及表征

韩志华, 曹林   

  1. 北京科技大学材料物理与化学系, 北京 100083
  • 收稿日期:2004-10-25 修回日期:2004-12-27 出版日期:2005-11-20 网络出版日期:2005-11-20

Preparation and Characterization of CaCO3 Nanowires

HAN Zhi-Hua; CAO Lin   

  1. Department of Materials Physics and Chemistry; University of Science and Technology Beijing; Bejing 100083, China
  • Received:2004-10-25 Revised:2004-12-27 Published:2005-11-20 Online:2005-11-20

摘要: 以碳酸钙(CaCO3)为原料利用溶胶-凝胶法与热分解法合成了CaCO3纳米线,纳米线的制备分为两个步骤,首先利用溶胶-凝胶法合成线状含Ca中间体,这种含Ca中间体是一维线状纳米结构;然后通过含Ca中间体热分解制得CaCO3纳米线,直径为50-80nm,长度达5μm以上,所得CaCO3纳米线为三方晶系,由纳米晶粒组装而成.

关键词: CaCO3, 纳米线, 溶胶-凝胶法, 热分解

Abstract: CaCO3 nanowires were synthesized from CaCO3 reagent by sol-gel process and thermal decomposition. The preparation of CaCO3 included two steps: In the first step, the wirelike intermediates containing Ca were synthesized by sol-gel process, which are with one dimension wire-like nanostructures; in the second step, the resulting samples were converted into CaCO3 nanowires by thermal decomposition. The diameter and length of the obtained nanowires are 50-80nm and up to 5μm separately. The nanowires are constited of self-assembled nanoparticles and they belong to the trigonal system.

Key words: CaCO3, nanowire, sol-gel process, thermal decomposition

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