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A new method for direct preparation of tin dioxide nanocomposite materials

机译:直接制备二氧化锡纳米复合材料的新方法

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摘要

In the current work, a novel combustion method is demonstrated for the direct synthesis of nanocomposite materials. Specifically doped tin dioxide (SnO_2) powders were selected for the demonstration studies due to the key role SnO_2 plays in semiconductor gas sensors and the strong sensitivity of doped SnO_2 to nanocomposite properties. The synthesis approach combines solid and gas-phase precursors to stage the decomposition and particle nucleation processes. A range of synthesis conditions and four material systems were examined in the study: gold-tin dioxide, palladium-tin dioxide, copper-tin dioxide, and aluminum-tin dioxide. Several additive precursors were considered including four metal acetates and two pure metals. The nanocomposite materials produced were examined for morphology, phase, composition, and lattice spacing using transmission and scanning electron microscopy, x-ray diffractometry, and energy-dispersive spectroscopy. The results using the combustion synthesis approach indicate good control of the nanocomposite properties, such as the average SnO_2 crystallite size, which ranged from 5.8 to 17 nm.
机译:在当前的工作中,一种新颖的燃烧方法被证明可以直接合成纳米复合材料。由于SnO_2在半导体气体传感器中的关键作用以及掺杂的SnO_2对纳米复合材料的强烈敏感性,因此选择了专门掺杂的二氧化锡(SnO_2)粉末进行演示研究。合成方法结合了固相和气相前体,以进行分解和颗粒成核过程。研究中研究了一系列合成条件和四种材料系统:金-二氧化锡,钯-二氧化锡,铜-二氧化锡和铝-二氧化锡。考虑了几种添加剂前体,包括四种金属乙酸盐和两种纯金属。使用透射电子显微镜和扫描电子显微镜,X射线衍射仪和能量色散光谱仪检查所产生的纳米复合材料的形貌,相,组成和晶格间距。使用燃烧合成方法的结果表明,可以很好地控制纳米复合材料的性能,例如平均SnO_2晶粒尺寸,范围为5.8至17 nm。

著录项

  • 来源
    《Journal of Materials Research》 |2005年第11期|p.2977-2987|共11页
  • 作者单位

    Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2125;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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