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无机材料学报

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SnO2纳米棒的制备及表征

侯德东1; 刘应开2   

  1. 1. 云南师范大学, 昆明 650092; 2. 南京大学物理系, 南京 210093
  • 收稿日期:2001-09-21 修回日期:2001-11-20 出版日期:2002-07-20 网络出版日期:2002-07-20

Synthesis and Characterization of SnO2 Nanorods

HOU De-Dong1; LIU Ying-Kai2   

  1. 1. Yunnan Normal University; Kunming 650092; China; 2. Department of Physics; Nanjing University; Nanjing 210093; China
  • Received:2001-09-21 Revised:2001-11-20 Published:2002-07-20 Online:2002-07-20

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摘要： 在聚氧乙烯五醚（NP5）,聚氧乙烯九醚（NP9）,乳化剂（OP）和环己烷组成的微乳体系中制备二氧化锡前驱物.然后再经800～820℃焙烧2.5h,成功地制备了直径为30～90nm,长5～10μm的金红石结构的二氧化锡纳米棒,并用透射电子显微镜,电子衍射,X射线衍射对二氧化锡纳米棒的结构进行了表征.用熔盐合成机理对其形成进行了讨论,初步认为是成核、长大过程形成了二氧化锡纳米棒.

关键词: SnO2纳米棒, 微乳, 熔盐合成, 成核、长大过程

Abstract: SnO2 nanorods with the rutile structure were prepared by annealing precursor powders?， which were produced by mixing three kinds of microemulsions (NP5，NP9, OP and
cyclohexane with the volume ratio 1:1:1:2) in the presence of salts such as SnCl4，Na2CO3, NaCl respectively. The structure and morphology of SnO2 nanorods
were investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction. The results showed that the diameter
and length of the as-prepared nanorods were 30～90nm and several micrometers respectively. The nanorods were perfect crystals. The mechanism of the formation
of SnO2 nanorod was simply discussed in terms of the nucleation and growth process.

Key words: SnO2 nanorods, microemulsion, molten salt synthesis method, nucleation and growth process

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