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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

纳米ZnO的固相合成及其气敏特性

沈茹娟1; 贾殿赠1; 乔永民1; 王疆瑛2   

  1. 1. 新疆大学应化所, 乌鲁木齐 830046; 2. 中国科学院新疆物理所, 乌鲁木齐 830042
  • 收稿日期:2000-07-20 修回日期:2000-10-09 出版日期:2001-07-20 网络出版日期:2001-07-20

Solid State Synthesis and Gas Sensing Properties of Nanometer ZnO

SHEN Ru-Juan1; JIA Dian-Zeng1; QIAO Yong-Min1; WANG Jiang-Ying 2   

  1. 1. Institute of Applied Chemistry; Xinjiang Univ.; Wulumuqi 830046; China; 2. Xinjiang Institute of Physics; Chinese Academy of Sciences; Wulumuqi 830042; China
  • Received:2000-07-20 Revised:2000-10-09 Published:2001-07-20 Online:2001-07-20

PDF (PC)

1057

被引次数

156

摘要： 以草酸为原料，与醋酸锌进行固相反应制得前驱化合物，进而热分解得到气敏材料氧化锌。将稀土元素中的镧和钕的氧化物以固相及液相两种合成方法添加到ＺｎＯ气敏材料中，并对材料的粒径、气敏性质进行了测定和表征．实验结果表明，用这种方法制备的氧化锌在低的工作温度下对乙醇气体的灵敏度较高，而且选择性较好，具有一定的应用前景．

关键词: 纳米, ZnO, 固相合成, 气敏特性

Abstract: Precursors were synthesized by solid state reaction of zinc acetate with oxalic acid. ZnO gas sensing materials were obtained by decomposition of the precursors and characterized
by XRD and TEM. La2O3 and Nd2O3 were doped in nanometre ZnO materials by the methods of solid state and liquid state reaction. The sensitivity
of the materials was measured at various mole ratios of ZnO to La2O3 or Nd2O3. The gas sensitivity of ZnO element to C2H5OH,
NH3 and LPG were measured in static state at a various operational temperatures. The results show that ZnO prepared by this method is highly sensitive to
C2H5OH and selective between C2H5OH, NH3 and LPG at a low operational temperature.

Key words: nanometer, zinc oxide, solid sate synthesis, gas sensing properties

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