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›› 2014, Vol. 14 ›› Issue (6): 1058-1062.

• 材料工程专栏 • 上一篇    下一篇

片状花形ZnO制备及其对三甲胺的气敏性能

宋金玲 任文强 张胤   

  1. 内蒙古科技大学稀土学院 内蒙古科技大学材料与冶金学院 内蒙古科技大学材料与冶金学院
  • 收稿日期:2014-12-26 修回日期:1900-01-01 出版日期:2014-12-20 发布日期:2014-12-20
  • 通讯作者: 宋金玲

Synthesis of Sheet-assembled Flower-like ZnO and Its Gas Sensing Properties to Trimethylamine

SONG Jin-ling REN Wen-qiang ZHANG Yin   

  1. School of Rare Earth, Inner Mongolia University of Science and Technology School of Material and Metallurgy, Inner Mongolia University of Science and Technology Material and Metallurgical School, Inner Mongolia University of Science & Technology
  • Received:2014-12-26 Revised:1900-01-01 Online:2014-12-20 Published:2014-12-20
  • Contact: SONG Jin-ling

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摘要： 采用低温水热法制备了ZnO材料，通过X射线衍射仪和扫描电镜分别对其结构和形貌进行了表征，并采用气敏测试仪对所制ZnO材料对三甲胺的气敏性进行了测试. 结果表明，所得的ZnO材料具有六方纤锌矿结构，呈片状花形. 此材料在340℃，对体积分数为1.00′10?4三甲胺气体的灵敏度可达到63.72. 随着三甲胺浓度的增加，灵敏度呈现线性增加的趋势. 响应时间和恢复时间分别为4 s和21 s. 此外，该样品具有呈现良好的选择性、重复性和长期稳定性.

关键词: ZnO, 三甲胺, 水热法, 气敏性能

Abstract: The ZnO material was prepared by low temperature hydrothermal method. The structure and morphology were characterized by XRD and SEM. And the trimethylamine-sensing properties of prepared ZnO were measured by the gas sensing instrument. The results show that the prepared ZnO material exhibits hexagonal wurtzite structure and sheet-assembled flower-like morphology. Moreover, its sensitivity can reach 63.72 towards 1.00×10?4 trimethylamine at 340℃. The sensitivity increases linearly with increasing of the trimethylamine concentration. The response time and recovery time are 4 s and 21 s, respectively. In addition, the material shows excellent selectivity, repetition property and long-term stability.

Key words: ZnO, trimethylamine, hydrothermal method, gas sensing property

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