高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (4): 607.

• 研究简报 • 上一篇    下一篇

热解法制备纳米SnO2及其气敏性能研究

石娟1,2, 吴世华1, 张守民1, 黄唯平1, 王淑荣1   

  1. 1. 南开大学化学系, 天津 300071;
    2. 天津工业大学材料化工学院, 天津 300160
  • 收稿日期:2003-07-08 出版日期:2004-04-24 发布日期:2004-04-24
  • 通讯作者: 吴世华(1945年出生),男,教授,从事无机合成与材料、催化等方面的研究.E-mail:wushihuae@eyou.com E-mail:wushihuae@eyou.com

Synthesis of Nano-SnO2 Through Pyrolysis Method and Its Gas Sensitivity Property

SHI Juan1,2, WU Shi-Hua1, ZHANG Shou-Min1, HUANG Wei-Ping1, WANG Shu-Rong1   

  1. 1. Department of Chemistry, Nankai University, Tianjin 300071, China;
    2. Institute of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
  • Received:2003-07-08 Online:2004-04-24 Published:2004-04-24

PDF (PC)

关键词: 纳米SnO2, 热解法, 红外光谱, 传感器, 气敏性能

Abstract: Nanosized SnO2 powders were synthesized by using the direct pyrolysis means from SnC2O4 .The specimens were characterized by TEM, XRD, TG-DTA, FTIR and BET. TEM and XRD showed that the SnO2 crystallines were less than 8 nm in diameter together with a narrow particle size distribution. BET showed that the surface area of SnO2 was 115.2 m2/g. FTIR spectra revealed that the absorptions of Sn—O and —OH bonds in SnO2 ultrafine powders were red-shifted and broadened. According to the curve of TG-DTA, SnC2O4 transformed into SnO2 completely after being calcined at 250 ℃. Further gas sensing experiments testified that the response and recovery times to C2H5OH were shorter than those obtained by the conventional precipitation method.

Key words: Nano-SnO2, Pyrolysis, FTIR, Sensor, Gas sensitivity property

中图分类号: 

TrendMD: