Improved and excellent ethanol sensing properties of SnOe/multiwalled carbon nanotubes

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 关键词: 多壁碳纳米管 气敏性能 乙醇 斯诺 MWNTs 气敏材料 响应时间 信号传输
• 年，卷（期）: 2010,（4）
• 所属期刊栏目: ARTICLES
• 页码范围: 382-385
• 页数: 4页
• 分类号: TN304.21 TB383
• 语种: 英文

摘要

SnO2/multiwalled carbon nanotubes (MWNTs) have been studied as gas sensing materials. Compared with pure SnO2, SnO2/MWNTs exhibit improved ethanol sensing properties such as higher sensitivity and quicker response/recovery at 300℃. The sensitivity is 35, 65, 166 and 243 to 500, 1000, 2000 and 3000 ppm ethanol, respectively. The response time is about 1 s, and the recovery time is about 5 s. The sensing improvement is explained in terms of the appropriate basal resistance and enhanced signal transfer brought by MWNTs.