Nanocomposite of SWNTs and SnO2fabricated by soldering process for ammonia gas sensor application

✍ Scribed by Duc Hoa, Nguyen ;Van Quy, Nguyen ;Suk Cho, You ;Kim, Dojin

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 403 KB
• Volume: 204
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200675318

✦ Synopsis

Abstract

We introduce a simple method to fabricate an ammonia gas sensor with a nanocomposite of single‐walled carbon nanotubes (SWNTs) and SnO~2~. The nanocomposite showed a semiconducting property. With exposure to ammonia gas, the electrical resistance of the nanocomposite sensor increases rapidly. It was found that the sensor can detect the concentration of NH~3~ down to the 10 ppm level at room temperature. The sensor exhibited a fast response time of less than 100 s and good sensing response and recovery. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)