Detection of methane using multi-walled carbon nanotubes

Bulletin of Materials Science

关键词: Multi-walled carbon nanotubes;    chemoresistive;    methane sensor;    ink-jet printing.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A sensor for detecting and estimating methane using multi-walled carbon nanotubes (MWCNTs) as the sensing element has been developed for the first time. Silver electrodes have been ink-jet printed on glass substrate over which MWCNT is brush coated to fabricate the sensor element which is of chemoresistive type. The sensitivity of the sensor (increase in the resistance of the sensor on exposure to analyte) increases linearly with concentration of methane and a maximum sensitivity of about 20% has been observed for 160 ppm of methane. A prototype device has been fabricated with this sensor and tested for its performance. It could be used to detect methane on site.

【 授权许可】

CC BY