Selective sensing of hydrogen sulphide using silver nanoparticle decorated carbon nanotubes
Fam, Derrick Wen Hui
Tok, Alfred Iing Yoong
Mhaisalkar, Subodh Gautam
Date of Issue2009
School of Materials Science and Engineering
This paper reports a selective method of sensing hydrogen sulphide in gaseous state using silver nanoparticle decorated single-walled carbon nanotubes (SWCNT) at room temperature. The transduction platform is a simple resistor which was constructed by drop-casting of a random network of silver nanoparticle decorated carbon nanotubes onto a channel joining two electrodes. This study shows the differential sensing of hydrogen sulphide with respect to interfering analytes such as carbon monoxide and nitric oxide, displaying the different mechanisms involved in the sensing of the gases. These results indicate the possibility of fabricating simple devices with low power consumption based on flexible plastic substrate for selective sensing of gaseous molecules at room temperature by appropriately functionalizing the carbon nanotubes (CNTs).
Sensors and actuators B : chemical
© 2009 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Sensors and Actuators B: Chemical, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.snb.2009.01.008].