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Vol. 135, Issue 12, December 2011, pp.110-117




Chemically Synthesized Sn Doped Polyaniline Hydrochloride for Carbon Dioxide Gas Sensing



Department of Physics, Sant Gadge Baba Amravati University,

Amravati 444 602, India

Tel.: +91 9049679229

E- mail: krnemade@gmail.com



Received: 30 August 2011   /Accepted: 16 December 2011   /Published: 28 December 2011

Handbook of Laboaratory Measurements book


Abstract: The polyaniline (PANi) has been subject of many studies due to their case of synthesis, environmental stability and simple doping /dedoping chemistry. Sn doped PANI hydrochloride was synthesized using the monomer of aniline hydrochloride and insitu varying concentration of SnCl4 by chemically oxidative polymerisation in presence of oxidant ammonium peroxidase. Four samples were prepared by varying the concentration of SnCl4 from 0.01-0.04 M. The sensors of each sample were prepared using screen-printing on glass substrate. The sensors were investigated for CO2 gas sensing at different concentration (ppm) at room temperature (313 K) and compare sensing response with pure PANI hydrochloride. The sensing response (sensitivity) of sensors was found to be improved with the concentration of SnCl4. It is higher for 0.04 M concentration of Sn doped PANI hydrochloride film. Material was characterized by XRD and FTIR.


Keywords: PANI hydrochloride, Sensitivity, CO2


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