Improved Ammonia Sensing by Solution Processed Dodecyl Benzene Sulfonic Acid Doped Polyaniline Nanorod Networks

Dodecyl benzene sulphonic acid (DBSA) doped polyaniline (PANI) nanorods have been synthesized by a templateless route via in-situ emulsion polymerization of aniline in aqueous DBSA solution. XRD patterns, UV-Visible Spectroscopy, and FTIR analysis confirm the formation of PANI and PANI-DBSA, whereas...

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Bibliographic Details
Published in:IEEE access 2019, Vol.7, p.139571-139579
Main Authors: Yadav, Anju, Kumar, Jitendra, Shahabuddin, Md, Agarwal, Ajay, Saini, Parveen
Format: Article
Language:English
Subjects:
Ammonia
Ammonia gas sensor
Aniline
Benzene
Benzenesulfonic acids
Chlorine compounds
Chloroform
conducting polymer
Conductivity
Dispersion
dodecyl benzene sulfonic acid doped polyaniline
Doping
Emulsion polymerization
Gas sensors
Glass substrates
Hydrocarbons
Morphology
Nanorods
Polyanilines
Polymers
Prefabrication
Recovery time
Response time
Sensors
Sodium dodecylbenzenesulfonate
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Summary:Dodecyl benzene sulphonic acid (DBSA) doped polyaniline (PANI) nanorods have been synthesized by a templateless route via in-situ emulsion polymerization of aniline in aqueous DBSA solution. XRD patterns, UV-Visible Spectroscopy, and FTIR analysis confirm the formation of PANI and PANI-DBSA, whereas FESEM images revealed their elongated rod shaped morphology. The chloroform dispersion of synthesized PANI-DBSA was spin coated over prefabricated interdigitated Pt patterned glass substrate to realize porous gas sensing active layer. The sensor displays good response in 1-1200 ppm ammonia concentration range and can repeatedly detect 300 ppm of ammonia with response time of 6 s, recovery time of 37 s and relative response value of 9.57. Besides, its response was found to be linear for 1-50 ppm ammonia concentration with relative response per ppm value of 0.01675.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2019.2942361