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A Polyaniline‐Based Selective Hydrogen Sensor
Author(s) -
Conn Costa,
Sestak Stephen,
Baker Anthony T.,
Unsworth Joe
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199811)10:16<1137::aid-elan1137>3.0.co;2-1
Subject(s) - polyaniline , carbon monoxide , acetylene , hydrogen , inorganic chemistry , ethylene , methane , platinum , selectivity , chemistry , materials science , organic chemistry , polymer , catalysis , polymerization
The fabrication and sensor properties of polyaniline‐platinum oxide chemoresistors in the presence of combustible gases such as hydrogen, methane, ethylene, acetylene and carbon monoxide is reported. Prior conditioning of the sensors in a hydrogen atmosphere resulted in increased selectivity and sensitivity for hydrogen in air at concentrations between 1000 and 5400 ppm. The conditioned sensors showed negligible response to hydrocarbons and carbon monoxide.