Research into normal temperature gas-sensitive characteristics of polyaniline material

Wu, Jihuai; Hirata, Mitsutoshi

doi:10.1016/0925-4005(93)85004-t

Cited by 22 publications

(3 citation statements)

References 3 publications

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“…The sensing mechanism of platinum- or palladium-based hydrogen sensors is based on the catalytic decomposition of hydrogen-containing molecules. As a result, other hydrogen- bearing gases such as ammonia can also produce a response. , Noncatalytic layers, such as conductive polymers, have been used on various sensor platforms for ammonia sensing for several years. − Therefore, use of an array of sensing elements with catalytic and noncatalytic chemically sensitive layers can be highly effective for analyzing mixtures of hydrogen and ammonia. We have tested polyaniline (PANI) and polypyrrole (PPy) as candidate layers for the detection of ammonia in the presence of hydrogen.…”

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confidence: 99%

“…11,12 Noncatalytic layers, such as conductive polymers, have been used on various sensor platforms for ammonia sensing for several years. [13][14][15] Therefore, use of an array of sensing elements with catalytic and noncatalytic chemically sensitive layers can be highly effective for analyzing mixtures of hydrogen and ammonia. We have tested polyaniline (PANI) and polypyrrole (PPy) as candidate layers for the detection of ammonia in the presence of hydrogen.…”

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confidence: 99%

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Development and Calibration of Field-Effect Transistor-Based Sensor Array for Measurement of Hydrogen and Ammonia Gas Mixtures in Humid Air

et al. 1998

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A sensor array for analyzing hydrogen and ammonia gas mixtures in humid air has been developed, built into a rugged system, and calibrated for laboratory testing. The sensor array is comprised of four chemically sensitive field-effect transistors (CHEMFETs). Chemically sensitive layers for the sensors were developed and tested using a Kelvin probe. A combination of catalytic and noncatalytic thin layers (palladium and polyaniline) was selected for the four-sensor array. The work function responses of the CHEMFET sensor array to mixtures of hydrogen, ammonia, and humid air were measured. Chemometric multivariate methods, linear and nonlinear partial least squares, were used for the calibration of the sensor array using gas mixtures in the concentration range from 0 to 10 000 ppm hydrogen and ammonia in humid air. The sensor array for ammonia showed good sensitivity, selectivity, response time, and stability and is recommended for field deployment. In contrast, the sensor array for hydrogen, though highly sensitive to hydrogen, demonstrated inadequate stability, requiring further development before deployment is recommended.

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Development and Calibration of Field-Effect Transistor-Based Sensor Array for Measurement of Hydrogen and Ammonia Gas Mixtures in Humid Air

et al. 1998

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“…Until now, various kinds of NH 3 gas sensors with semiconductor (1-4), quartz crystal microbalance (QCM) (5)(6)(7), organic compound (8)(9)(10) and solid electrolyte (11)(12)(13) have been proposed as the compact NH 3 sensing devices. However, these sensors could not be applied for the on-site NH 3 gas monitoring from the view points of gas selectivity, sensitivity, cost performance, and maintenance.…”

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A New Solid Electrolyte Type Ammonia Gas Sensor Applying Praseodymium Ammonium Sulfate Based Auxiliary Sensing Electrode

2008

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A new solid electrolyte type ammonia gas sensor was fabricated by combining the trivalent aluminum cation conducting (Al 0.2 Zr 0.8 ) 20/19 Nb(PO 4 ) 3 solid electrolyte and the praseodymium ammonium sulfate Pr 2 (SO 4 ) 3 ·(NH 4 ) 2 SO 4 auxiliary sensing electrode. Since the present sensor showed such a superior sensing performance of quantitative, continuous, and reproducible response with obeying the theoretical Nernst relationship, it is expected to be a practical NH 3 gas sensor.

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Pattern Recognition Studies of Halogenated Organic Compounds Using Conducting Polymer Sensor Arrays

Masila

Sargent

Sadik³

1998

Electroanalysis

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Research into normal temperature gas-sensitive characteristics of polyaniline material

Cited by 22 publications

References 3 publications

Development and Calibration of Field-Effect Transistor-Based Sensor Array for Measurement of Hydrogen and Ammonia Gas Mixtures in Humid Air

Development and Calibration of Field-Effect Transistor-Based Sensor Array for Measurement of Hydrogen and Ammonia Gas Mixtures in Humid Air

A New Solid Electrolyte Type Ammonia Gas Sensor Applying Praseodymium Ammonium Sulfate Based Auxiliary Sensing Electrode

Pattern Recognition Studies of Halogenated Organic Compounds Using Conducting Polymer Sensor Arrays

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