Versatile Gas Sensing at Room Temperature: Facile Fabrication of a PANI-PB-ZnO Hybrid Nanocomposite for Detecting Ammonia, Acetone, and Ethanol

This study presents a gas sensor utilizing a metal–organic framework composed of nanostructured zinc oxide and polyaniline, exhibiting effective detection of acetone, ammonia, and ethanol gases under ambient room temperature conditions. It includes a comprehensive analysis of the structural characte...

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Bibliographic Details
Published in:Journal of electronic materials 2024-04, Vol.53 (4), p.2168-2180
Main Authors: Muthusamy, Suganthi, Charles, Julie, Sekar, Sugunraj, Rajan, Soumya, Kannan, Shree Kesavan
Format: Article
Language:English
Subjects:
Acetone
Ammonia
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electronics and Microelectronics
Ethanol
Gas sensors
Gases
Heterojunctions
Instrumentation
Materials Science
Metal-organic frameworks
Nanocomposites
Nanoparticles
Optical and Electronic Materials
Original Research Article
P-n junctions
Pigments
Polyanilines
Room temperature
Sensitivity enhancement
Sensors
Solid State Physics
Structural analysis
Zinc coatings
Zinc oxide
Zinc oxides
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Summary:This study presents a gas sensor utilizing a metal–organic framework composed of nanostructured zinc oxide and polyaniline, exhibiting effective detection of acetone, ammonia, and ethanol gases under ambient room temperature conditions. It includes a comprehensive analysis of the structural characteristics and gas sensing capabilities of a PANI-PB-ZnO nanocomposite, elucidating the intricate interplay of its components and its exceptional responsiveness to ammonia gas. Structural analysis of the PANI-PB-ZnO nanocomposite reveals a semicrystalline structure with an average particle size of 27 nm. The composite morphology shows polyaniline nanoparticles adorned with zinc oxide-coated Prussian blue nanocubes. The gas sensing properties of the PANI-PB-ZnO sensor, modified with a protective layer, were investigated by exposing it to different concentrations (0–500 ppm) of volatile gas analytes at room temperature. The experimental findings showcased the PANI-PB-ZnO sensor’s remarkable response and selectivity towards ammonia gas. The enhanced sensitivity to ammonia gas can be attributed to the synergistic/complementary effects of PANI, PB, and ZnO nanoparticles and the interactions at the p – n heterojunction.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-023-10909-6