Fabrication of room temperature liquid petroleum gas sensor based on PAni–CNT–V2O5 hybrid nanocomposite

Vanadium pentoxide (V 2 O 5 ) nanoparticles have been synthesized by hydrothermal method. Polyaniline (PAni)—carbon nanotube (CNT)—V 2 O 5 hybrid nanocomposite has synthesized by chemical polymerization of PAni in the presence of CNT—V 2 O 5 nanocomposite. The band gap energy of the hybrid nanocompo...

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Bibliographic Details
Published in:Applied nanoscience 2019-11, Vol.9 (8), p.1719-1729
Main Authors: Albaris, Heiner, Karuppasamy, Gurunathan
Format: Article
Language:English
Subjects:
Carbon nanotubes
Chemical composition
Chemical synthesis
Chemistry and Materials Science
Coated electrodes
Detection
Electron microscopes
Energy gap
Fourier transforms
Gas sensors
Infrared analysis
Liquefied petroleum gas
Materials Science
Membrane Biology
Nanochemistry
Nanocomposites
Nanoparticles
Nanotechnology
Nanotechnology and Microengineering
Organic chemistry
Original Article
Polyanilines
Recovery time
Reproducibility
Response time
Room temperature
Spectrum analysis
Spin coating
Vanadium pentoxide
X-ray diffraction
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Summary:Vanadium pentoxide (V 2 O 5 ) nanoparticles have been synthesized by hydrothermal method. Polyaniline (PAni)—carbon nanotube (CNT)—V 2 O 5 hybrid nanocomposite has synthesized by chemical polymerization of PAni in the presence of CNT—V 2 O 5 nanocomposite. The band gap energy of the hybrid nanocomposite is calculated as 3.02 eV using UV–Vis absorption spectroscopy. Chemical composition and crystalline nature has been analyzed using fourier transform infrared spectroscopy and X-ray diffraction spectroscopy, respectively. Scanning electron microscope and transmission electron microscope are involved in the morphological analysis of the hybrid nanocomposite. Sensing electrodes are fabricated by spin coating of the sensing material on printed circuit board. The electrodes have been investigated for their sensing behavior towards oxygen, hydrogen and liquid petroleum gas (LPG) at room temperature. It has been observed that the electrode is selectively sensitive to the LPG with improved sensitivity (300%), response time (20 s) and recovery time (15 s) in the range of 10–50 ppm. The reproducibility of the response curve of the electrode is tested and it is 83.33% stable for the period of 50 days.
ISSN:2190-5509
2190-5517
DOI:10.1007/s13204-019-00967-w