Analyzing the kinetic response of tin oxide-carbon and tin oxide-CNT composites gas sensors for alcohols detection

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4916755· OSTI ID:22454486

Kamble, Vinayak; Umarji, Arun ^[1]

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1. Materials Research Centre, Indian Institute of Science, Bangalore, 560012 (India)

Tin oxide nanoparticles are synthesized using solution combustion technique and tin oxide – carbon composite thick films are fabricated with amorphous carbon as well as carbon nanotubes (CNTs). The x-ray diffraction, Raman spectroscopy and porosity measurements show that the as-synthesized nanoparticles are having rutile phase with average crystallite size ∼7 nm and ∼95 m{sup 2}/g surface area. The difference between morphologies of the carbon doped and CNT doped SnO{sub 2} thick films, are characterized using scanning electron microscopy and transmission electron microscopy. The adsorption-desorption kinetics and transient response curves are analyzed using Langmuir isotherm curve fittings and modeled using power law of semiconductor gas sensors.

• OSTI ID: 22454486
• Journal Information: AIP Advances, Vol. 5, Issue 3; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
ALCOHOLS
CARBON NANOTUBES
DESORPTION
DETECTION
DOPED MATERIALS
FILMS
ISOTHERMS
KINETICS
NANOPARTICLES
POROSITY
RAMAN SPECTROSCOPY
RUTILE
SCANNING ELECTRON MICROSCOPY
SURFACE AREA
TIN OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION