CdFe2O4 films for electroresistive detection of ethanol and formaldehyde vapors

CdFe2O4 films for electroresistive detection of ethanol and formaldehyde vapors Spinel CdFe2O4 thin films were synthesized by spray pyrolysis. The structural probe studies confirmed the multicrystalline nature of the films with their spinel structure. The crystallites have sizes between 13 and 37 nm and island morphology. The energy dispersive spectroscopy reveals the presence of iron, oxygen and cadmium in the film. The room temperature electrical resistance of the thin film, best measured at a voltage of 10 V, decreases rapidly if it is exposed to vapors of formaldehyde or ethanol. The sensor has detection limits of 15 ppm for ethanol and of 15 ppm for formaldehyde and a sensitivity of 0.0387 nA per ppm of ethanol. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microchimica Acta Springer Journals

CdFe2O4 films for electroresistive detection of ethanol and formaldehyde vapors

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Publisher
Springer Vienna
Copyright
Copyright © 2018 by Springer-Verlag GmbH Austria, part of Springer Nature
Subject
Chemistry; Nanochemistry; Nanotechnology; Characterization and Evaluation of Materials; Analytical Chemistry; Microengineering
ISSN
0026-3672
eISSN
1436-5073
D.O.I.
10.1007/s00604-018-2855-x
Publisher site
See Article on Publisher Site

Abstract

Spinel CdFe2O4 thin films were synthesized by spray pyrolysis. The structural probe studies confirmed the multicrystalline nature of the films with their spinel structure. The crystallites have sizes between 13 and 37 nm and island morphology. The energy dispersive spectroscopy reveals the presence of iron, oxygen and cadmium in the film. The room temperature electrical resistance of the thin film, best measured at a voltage of 10 V, decreases rapidly if it is exposed to vapors of formaldehyde or ethanol. The sensor has detection limits of 15 ppm for ethanol and of 15 ppm for formaldehyde and a sensitivity of 0.0387 nA per ppm of ethanol.

Journal

Microchimica ActaSpringer Journals

Published: Jun 6, 2018

References

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