Enhanced ethanol sensing performance of gel calcined Cd–Sn oxide nanocomposites

Cd–Sn oxide nanocomposite powders were synthesized by a facile gel calcination method, starting from precursor sol having Cd:Sn ratio as 2:1. The powders were characterized in terms of their phase formation behaviour and morphological features using X-ray diffractometer, FTIR, UV–visible spectra and...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2017, Vol.28 (2), p.1555-1561
Main Authors: De, Arijit, Antony, Graceson, Kundu, Susmita
Format: Article
Language:English
Subjects:
Cadmium
Characterization and Evaluation of Materials
Chemistry and Materials Science
Ethanol
Ethyl alcohol
Materials Science
Nanocomposites
Optical and Electronic Materials
Oxides
Performance enhancement
Perovskites
Roasting
Sensors
Vapors
Vapour
X ray spectra
X-ray diffraction
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Summary:Cd–Sn oxide nanocomposite powders were synthesized by a facile gel calcination method, starting from precursor sol having Cd:Sn ratio as 2:1. The powders were characterized in terms of their phase formation behaviour and morphological features using X-ray diffractometer, FTIR, UV–visible spectra and FESEM analyses. Sensor fabricated from nanocomposite calcined at 1050 °C exhibited excellent ethanol sensing performance, ~86 % for 50 ppm ethanol vapour. It also revealed quite a good sensitivity at concentration down to 5 ppm vapour. Sensors were quite stable and selective towards ethanol vapour. A possible mechanism for enhanced performance due to formation of preferential perovskite cadmium stannite phase has been discussed.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-016-5695-7