Study on the effect of cuprite content on the electrical and CO2 sensing properties of cuprite-copper ferrite nanopowder composites

The paper reports the synthesis and characterization of cuprite/copper ferrite nanopowder composites. The composites were synthesized using co-precipitation with oxalates precursor route. The phase and microstructure of the powder samples were characterized using X-ray diffraction, BET surface area...

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Bibliographic Details
Published in:Journal of alloys and compounds 2017-02, Vol.695, p.937-943
Main Authors: Sumangala, T.P., Thimont, Yohann, Baco-Carles, Valérie, Presmanes, Lionel, Bonningue, Corine, Pasquet, Isabelle, Tailhades, Philippe, Barnabé, Antoine
Format: Article
Language:English
Subjects:
Co-precipitation
Cuprite
Electrical properties
Engineering Sciences
Ferrite
Gas sensor
Materials
Nanopowder
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Summary:The paper reports the synthesis and characterization of cuprite/copper ferrite nanopowder composites. The composites were synthesized using co-precipitation with oxalates precursor route. The phase and microstructure of the powder samples were characterized using X-ray diffraction, BET surface area analyzer and scanning electron microscopy. The powders were fabricated to device using a simple and efficient shaping technique. These devices were used further to carry out electrical property measurements in various atmospheres. The type of charge carriers were found by noting the sense of change in resistance when the air atmosphere on the sample was replaced with argon. CO2 responses were reported for the whole series of composites. The effect of cuprite concentration on the CO2 sensing performance was found to be independent of cuprite concentration up to certain limits (70%at). [Display omitted] •CuO/CuFe2O4 nanopowder composites with controlled amount of CuO were synthesized using co-precipitation method.•A simple device was developed for performing electrical and gas sensing performance of powder samples.•The electrical properties are driven by the CuFe2O4 phase.•The results show that CuFe2O4 can be considered as a potential CO2 gas sensor without the CuO addition.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2016.10.197