Green synthesis of CdFe2O4 nanoparticles and their application for vapor sensing

• Main Authors: Sachin Bangale, Sambhaji Bamane
• Format: Article
• Language: English
• Published: Applied Science Innovations Private Limited 2013-03-01
• Series: Carbon: Science and Technology
• Subjects: CdFe2O4; Ethanol; Thick film; Nanocrystalline; sensor; thick film
• Online Access: http://www.applied-science-innovations.com/cst-web-site/CST-5-1-2013/CST%20-%2066%20-%20FINAL.pdf

The work reported about preparation of nanocrystalline CdFe2O4 through an combustion method and characterization of their microstructural, morphological and gas sensing properties. The structural properties investigated by X-ray diffraction revealed with CdFe2O4 cubic structure. crystallite size was found to be ~ 64 nm. The morphological study characterized by scanning electron microscopy and transmission electron microscopy. The sensor fabricated from these nanocrystalline CdFe2O4 exhibits high sensitivity and rapid response/recovery to ethanol at 350 °C. The sensitivity was up to 59.23% when the sensor was exposed to 50 to 200 ppm ethanol and the response and recovery time is about 40 and 50 s respectively. The linear dependence of sensitivity on the ethanol concentration was found in the range 50-200 ppm. Hence studies revealled that nanocrystalline CdFe2O4 can be used as sensing material for fabricating high performance ethanol sensors.