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Title: Investigation on effects of surface morphologies on response of LPG sensor based on nanostructured copper ferrite system

Abstract

Graphical abstract: Figure shows the variations in resistance with time for copper ferrite system synthesized in various molar ratio. A maximum variation in resistance was observed for copper ferrite prepared in 1:1 molar ratio. Highlights: ► Evaluation of structural, optical and surface morphologies. ► Significant variation in LPG sensing properties. ► Surface modification of ferric oxide pellet by copper ferrite. ► CuFe{sub 2}O{sub 4} pellets for LPG sensing at room temperature. -- Abstract: Synthesis of a copper ferrite system (CuFe{sub 2}O{sub 4}) via chemical co-precipitation method is characterized by X-ray diffraction, surface morphology (scanning electron microscope) and optical absorption spectroscopy. These characteristics show their dependence on the relative compositions of the two subsystems. They are further confirmed by the variation in the band gap. A study of gas sensing properties shows the spinel CuFe{sub 2}O{sub 4} synthesized in 1:1 molar ratio exhibit best response to LPG adsorption/resistance measurement. Thus resistance based LPG sensor is found robust, cheap and may be applied for kitchens and industrial applications.

Authors:
 [1];  [1];  [2];  [1];  [3]
  1. Nanomaterials and Sensors Research Laboratory, Department of Physics, University of Lucknow, Lucknow 226007, U.P. (India)
  2. (India)
  3. DST Unit on Nanosciences, Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, U.P. (India)
Publication Date:
OSTI Identifier:
22215593
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; ADSORPTION; COPPER; FERRITE; FERRITES; MICROSTRUCTURE; NANOSTRUCTURES; SCANNING ELECTRON MICROSCOPY; SENSORS; SPINELS; SURFACE PROPERTIES; SURFACES; X-RAY DIFFRACTION

Citation Formats

Singh, Satyendra, Yadav, B.C., E-mail: balchandra_yadav@rediffmail.com, Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, U.P., Gupta, V.D., and Dwivedi, Prabhat K. Investigation on effects of surface morphologies on response of LPG sensor based on nanostructured copper ferrite system. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.06.064.
Singh, Satyendra, Yadav, B.C., E-mail: balchandra_yadav@rediffmail.com, Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, U.P., Gupta, V.D., & Dwivedi, Prabhat K. Investigation on effects of surface morphologies on response of LPG sensor based on nanostructured copper ferrite system. United States. doi:10.1016/J.MATERRESBULL.2012.06.064.
Singh, Satyendra, Yadav, B.C., E-mail: balchandra_yadav@rediffmail.com, Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, U.P., Gupta, V.D., and Dwivedi, Prabhat K. Thu . "Investigation on effects of surface morphologies on response of LPG sensor based on nanostructured copper ferrite system". United States. doi:10.1016/J.MATERRESBULL.2012.06.064.
@article{osti_22215593,
title = {Investigation on effects of surface morphologies on response of LPG sensor based on nanostructured copper ferrite system},
author = {Singh, Satyendra and Yadav, B.C., E-mail: balchandra_yadav@rediffmail.com and Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, U.P. and Gupta, V.D. and Dwivedi, Prabhat K.},
abstractNote = {Graphical abstract: Figure shows the variations in resistance with time for copper ferrite system synthesized in various molar ratio. A maximum variation in resistance was observed for copper ferrite prepared in 1:1 molar ratio. Highlights: ► Evaluation of structural, optical and surface morphologies. ► Significant variation in LPG sensing properties. ► Surface modification of ferric oxide pellet by copper ferrite. ► CuFe{sub 2}O{sub 4} pellets for LPG sensing at room temperature. -- Abstract: Synthesis of a copper ferrite system (CuFe{sub 2}O{sub 4}) via chemical co-precipitation method is characterized by X-ray diffraction, surface morphology (scanning electron microscope) and optical absorption spectroscopy. These characteristics show their dependence on the relative compositions of the two subsystems. They are further confirmed by the variation in the band gap. A study of gas sensing properties shows the spinel CuFe{sub 2}O{sub 4} synthesized in 1:1 molar ratio exhibit best response to LPG adsorption/resistance measurement. Thus resistance based LPG sensor is found robust, cheap and may be applied for kitchens and industrial applications.},
doi = {10.1016/J.MATERRESBULL.2012.06.064},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}