Nanocrystalline spinel zinc-substituted cobalt ferrite thick film an efficient ethanol sensor

R. R. Powar, V. G. Parale, V. D. Phadtare, S. B. Wategaonkar, R. K. Mane, J. L. Gunjkar, D. R. Patil, P. B. Piste, H. H. Park, D. N. Zambare

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6 Citations (Scopus)

Abstract

This study considered Zn-substituted cobalt ferrite (ZnxCo1-xFe2O4 (x = 0.0–1.0) (ZCF)) thick films structural, morphological, and electrical properties; and gas sensing performance. The ZCF thick film sensor was screen printed on a glass substrate and tested for different analyte gases, including H2, H2S, CO2, Cl2, NH3, LPG, and C2H5OH. We used X-ray photoelectron spectrometry to investigate composition, chemical state, iron/cobalt or zinc ratio, and cation distribution within Zn-substituted cobalt spinel ferrite tetrahedral and octahedral sites without impurities. FESEM and HR-TEM confirmed grain dimensions between 0.13 and 0.23 μm and porous, nearly spherical to flake-like morphology for the ZCF samples. Sample DC resistivity reduced with increasing temperature, confirming semiconductor nature. Thick film ZCF composition achieved highest the gas response and selectivity to 100 ppm ethanol at room temperature (30 °C). Overall results confirmed that flake-like ZCF sensors could be effective ethanol gas sensors.

Original languageEnglish
Article number100607
JournalMaterials Today Chemistry
Volume22
DOIs
Publication statusPublished - 2021 Dec

Bibliographical note

Funding Information:
The authors RRP and DNZ are grateful to the Department of Chemistry, Physics, USIC, Shivaji University, Kolhapur, Maharashtra, India, for helping with the instrumentation facilities. HHP and VGP announce that this work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) (grant 2020R1A5A1019131).

Funding Information:
The authors RRP and DNZ are grateful to the Department of Chemistry, Physics, USIC, Shivaji University, Kolhapur, Maharashtra, India, for helping with the instrumentation facilities. HHP and VGP announce that this work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) (grant 2020R1A5A1019131 ).

Publisher Copyright:
© 2021 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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