Co-precipitation synthesis by malonate route, structural characterization and gas sensing properties of Zn-doped NiO

Lontio Fomekong, Roussin;Lahem, D.;Debliquy, M.;Dupont, V.;Delcorte, Arnaud;et.al.
(2016) Materials Today : Proceedings — Vol. 3, n° 2, p. 586-591 (2016)

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Authors
  • Lontio Fomekong, RoussinUCLouvain
    Author
  • Lahem, D.
    Author
  • Debliquy, M.
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  • Dupont, V.
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  • Delcorte, ArnaudUCLouvain
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Abstract
Zn-doped NiO powders have been prepared via pyrolysis at 500°C of zinc-nickel malonate precursors prepared by co-precipitation using different molar ratios of Zn/Ni (0.01 - 0.04 and 0.1). Structural characterization of the powders was performed by X-ray powder Diffraction (XRD) and Time of Flight-Secondary Ion Mass Spectrometry (ToF-SIMS). The results confirm that a single phase of Ni1-xZnxO (x=0.01-0.04, 0.1) is formed. Electrical measurements reveal that its activation energy decreases with increasing amount of Zn. Gas-sensing measurements reveal that the optimal operating temperature is 300 °C and that the use of 2 % Zn as a dopant improved the gas-sensing properties.
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Lontio Fomekong, R., Lahem, D., Debliquy, M., Dupont, V., Ngolui, J. L., & Delcorte, A. (2016). Co-precipitation synthesis by malonate route, structural characterization and gas sensing properties of Zn-doped NiO. Materials Today : Proceedings, 3(2), 586-591. https://doi.org/10.1016/j.matpr.2016.01.095 (Original work published 2016)