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2016-02-01 - Article/Dans un journal avec peer-review - Anglais - 6 page(s)

Lontio Fomekong Roussin, Lahem Driss, Debliquy Marc , Dupont Védi, Ngolui John Lambi, Delcorte Arnaud, "Co-precipitation synthesis by malonate route, structural characterization and gas sensing properties of Zn-doped NiO" in Materials Today: Proceedings, 3, 586 – 591

  • Edition : Elsevier, Cambridge (United Kingdom)
  • Codes CREF : Capteurs et périphériques (DI2563)
  • Unités de recherche UMONS : Science des Matériaux (F502)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)
Texte intégral :

Abstract(s) :

(Anglais) 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.