Gas sensing performance of Sol-gel grown NiO-doped Cr2O3 nanoparticles

  • Tunis B. Hassan
Keywords: Sol-gel, gas sensor, NiO doped Cr2O3 nanoparticles.

Abstract

The sensors based on Nickel oxide doped chromic oxide (NiO: Cr2O3) nanoparticals were fabricated using thick-film screen printing of sol-gel grown powders. The structural, morphological investigations were carried out using XRD, AFM, and FESEM. Furthermore, the gas responsivity were evaluated towards the NH3 and NO2 gas. The NiO0.10: Cr2O3 nanoparticles exhibited excellent response of 95 % at 100oC and better selectivity towards NH3 with low response and recovery time as compared to pure Cr2O3 and can stand as reliable sensor element for NH3 sensor related applications.

Published
2018-09-11
Section
Articles