An exploration of 3-methoxypropionitrile chemical sensor based on layered hexagonal NiCo2O4 nanoplates as electrode material

Abstract Binary metal oxide, nickel-cobalt oxide (NiCo2O4), was hydrothermally synthesized for the successful electrochemical electrode applications in chemical sensor. Benefited from the large surface area, binary NiCo2O4 stacked hexagonal nanoplates (HNPs) based electrode was utilized for the electrochemical sensing application towards teratogenic chemical i.e. 3-methoxypropionitrile (3-MPN). The sensing measurements displayed a reproducible sensitivity of ∼605 μAμM-1cm-2, detection limit of ∼11.8 μM with the correlation coefficient (R) of ∼0.99502 and good linearity from ∼10 μM to ∼100 μM. Stability and repeatability of binary NiCo2O4 stacked HNPs based electrode was investigated with satisfactory results. Our synthesized binary NiCo2O4 stacked HNPs based electrode is promising for sensor applications and thus, enlightens the possibility of synthesizing other binary oxide materials.