Gas-Sensing Properties of Zinc Ferrite Nanoparticles Synthesized by the Molten-Salt Route

• Published in: Journal of the American Ceramic Society Vol. 91; no. 8; pp. 2724 - 2726
• Main Authors: Darshane, Sonali L., Deshmukh, Rupali G., Suryavanshi, Shankar S., Mulla, Imtiaz S.
• Format: Journal Article
• Language: English
• Published: Malden, USA Blackwell Publishing Inc 01.08.2008; Blackwell; Wiley Subscription Services, Inc
• Subjects: Ceramics; Chemistry; Colloidal state and disperse state; Crystallites; Ethanol; Ethyl alcohol; Exact sciences and technology; Ferrite; General and physical chemistry; Inhibitors; Nanoparticles; Nanostructure; Operating temperature; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Salt; Studies; Zinc; Zinc ferrites; Ternary compound; LPG; Growth; Nanoparticle; Industrial application; Transition metal Compounds; Alcohol; Hydrogen sulfides; Zinc Oxides; Potential; Ferrites; Crystallites; Ferrite; Alkanol; Nitrogen oxide; Ethanol; Transition element compounds; Transition metal; Sodium chloride; X ray diffraction; Molten salt; Iron Oxides; Transmission electron microscopy; Spinel; Spinels; Inhibitor; Gas sensors
• ISSN: 0002-7820; 1551-2916
• DOI: 10.1111/j.1551-2916.2008.02475.x

Zinc ferrite (ZnFe2O4) nanoparticles have been synthesized at 700°C using sodium chloride as a growth inhibitor. Single‐phase formation of spinel zinc ferrite having crystallite size in the range of 15–20 nm was observed by XRD and confirmed by TEM. In the present work, the gas‐sensing properties of these zinc ferrite nanoparticles toward ethanol, LPG, H2, NOx. SOx, and H2S have been studied. It was found that they exhibit excellent selective sensitivity toward 200 ppm of H2S at the operating temperature of 250°C, and thus this nanosized ferrite is expected to be useful in an industrial application as a potential H2S gas sensor.