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Vol. 134, Issue 11, November 2011, pp.95-106




Simple Synthesis of ZnCo2O4 Nanoparticles as Gas-sensing Materials


* S. V. Bangale,* S. M. Khetre ** D. R. Patil and * S. R. Bamane

* Metal Oxide Research, Laboratory, Department of Chemistry, Dr. Patangrao Kadam

 Mahavidyalaya, Sangli 416416 (M.S.) India

** Bulk and Nano Materials Research Lab, Dept. of Physics, Rani Laxmibai College

Parola, Dist Jalgaon, 425111

Tel.: 0233-2535993, fax: 0233-2535993

E-mail: bangale_sv@rediffmail.com



Received: 15 July 2011   /Accepted: 21 November 2011   /Published: 29 November 2011

Handbook of Laboaratory Measurements book


Abstract: Semiconductive nanometer-size material ZnCo2O4 was synthesized by a solution combustion reaction of inorganic reagents of Zn(NO3)3. 6H2O, Co(NO3)3.6H2O and glycine as a fuel. The process was a convenient, environment friendly, inexpensive and efficient preparation method for the ZnCo2O4 nanomaterial. The synthesized materials were characterized by TG/DTA, XRD, EDX, SEM, and TEM. Conductance responses of the nanocrystalline ZnCo2O4 thick film were measured by exposing the film to reducing gases like Acetone, Ethanol, Ammonia (NH3), Hydrogen (H2), Hydrogen sulphide (H2S), Chlorine (Cl2) and Liquefied petroleum gas (LPG). It was found that the sensors exhibited various sensing responses to these gases at different operating temperature. Furthermore, the sensor exhibited a fast response and a good recovery. The results demonstrated that ZnCo2O4 can be used as a new type of gas-sensing material which has a high sensitivity and good selectivity to Liquefied petroleum gas (LPG) at 100 ppm.


Keywords: Nanostructure ZnCo2O4, XRD, SEM, TEM, Gas sensor


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