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Sensors 2016, 16(12), 2162; doi:10.3390/s16122162

Synthesis, Characterization, and Sensor Applications of Spinel ZnCo2O4 Nanoparticles

1
Department of Computer Science and Engineering, CUValles, University of Guadalajara, Ameca, Jalisco 46600, Mexico
2
Advanced Materials Department, IPICYT, San Luis Potosí, S.L.P. 78216, Mexico
3
Department of Physics, CUCEI, University of Guadalajara, Guadalajara, Jalisco 44410, Mexico
4
Department of Natural and Exact Sciences, CUValles, University of Guadalajara, Ameca, Jalisco 46600, Mexico
5
Department of Project Engineering, CUCEI, University of Guadalajara, Guadalajara, Jalisco 44410, Mexico
6
Department of Electrical Engineering (SEES), CINVESTAV-IPN, Mexico City, DF 07360, Mexico
7
Department of Chemistry, CUCEI, University of Guadalajara, Guadalajara, Jalisco 44410, Mexico
*
Author to whom correspondence should be addressed.
Academic Editors: Eduard Llobet and Stella Vallejos
Received: 7 October 2016 / Revised: 7 December 2016 / Accepted: 12 December 2016 / Published: 17 December 2016
(This article belongs to the Special Issue Gas Nanosensors)
View Full-Text   |   Download PDF [17086 KB, uploaded 17 December 2016]   |  

Abstract

Spinel ZnCo2O4 nanoparticles were synthesized by means of the microwave-assisted colloidal method. A solution containing ethanol, Co-nitrate, Zn-nitrate, and dodecylamine was stirred for 24 h and evaporated by a microwave oven. The resulting solid material was dried at 200 °C and subsequently calcined at 500 °C for 5 h. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy, confirming the formation of spinel ZnCo2O4 nanoparticles with average sizes between 49 and 75 nm. It was found that the average particle size decreased when the dodecylamine concentration increased. Pellets containing ZnCo2O4 nanoparticles were fabricated and tested as sensors in carbon monoxide (CO) and propane (C3H8) gases at different concentrations and temperatures. Sensor performance tests revealed an extremely high response to 300 ppm of CO at an operating temperature of 200 °C. View Full-Text
Keywords: spinel; faceted nanoparticle; cobaltite; sensors spinel; faceted nanoparticle; cobaltite; sensors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Morán-Lázaro, J.P.; López-Urías, F.; Muñoz-Sandoval, E.; Blanco-Alonso, O.; Sanchez-Tizapa, M.; Carreon-Alvarez, A.; Guillén-Bonilla, H.; Olvera-Amador, M.L.; Guillén-Bonilla, A.; Rodríguez-Betancourtt, V.M. Synthesis, Characterization, and Sensor Applications of Spinel ZnCo2O4 Nanoparticles. Sensors 2016, 16, 2162.

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