Juan Pablo Morán-Lázaro, Maykel Courel-Piedrahita, Alex Guillén-Bonilla, Florentino López-Urías, Héctor Guillén-Bonilla, Víctor Manuel Soto-García, Aldo Palafox-Corona, David Alberto Hernández-Poot
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引用次数: 0
Abstract
In this paper, we studied the alcohol-sensing properties of CoMn2O4 nanoparticles for the first time. The CoMn2O4 nanoparticles were prepared via a simple microwave-assisted colloidal method using cobalt nitrate, manganese nitrate, dioctyl sulfosuccinate sodium salt, and ethylene glycol as a solvent. Various techniques were used to characterize the structural, morphological, and optical properties of CoMn2O4. The crystal structure of CoMn2O4 was found after calcination at a temperature of 400 °C. The Raman spectrum showed seven vibrational bands, while the optical absorption spectrum showed three bands, confirming the spinel CoMn2O4. Morphological analysis revealed that the porous microstructure of CoMn2O4 was composed of nanoparticles with a size distribution of 16 to 58 nm. Gas sensors were fabricated with the CoMn2O4 powders calcined at 400 °C using the brush-coating method, and experimental results showed that CoMn2O4 nanoparticles were more sensitive to n-butanol than isopropanol and ethanol at an operating temperature of 185 °C. The CoMn2O4 sensor showed a response of 6.6 at 50 ppm n-butanol with good stability, reproducibility, and repeatability. The present article provides a new sensing material that could be used as an n-butanol sensor with significant benefits for human health.
期刊介绍：
Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.
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