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Synthesis and characterization of cobalt antimonate nanostructures and their study as potential CO and CO2 sensor at low temperatures

Cobalt antimonate (CoSb 2 O 6 ) nanostructures were prepared using the microwave-assisted colloidal method, employing cobalt nitrate, antimony chloride, ethylenediamine and ethyl alcohol. The solvent was evaporated through microwave radiation at 140 W. The precursor material was dried at 200 °C and...

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Published in:Journal of materials science. Materials in electronics 2018-09, Vol.29 (18), p.15632-15642
Main Authors: Guillén-Bonilla, Alex, Blanco-Alonso, Oscar, Guillén-Bonilla, José Trinidad, de la Luz Olvera-Amador, M., Rodríguez-Betancourtt, Verónica M., Sánchez-Martínez, Araceli, Morán-Lázaro, Juan Pablo, Martínez-García, Mario, Guillén-Bonilla, Héctor
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cited_by cdi_FETCH-LOGICAL-c353t-89375dbf58ff4187b5e0da70d7b1e403b7417732be358e09e52bcec01371e3b43
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container_title Journal of materials science. Materials in electronics
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creator Guillén-Bonilla, Alex
Blanco-Alonso, Oscar
Guillén-Bonilla, José Trinidad
de la Luz Olvera-Amador, M.
Rodríguez-Betancourtt, Verónica M.
Sánchez-Martínez, Araceli
Morán-Lázaro, Juan Pablo
Martínez-García, Mario
Guillén-Bonilla, Héctor
description Cobalt antimonate (CoSb 2 O 6 ) nanostructures were prepared using the microwave-assisted colloidal method, employing cobalt nitrate, antimony chloride, ethylenediamine and ethyl alcohol. The solvent was evaporated through microwave radiation at 140 W. The precursor material was dried at 200 °C and then calcined at 300, 400, 500, and 600 °C in static air. The crystalline phase of the material was found at 600 °C by means of X-ray diffraction. Morphology was analyzed through scanning electron microscopy, finding octahedral particles with an edge length between 3 and 50 µm, and other particles of nanometric size. The size of these irregularly shaped nanoparticles was estimated of ~ 17.6 nm by means of transmission electron microscopy. UV–vis analyses of semiconducting powders revealed a forbidden band of ~ 1.82 eV. For the gas detection experiments, thick films and pellets were made of CoSb 2 O 6 powders (600 °C). The tests were carried out in air, CO, and CO 2 atmospheres at different gas concentrations and operating temperatures. The cobalt antimonate nanoparticles showed high sensitivity at 300 °C and 300 ppm of CO, and a good dynamic response at 100 ppm of CO 2 .
doi_str_mv 10.1007/s10854-018-9157-2
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1573-482X
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source Springer Nature
subjects Antimony
Carbon dioxide
Carbon monoxide
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cobalt
Dynamic response
Ethanol
Ethylenediamine
Low temperature
Materials Science
Microwaves
Nanoparticles
Nanostructure
Optical and Electronic Materials
Scanning electron microscopy
Thick films
Transmission electron microscopy
X-ray diffraction
title Synthesis and characterization of cobalt antimonate nanostructures and their study as potential CO and CO2 sensor at low temperatures
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