A Novel Gas Sensor Based on MgSb2O6 Nanorods to Indicate Variations in Carbon Monoxide and Propane Concentrations

作者：Guillen Bonilla Hector^*; Flores Martinez Martin; Rodriguez Betancourtt Veronica Maria; Guillen Bonilla Alex; Reyes Gomez Juan; Gildo Ortiz Lorenzo; Olvera Amador Maria de la Luz; Santoyo Salazar Jaime

来源：Sensors (Switzerland), 2016, 16(2): 177.

DOI：10.3390/s16020177

• propane
• nanorods
• carbon monoxide
• trirutile
• sensitivity

Bystromite (MgSb2O6) nanorods were prepared using a colloidal method in the presence of ethylenediamine, after a calcination step at 800 degrees C in static air. From X-ray powder diffraction analyses, a trirutile-type structure with lattice parameters a = 4.64 angstrom and c = 9.25 angstrom and space group P4(2)/mnm was identified. Using scanning electron microscopy (SEM), microrods with sizes from 0.2 to 1.6 mu m were observed. Transmission electron microscopy (TEM) analyses revealed that the nanorods had a length of 86 nm and a diameter 23.8 nm. The gas-sensing properties of these nanostructures were tested using pellets elaborated with powders of the MgSb2O6 oxide (calcined at 800 degrees C) at temperatures 23, 150, 200, 250 and 300 degrees C. The pellets were exposed to different concentrations of carbon monoxide (CO) and propane (C3H8) at these temperatures. The results showed that the MgSb2O6 nanorods possess excellent stability and high sensitivity in these atmospheres.

• 出版日期2016-2