一种基于MgSb₂O₆纳米棒的新型气体传感器，用于指示一氧化碳和丙烷浓度的变化。

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

作者信息

Guillén-Bonilla Héctor, Flores-Martínez Martín, Rodríguez-Betancourtt Verónica-María, Guillen-Bonilla Alex, Reyes-Gómez Juan, Gildo-Ortiz Lorenzo, de la Luz Olvera Amador María, Santoyo-Salazar Jaime

机构信息

Departamento de Ingeniería de Proyectos, CUCEI, Universidad de Guadalajara, 44410 Guadalajara, JAL, Mexico.

Departamento de Químicas, CUCEI, Universidad de Guadalajara, 44410 Guadalajara, JAL, Mexico.

出版信息

Sensors (Basel). 2016 Jan 30;16(2):177. doi: 10.3390/s16020177.

Bystromite (MgSb2O6) nanorods were prepared using a colloidal method in the presence of ethylenediamine, after a calcination step at 800 °C in static air. From X-ray powder diffraction analyses, a trirutile-type structure with lattice parameters a = 4.64 Å and c = 9.25 Å and space group P4₂/mnm was identified. Using scanning electron microscopy (SEM), microrods with sizes from 0.2 to 1.6 μm 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 °C) at temperatures 23, 150, 200, 250 and 300 °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.

在乙二胺存在的情况下，采用胶体法制备了镁锑酸盐（MgSb₂O₆）纳米棒，然后在静态空气中于800℃进行煅烧步骤。通过X射线粉末衍射分析，确定了一种具有晶格参数a = 4.64 Å和c = 9.25 Å以及空间群P4₂/mnm的三方金红石型结构。使用扫描电子显微镜（SEM）观察到尺寸为0.2至1.6μm的微棒。透射电子显微镜（TEM）分析表明，纳米棒的长度约为86 nm，直径约为23.8 nm。使用由MgSb₂O₆氧化物粉末（在800℃煅烧）制成的小球，在23、150、200、250和300℃的温度下测试了这些纳米结构的气敏性能。在这些温度下，将小球暴露于不同浓度的一氧化碳（CO）和丙烷（C₃H₈）中。结果表明，MgSb₂O₆纳米棒在这些气氛中具有出色的稳定性和高灵敏度。