Ethanol Sensor Based on Hydrothermal Method Prepared Porous á-Fe_2O_3 Nanorods

摘要

Porous á-Fe_2O_3 nanorods were prepared by the hydrothermal method from FeCU and urea without templates. The as-prepared products were characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM) analysis techniques. The as-prepared á-Fe_2O_3 has the porous nanorods structured with the length of about 200 nm, diameter of about 50 nm and high surface area (255.2 m~2-g~(-1)). The gas-sensing measurement results demonstrated that the sensor of porous á-Fe_2O_3 nanorods presented high response to ethanol vapor and which can response to ethanol vapor at low-temperature. Due to the exciting gas-sensing properties, the as-prepared porous á-Fe_2O_3 nanorods would be an ideal candidate for the application in ethanol sensors.