Abstract
Porous α-Fe2O3 nanorods were prepared by the hydrothermal method from FeCl4 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 α-Fe2O3 has the porous nanorods structured with the length of about 200 nm, diameter of about 50 nm and high surface area (255.2 m2•g-1). The gas-sensing measurement results demonstrated that the sensor of porous α-Fe2O3 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 α-Fe2O3 nanorods would be an ideal candidate for the application in ethanol sensors.
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