Abstract
3D leaf-like Alpha-iron oxide (α-Fe2O3) nanostructure and other nanomorphologies were fabricated by adding different ethanol content in ethanol-water mixed solvent under a simple solvothermal route. The structures and morphologies of nanostructures were characterized by X-ray diffraction (XRD), field-emission electron scanning microscopy (FESEM) and transmission electron microscopy (TEM). Their morphologies and gas-sensing properties were mainly studied. The sensor synthesized in 80vol% ethanol–water as the solvent exhibited lower operating temperature (260°C), higher response and shorter Response/recovery time (about 8s and 9s). The results indicated that 3D leaf-like iron oxide (α-Fe2O3) nanostructure was a potential candidate for fabricating effective acetone sensor.
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