Synthesis of nearly monodisperse CO3O4 nanocubes via a microwave-assisted solvothermal process and their gas sensing properties

摘要

Nearly monodisperse CO3O4 nanocubes have been prepared by a microwave-assisted solvothermal (MS) method at 180℃ for 20min. The samples are characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD pattern and TEM images of the products illustrated that CO_3O_4 nanocubes had a cubic phase with a lateral size of-20 nm. The gas response of the CO_3O_4 nanocubes was studied to several typical organic gases. The CO_3O_4 nanocubes showed good gas sensing performance towards xylene and ethanol vapors with rapid and high responses at a low-operating temperature. The results showed that the CO_3O_4 nanocubes can be used to fabricate high performance gas sensors.