Abstract
One dimensional (1D) Co3O4 nanorods have been synthesized by a simple one-pot solvothermal method. Field emission scanning electron microscopic and transmission electron microscopic results revealed that the Co3O4 samples were rod-like structure with a diameter of 50nm, where the subunits were irregular-shaped nanoparticles. The response to 10ppm toluene of the rod-like Co3O4-based sensor was 6.0 at 200°C, which was about 6 times higher than that of the commercial Co3O4 powder. Interestingly, the rod-like Co3O4-based sensor exhibited not only a high response but also faster response and recovery speeds to toluene gases. The good sensing performance suggests that this unique rod-like Co3O4 nanostructure could be a promising candidate as a sensing material for gas sensor.
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