Nanorods assembled hierarchical urchin-like WO3 nanostructures: Hydrothermal synthesis, characterization, and their gas sensing properties

The unique 3D urchin-like WO3 nanostructures have been successfully synthesized via a facile CTAB-assisted hydrothermal method. The 3D urchin-like WO3 nanostructures showed excellent gas sensing performances towards ethanol. The possible growth mechanism of the urchin-like WO3 nanostructures was discussed in detail.233