ZnO/SnO$_2$/Zn$_2$SnO$_4$ nanocomposite: preparation and characterization for gas sensing applications

Zinc oxide (ZnO) / Tin oxide (SnO$_2$) / Zinc stannate (Zn$_2$SnO$_4$) nanocomposite is prepared via hydrothermal route followed by calcination. The nanocomposite is characterized by X-ray powder diffraction, Fourier Transform Infrared spectroscopy and UV spectroscopy techniques. The nanocomposite’s morphology and the elemental composition is recorded using field emission scanning electron microscopy and energy dispersive X-ray spectroscopy analysis. The nanorods dispersed in the matrix of nanoparticles increases the surface active sites for gas adsorption and this material would be explored as a potential candidate for gas sensing applications at room temperature with quick response and recovery in the near future.