The SnO oxidation state is further verified through Raman spectroscopy (Fig. ), which shows the characteristic B1g and A1g peaks at 112 cm -1 and 209 cm -1 , respectively, without any peaks that would correspond with SnO2 formation . This confirms the successful synthesis of the high-surface-area, MOX SnO nanoflowers, although with some unconverted Sn6(OH)4O4. The nanostructured surface enhances the surface area-volume ratio, increasing the adsorption sites, while the p-type semiconductor nature of SnO, verified by a Mott-Schottky plot (Fig. .1), should result in decreased conductivity upon electron transfer . Given that many VOCs are reducing gases (electrondonating), the resistance through the particle network should therefore increase upon VOC exposure.