Fig. 2: Morphologies and chemical components of pure SnO and SnO -3Ni nanosheets.
From: NiO nanoparticle-decorated SnO2 nanosheets for ethanol sensing with enhanced moisture resistance

a SEM image and b, c TEM images of pure SnO2 nanosheets; d SEM image, e TEM image and f HRTEM image of SnO2-3Ni nanosheets; g XPS survey spectra of the pure SnO2 and SnO2-3Ni samples; h high-resolution core level Sn 3d spectra of pure SnO2 nanosheets and SnO2-3Ni; i high-resolution core level Ni 2p spectra of SnO2-3Ni