One-dimensional (1D) SnO2 nanowires were synthesized from SnO powder by
heat treatment of SnO powder under Ar gas flow at atmospheric pressure, with
the next annealing on the air at 1000 °C. The morphology and
microstructure of the single crystalline SnO2 nanowires are
characterized by means of the X-ray diffraction (XRD) and scanning electron
microscopy (SEM). The band gaps of the products are ~(3.42–3.78 eV)
determined from UV/visible absorption spectral results. The SnO2
nanowires show stable photoluminescence (PL) with one emission peak centred
at around ~2 eV.