Figure 1

SEM images of undoped (a, b) and Zn-doped SnO2 (c, d). (e) EDS spectra of Zn-doped SnO2 shown in (c, d). (f) XRD patterns of undoped and Zn-doped SnO2. Undoped (S1 600°C) and Zn-doped SnO2 (S2 600°C).

SEM images of undoped (a, b) and Zn-doped SnO2 (c, d). (e) EDS spectra of Zn-doped SnO2 shown in (c, d). (f) XRD patterns of undoped and Zn-doped SnO2. Undoped (S1 600°C) and Zn-doped SnO2 (S2 600°C).