Figure 3

a TEM images of SnO2nanowires,b HRTEM images of SnO2nanowires,c the EDS spectrum of SnO2nanowires,d the ratio of O to Sn in SnO2nanowires annealed at different temperatures
a TEM images of SnO2nanowires,b HRTEM images of SnO2nanowires,c the EDS spectrum of SnO2nanowires,d the ratio of O to Sn in SnO2nanowires annealed at different temperatures