Construction of 1D/2D α-Fe2O3/SnO2 Hybrid Nanoarrays for Sub-ppm Acetone Detection
Top view SEM images of (a) SnO2 NSAs and (c) α-Fe2O3/SnO2 HNAs. Cross-sectional SEM images of (b) SnO2 NSAs and (d) α-Fe2O3/SnO2 HNAs. The inset of (c) shows a SEM close-up image of α-Fe2O3 NRs. (e) TEM and (f) HRTEM images of the pure SnO2 NSAs. (g) TEM and (h) HRTEM images of α-Fe2O3/SnO2 HNAs. The inset of (g) shows an individual α-Fe2O3 rod grown on the surface of SnO2 nanosheet.
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