Fig. 1From: ZnO/Cu2O/Si Nanowire Arrays as Ternary Heterostructure-Based Photocatalysts with Enhanced Photodegradation PerformancesCross-sectional SEM images of the synthesized heterostructures: a ZS, b CS, and c ZCS nanowire arrays. The inserted figures displayed the diameter distribution of the prepared samples, respectively. d XRD patterns of ZS nanowires, CS nanowires, and ZCS nanowires, respectivelyBack to article page