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Fig. 5 | Nanoscale Research Letters

Fig. 5

From: Hierarchical Heterostructure of ZnO@TiO2 Hollow Spheres for Highly Efficient Photocatalytic Hydrogen Evolution

Fig. 5

a Photocurrent responses and b photocatalytic H2 evolution of bare ZnO, bare TiO2, and ZnO@TiO2 heterojunctions. c Photocatalytic H2 evolution over Pt–ZnO@TiO2 heterojunctions composites with different weight ratios of Pt. d Photocatalytic stability of ZnO@TiO2 hollow spheres. All the measurement was carried out under a simulated solar light irradiation source with intensity of 100 mW/cm2

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