Figure 4 | NPG Asia Materials

Figure 4

From: Combining the lotus leaf effect with artificial photosynthesis: regeneration of underwater superhydrophobicity of hierarchical ZnO/Si surfaces by solar water splitting

Figure 4

(a) Relative intensity transitions of the ZnO NRs, Si MPs and ZnO/Si HRs during superhydrophobicity regeneration by underwater gas generation. (b) Schematic images of the wetting and dewetting processes of the superhydrophobic ZnO NRs, Si MPs and ZnO/Si HRs. The underwater superhydrophobicity of the ZnO NRs was not completely restored due to the narrow spacing between them. The underwater superhydrophobicity of the Si MPs was not completely regenerated due to the formation of isolated gas bubbles between the microposts. The underwater superhydrophobicity of the ZnO/Si HRs was completely regenerated. (c) Microscope images showing the regeneration of gas bubbles on the ZnO NRs, Si MPs and ZnO/Si HRs.

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