Super-hydrophobic and photocatalytic antimicrobial activity of iodine-doped ZnO nanoarray films

Abstract

Iodine(I) doped ZnO nanoarray films (ZnO/I-X) were prepared on a silicon wafer by the in situ growth method. The structure and morphology of the samples were tested by XRD, SEM, DRS. The hydrophobic properties were characterized by the water contact angle on the surface. The results show that the doped iodine extended the light absorption range of the ZnO nanofilm and the nanoarray film (ZnO/I-X) are super hydrophobic. The antimicrobial activity of iodine(I)-doped ZnO nanofilms towards E. coli under visible light illumination is much higher than that of the ZnO film. In addition, ZnO/I-3 exhibits the best antimicrobial activity.