Abstract
Fe2O3/Fe3O4 composited film with micro-nano structures is prepared on the surface of N80 steel. The Fe2O3/Fe3O4 composited film after modification with stearic acid shows great superhydrophobicity with a water contact angle of 157.3° and sliding angle of 8.1°. Furthermore, the superhydrophobic Fe2O3/Fe3O4 composited film can keep anti-wettability when it is immersed in the water and make water droplets keep sphere on it. Furthermore, the superhydrophobic surface also shows excellent self-cleaning property. Our work finds that annealing in the atmosphere after egg white burning can produce nanoneedle structures perpendicular to the micro-octahedron, which plays a significant role to make micro-nano hierarchical structures for Fe2O3/Fe3O4 composite film.
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