Fabrication of a superamphiphobic surface on the bamboo substrate

The superamphiphobic-functionalized CuO microflowers/Cu(OH)2 nanorod arrays hierarchical structure was prepared on the bamboo surface as a rough coating via a facile alkali assistant surface oxidation technique. Thereafter, the long- hydrophobic groups were grafted onto the bamboo to obtain superamphiphobic surfaces, which were super-repellent for water and hexadecane. The morphologies, microstructures, crystal structure, chemical compositions and states, as well as the hydrophobicity of the films on the bamboo substrates were analyzed by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and water contact angle measurement. Additionally, the coating showed excellent environmental stability and high conductivity. It is expected that the work might expand the application of the superamphiphobic bamboo products.