Reversible ultraviolet light-manipulated superhydrophobic-to-superhydrophilic transition on a tubular SiC nanostructure film

摘要

We demonstrate the ultraviolet (UV) light-induced, reversible wettability behavior for tubular SiC nanostructure film. The as-synthesized tubular SiC nanostructure film shows the superhydrophilic nature with the water contact angle 152.4° and low sliding angle. Moreover, the surface transition between superhydrophobicity and superhydrophilicity can be easily achieved by the alternation of UV irradiation and closed thermal heating. A possible mechanism is also proposed to explain the reversible wettability behavior.