Effect of Tier Surface Structure on Non-wetting Materials and Robust Superamphiphobic Surface

Surface structure is a key factor for the non-wettability, that's because different surface tier structure can catch different numbers of air-pockets. The weak hierarchical surface structure limits the application of non-wetting materials. In this work, the different tier structure Te@C, Te@C-SiO2, SNTs are prepared to characterize the influence of tier structure on the non-wettability and N-2 adsorption-desorption isotherms are used to characterize the air-pockets. The aluminum dihydrogen phosphate is used to strength the robustness of SiO2NTs superamphiphobic surface. The results indicate that the more tiers of surface structure have a higher S-BET,S- higher S-BET ensure enough air-pockets, which can make more contributions to the non-wettability. The prepared robust superamphiphobic surface shown extreme robustness, and after 50 cycles of sandpaper abrasion, it is still super-repellent to hexadecane.