As the starting material, kaolin is selectively and diversely fabricated to the superhydrophobic, superoleophobic-superhydrophilic, and superamphiphobic materials, respectively. The wettability of the kaolin surface can be selectively controlled and regulated to different superwetting states by choosing the corresponding modification reagent. The procedure is facile to operate, and no special technique or equipment is required. In addition, the procedure is cost-effective and time-saving and the obtained super-repellent properties are very stable. The X-ray photoelectron spectroscopy analysis demonstrates different changes of kaolin particles surfaces which are responsible for the different super-repellency. The scanning electron microscopy displays geometric micro- and nanometer structures of the obtained three kinds of super-repellent materials. The results show that kaolin has good applications in many kinds of superwetting materials. The method demonstrated in this paper provides a new strategy for regulating and controlling the wettability of solid surfaces selectively, diversely, and comprehensively.

Most superhydrophobic surfaces are fragile and even lose their functions under harsh conditions especially in outdoor applications. In this study, we have demonstrated a facile strategy for fabricating eco‐friendly and mechanical durable superhydrophobic material from eggshell. The as‐prepared superhydrophobic materials possess not only excellent self‐cleaning property and under oil superhydrophobicity, but also high‐efficient oil/water separation capability. More importantly, the obtained materials show outstanding and mechanical durable water repellency, which can maintain superhydrophobicity after 360 cm abrasion length of sandpaper. In addition, the materials also show durable superhydrophobic toward strong acidic/alkali solutions, UV irradiation, and water droplet impact, which demonstrates the outstanding chemical and environmental stability. This facile fabrication of the mechanical durable superhydrophobic materials and the utilization of daily garbage will provide the new ideas for engineering materials and accelerate the real application of the super‐repellent materials.

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