The superhydrophobic self-cleaning coatings with reversible adhesion to water droplets have attracted much attention due to the unique and wonderful self-cleaning performance. In this paper, amorphous SiO₂ microspheres (A-SiO₂) and nano-TiO₂ particles (N-TiO₂) were used to fabricate A-SiO₂/N-TiO₂ composites by wet grinding, and then they were modified with Hexadecyltrimethoxysilane (HDTMS) and sprayed onto the surface of substrate to obtain a A-SiO₂/N-TiO₂@HDTMS coating. The water contact angle (WCA) and contact angle hysteresis (CAH) of the coating were 157.2° and 2.7°, respectively. After UV irradiation, the WCA decreased to 140.9°, and water droplets stuck onto the coating surface even the coating was turned upside down. Significantly, the coating surface returned to its original superhydrophobic state after dark storage for 8 h, showing a self-healing property. Furthermore, methyl orange solution was degraded by the as-prepared coating under UV irradiation. Moreover, the as-prepared coating maintained its self-cleaning performance after being placed outdoors for 3 months, exhibiting the potential to be used outdoors for a long time. The as-prepared coating not only has excellent properties but also the advantages of environmental protection. Therefore, this research provides an advanced method to prepare self-cleaning coatings environmentally.

对水滴具有可逆附着力的超疏水自洁涂层因其独特而美妙的自洁性能而备受关注。本文采用无定形SiO ₂微球（A-SiO ₂）和纳米TiO ₂颗粒（N-TiO ₂）湿法研磨制备A-SiO ₂ /N-TiO ₂复合材料，然后用十六烷基三甲氧基硅烷（HDTMS）并喷涂到基材表面得到A-SiO ₂ /N-TiO ₂@HDTMS 涂层。涂层的水接触角（WCA）和接触角滞后（CAH）分别为157.2°和2.7°。UV照射后，WCA下降至140.9°，即使涂层倒置，水滴仍粘在涂层表面。值得注意的是，涂层表面在暗处储存 8 小时后恢复到原来的超疏水状态，显示出自修复性能。此外，甲基橙溶液在紫外线照射下被制备的涂层降解。此外，所制备的涂层在户外放置3个月后仍保持自洁性能，显示出在户外长期使用的潜力。所制备的涂层不仅具有优异的性能，而且还具有环保等优点。所以，