Desalination using solar-driven photothermal evaporators (SPEs) is of great significance for solving mankind's current shortage of fresh water. Herein, inspired by the vascular bundles for the directed and rapid transport of water and organic pollution such as inorganic salts in the vascular system of sugarcane, a polydopamine (PDA) @ attapulgite (ATP) based biomimetic aerogel (named as PAS aerogels) was prepared for efficient desalination. In PAS aerogels, the ATP gives the aerogel excellent mechanical properties, whereas the PDA gives the aerogel excellent light absorption properties. In the wet state, PAS aerogels have low thermal conductivity (0.24 W $\bullet$ m^-1 $\bullet$ K^-1) and low apparent density (0.13 g $\bullet$ cm^-3). Indicating that the photothermal evaporation rate of PAS-1.5 aerogel is 1.71 kg $\bullet$ m^-2 $\bullet$ h^-1 in pure water under 1 sun irradiation. Meanwhile, it can maintain excellent evaporation performance even in high salt solution with 20% concentration (about 1.50 kg $\bullet$ m^-2 $\bullet$ h^-1). Owing to the vertical pore structure of the aerogel, which is similar to that of sugarcane transport tissues, the aerogel has both an adequate supply of water and excellent salt tolerance. Furthermore, outdoor experiment of Yellow Sea water evaporation demonstrates its feasibility in the actual production of desalination.

利用太阳能驱动的光热蒸发器（SPEs）进行海水淡化对于解决人类当前的淡水短缺问题具有重要意义。在此，受甘蔗维管系统中水和无机盐等有机污染物定向快速运输的维管束启发，制备了聚多巴胺（PDA）@凹凸棒石（ATP）基仿生气凝胶（PAS气凝胶）用于高效脱盐。在 PAS 气凝胶中，ATP 赋予气凝胶优异的机械性能，而 PDA 赋予气凝胶优异的光吸收性能。在潮湿状态下，PAS 气凝胶具有低导热性（0.24 W$\bullet$米^-1 $\bullet$K ^-1 ) 和低表观密度 (0.13 g$\bullet$厘米^-3）。表明PAS-1.5气凝胶的光热蒸发率为1.71 kg$\bullet$米^-2 $\bullet$h ^-1在纯水中1次太阳照射下。同时，即使在20%浓度（约1.50 kg）的高盐溶液中也能保持优异的蒸发性能$\bullet$米^-2 $\bullet$h ^-1）。由于气凝胶具有类似于甘蔗运输组织的垂直孔结构，气凝胶具有充足的水分供应和优异的耐盐性。此外，黄海水蒸发的室外实验证明了其在实际海水淡化生产中的可行性。