Interfacial solar evaporation (ISE) is a promising strategy for seawater desalination and sewage purification, which could be used to alleviate freshwater scarcity. However, low evaporation efficiency and poor stability restricted its practical viability. To solve this problem, we reported a facile and general in-situ pyrolysis reduction strategy for preparing silver microspheres doping bamboo shoot porous-carbon (Ag-BSC) for the first time. By coating bamboo shoot with Ag-BSC, the bamboo shoot-based double-layer solar evaporator (named AC-BS) was prepared. The photothermal layer of Ag-BSC not only possessed broad light absorption of 96 %, but also exhibited excellent bactericidal performance. Benefiting from the excellent thermal management of bamboo shoot and the photothermal conversion performance of Ag-CBS particles, under one sun illumination, the evaporation rate (ER) and efficiency of AC-BS were 1.51 kg m⁻² h⁻¹ and 86.8 %, respectively. AC-BS exhibited excellent mildew-resistant in seawater for seven consecutive days, without mildew aggregation. In particular, crystalline salt can be self-cleaned in the absence of light owing to the surface wettability of bamboo shoot. Furthermore, AC-BS also showed the outstanding purification effect, which could still keep stable evaporation efficiency in harsh environments. These properties of AC-BS ensured its high applicability and durability in practice.

界面太阳能蒸发（ISE）是一种很有前途的海水淡化和污水净化策略，可用于缓解淡水短缺。然而，蒸发效率低和稳定性差限制了其实际可行性。为了解决这个问题，我们首次报道了一种简便通用的原位热解还原策略，用于制备掺杂竹笋多孔碳（Ag-BSC）的银微球。通过用Ag-BSC包覆竹笋，制备了竹笋基双层太阳能蒸发器（命名为AC-BS）。Ag-BSC的光热层不仅具有96%的宽光吸收，而且表现出优异的杀菌性能。受益于竹笋优异的热管理和Ag-CBS颗粒的光热转换性能，在一次阳光照射下，^-2  h ^-1和 86.8 %，分别。AC-BS在海水中连续7天表现出优异的防霉性能，无霉变聚集现象。特别是，由于竹笋的表面润湿性，结晶盐可以在没有光的情况下自洁。此外，AC-BS还表现出出色的净化效果，在恶劣环境下仍能保持稳定的蒸发效率。AC-BS的这些特性确保了其在实践中的高适用性和耐用性。