Abstract Solar steam generation is a kind of highly promising technology for harvesting solar energy and the production of fresh water. Here, we report the fabrication of a novel Ca2+ crosslinked sodium alginate modified monolithic polypyrrole 3-D conductively porous architecture (M-PPy sponge) with unique micron-sized channels as functional solar steam generator. The as-synthesized M-PPy sponge shows excellent thermal insulation (a low thermal conductivity of 0.0995 W m−1 k−1), superhydrophilicity, nearly 100% light absorption and better mechanical properties. Under a solar light power of 1 kW m−2, a higher evaporation efficiency of 84.72% was achieved, which is comparable to the best performance for polymer systems that have been reported so far. More significantly, the modified monolithic polypyrrole shows the excellent salt-resistant performance in high saline solution with the greater evaporation efficiency of 84.43% and recyclability, making it promising candidate for a variety of applications, including power generation, desalination and so on.

中文翻译：

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具有微米级通道的导电单片聚吡咯 3-D 多孔结构作为卓越的耐盐太阳能蒸汽发生器

摘要 太阳能蒸汽发电是一种极具发展前景的太阳能收集技术和淡水生产技术。在这里，我们报告了一种新型 Ca2+ 交联海藻酸钠改性整体聚吡咯 3-D 导电多孔结构（M-PPy 海绵）的制造，该结构具有独特的微米级通道作为功能性太阳能蒸汽发生器。合成的 M-PPy 海绵显示出优异的隔热性（0.0995 W m-1 k-1 的低导热率）、超亲水性、近 100% 的光吸收和更好的机械性能。在 1 kW m-2 的太阳能光功率下，实现了 84.72% 的更高蒸发效率，这与迄今为止报道的聚合物系统的最佳性能相当。更重要的是，