Solar vapor generation has become a promising water purification technology owing to its eco-friendly and energy-saving features. However, it remains as a big challenge to further improve the solar-driven evaporation performance, especially to further increase the efficiency of solar energy utilization. Here, a novel plasmonic wooden flower is fabricated, in which Ag-polydopamine (PDA) core-shell structured nanoparticles (Ag@PDA NPs) are loaded on the wooden flower. The superior structural characteristics of the porous wooden flower and the Ag@PDA NPs provide a synergetic effect. Thus, it exhibits a high light-harvesting absorption of 98.65%. Moreover, the hydrophilic Ag@PDA NPs promote the formation of water films on both sides of the flower petal. Meanwhile, the abundant capillary channels and pinholes in the wood further enhance the heat convection and solar-driven evaporation of the water films on both sides of the petal. With the excellent thermal management performance, the plasmonic wooden flower device has a high vapor generation rate of 2.08 kg m⁻² h⁻¹ and an ultrahigh solar-to-vapor efficiency of 97.0% under 1 sun illumination, among the best values reported in the literature. It is promising for future water treatment applications in large scale including recovery of metal ions, brine desalination and sewage purification.

太阳能蒸气发电由于其环保和节能的特性而成为一种有前途的水净化技术。然而，进一步提高太阳能驱动的蒸发性能，尤其是进一步提高太阳能利用效率仍然是一个巨大的挑战。在这里，制造了一种新颖的等离子木花，其中将Ag-聚多巴胺（PDA）核壳结构的纳米颗粒（Ag @ PDA NPs）负载在木花上。多孔木花和Ag @ PDA NP的出色结构特征提供了协同作用。因此，它表现出98.65％的高集光吸收。此外，亲水性的Ag @ PDA NPs促进了花瓣两侧水膜的形成。与此同时，木材中丰富的毛细管通道和针孔进一步增强了花瓣两侧的水膜的热对流和太阳能驱动的蒸发。等离子木花装置具有出色的热管理性能，蒸气产生率高达2.08 kg m在文献报道的最佳值中，^-1 h时为^-2 h ^-1，太阳至蒸气的超高效率为97.0％。对于未来的大规模水处理应用（包括金属离子的回收，盐水脱盐和污水净化），它是有前途的。