Dual Plasmons with Bioinspired 3D Network Structure Enabling Ultrahigh Efficient Solar Steam Generation

作者：Yong Wang, Wanting He, Ruiqi Yang, Darius Pohl, Bernd Rellinghaus, Peter A.C. Neathway, Z. Kalantari Bolaghi, Chen Wang, Ting Yu, Fan Yang, Guozhu Chen, Mohamed Chaker, Aycan Yurtsever, Gianluigi A. Botton, Yannan Liu, Dongling Ma · 发表于：Nano Letters · 年份：2024 · DOI：10.1021/acs.nanolett.4c03018 · 被引用次数：15 · 研究领域：Solar-Powered Water Purification Methods、Solar Thermal and Photovoltaic Systems、Copper-based nanomaterials and applications

Plasmonic nanomaterials such as Au, Ag, and Cu are widely recognized for their strong light–matter interactions, making them promising photothermal materials for solar steam generation. However, their practical use in water evaporation is significantly limited by the trade-off between high costs and poor stability. In this regard, we introduce a novel, nonmetallic dual plasmonic TiN/MoO 3– x composite. This composite features a three-dimensional, urchin-like biomimetic structure, with plasmonic TiN nanoparticles embedded within a network of plasmonic MoO 3– x nanorods. As a solar absorber, the TiN/MoO 3– x composite achieves a high evaporation rate of ∼2.05 kg m –2 h –1 with an energy efficiency up to 106.7% under 1 sun illumination, outperforming the state-of-the-art plasmonic systems. The high photothermal stability and unique dual plasmonic nanostructure of the TiN/MoO 3– x composite are demonstrated by advanced in situ laser-heating transmission electron microscopy and photon-induced near-field electron microscopy/electron energy-loss spectroscopy, respectively. This work provides new inspiration for the design of plasmonic materials.