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首页> 外文期刊>Advanced Sustainable Systems >Biomimetic Superstructures Assembled from Au Nanostars and Nanospheres for Efficient Solar Evaporation
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Biomimetic Superstructures Assembled from Au Nanostars and Nanospheres for Efficient Solar Evaporation

机译：从非盟仿生上层建筑组装为高效的太阳能Nanostars和团簇蒸发

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The control of the shapes and assembling structures of plasmonic nanoparticles is vital for the optical properties and photothermal conversion performance. Here, gold nanospheres and nanostars are assembled into ridges/disordered nanohole arrays architecture in nanoparticle colloids using light-trapping Papilio Paris forewings (OPPs) as templates. In solar steam generation, water evaporation efficiency reaches 83.3% for nanostar assemblies (NSAs) and 68.6% for nanosphere assemblies (NSPAs) under 1-sun (1 kW m-2) irradiation. Both the biomimetic superstructures exhibit significant enhancement of near-infrared light absorption compared to OPPs, and NSAs show higher absorption than NSPAs in the range of 200-2500 nm. Finite element method simulations reveal such broadband absorption is ascribed to the hybridization of localized surface plasmon modes of continuous-assembled Au nanoparticles in the biomimetic structures as well as the wing photonic structures with light-transferring ridges with an inverted V shape and light-trapping disordered nanohole arrays. It is revealed that optical properties of superstructures can be tuned not only by controlling their 3D structures but also by changing the shape of nanosized building blocks. It is hoped that this work will provide inspirations for the design and assembly of nanophotonic structures and devices for solar energy conversion.
机译：形状和组装的控制电浆纳米粒子的结构是至关重要的光学特性和光照转换的性能。和nanostars组装成山脊/无序nanohole阵列架构使用光捕获纳米胶体蝴蝶巴黎根本(哦)作为模板。太阳能蒸汽发电,水蒸发nanostar组件效率达到83.3%(》)和68.6% nanosphere总成(NSPAs) 1-sun(1千瓦m - 2)辐照。仿生上层建筑展览近红外光的重要改进吸收比哦,》一书展示更高吸收比NSPAs 200 - 2500的范围nm。宽带吸收是归因于杂交的局部表面等离子体模式continuous-assembled Au纳米颗粒的仿生结构以及机翼光子结构light-transferring用一个倒V形状和山脊光捕获无序nanohole数组。显示,光学性质的上层建筑不仅可以通过调优控制他们的3 d结构也改变纳米尺度的积木的形状。希望这项工作将提供灵感的设计和组装纳米光子结构和设备对太阳能能量转换。

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