题目： | Vertical 3D Printed Forest-Inspired Hierarchical Plasmonic Superstructure for Photocatalysis |
作者： | Wei Guo,1 Yuanlan Liu,1 Yinghui Sun,2 Yawen Wang,1 Wei Qin,1 Bo Zhao,1 Zhiqiang Liang,1,* Lin Jiang1,* |
单位： | 1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China 2College of Energy, Soochow Institute for Energy and Materials Innovations and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China |
摘要： | Efficient light-harvesting is of significant importance to achieve high solar energy utilization efficiency for various solar-driven technologies. Compared with a 2D planar structure, a 3D plasmonic structure can largely increase the light adsorption/interaction areas and also utilizes the plasmonic effect to achieve much higher light utilization efficiency. However, this remains challenging in terms of structural design, reliable manufacturing, and ability to scale up. Herein, inspired by the light absorption strategy of natural forests, a hierarchical plasmonic superstructure is demonstrated composed of vertical TiO2 pillar arrays (as tree trunks), dense nanorod arrays (as branches), and a large number of plasmonic Au nanoparticles (as leaves). Such a forestlike plasmonic superstructure can effectively absorb light from the surface plasmonic resonance effects of Au nanoparticles and the multiple scattering of light in the hierarchical branched structure. The strong light absorption and abundant photocatalytic active sites help yield a 15-fold higher nitrogen photo-fixation activity than that of the flat TiO2 films decorated with Au nanoparticles. The study provides an effective strategy to construct 3D plasmonic superstructures with excellent light-harvesting efficiency and high stability and can be readily applied to a range of light-driven applications. |
影响因子： | 16.836 |
分区情况： | 一区 |
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