Geometry‐Assisted Three‐Dimensional Superlocalization Imaging of Single‐Molecule Catalysis on Modular Multilayer Nanocatalysts |
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| Authors: | Dr. Rui Han Dr. Ji Won Ha Dr. Chaoxian Xiao Yuchen Pei Zhiyuan Qi Bin Dong Nicholas L. Bormann Prof. Dr. Wenyu Huang Prof. Dr. Ning Fang |
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| Affiliation: | 1. Ames Laboratory, U.S. Department of Energy, and Department of Chemistry, Iowa State University, Ames, Iowa, 50011 (USA);2. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 (USA) |
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| Abstract: | To establish the structure–catalytic property relationships of heterogeneous catalysts, a detailed characterization of the three‐dimensional (3D) distribution of active sites on a single catalyst is essential. Single‐particle catalysis of a modular multilayer catalytic platform that consists of a solid silica core, a mesoporous silica shell, and uniformly distributed Pt nanoparticles sandwiched in between these layers is presented. The first 3D high‐resolution super‐localization imaging of single fluorescent molecules produced at active sites on the core‐shell model nanocatalysts is demonstrated. The 3D mapping is aided by the well‐defined geometry and a correlation study in scanning electron microscopy and total internal reflection fluorescence and scattering microscopy. This approach can be generalized to study other nano‐ and mesoscale structures. |
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| Keywords: | heterogeneous catalysis mesoporous silica multilayer nanocatalysts platinum three‐dimensional imaging |
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