化学
吸附
粒子(生态学)
可视化
金属
化学物理
分布(数学)
金属颗粒
化学工程
物理化学
有机化学
人工智能
数学分析
工程类
地质学
海洋学
计算机科学
数学
作者
Emina Yamada,Hirotoshi Sakamoto,H. Matsui,Tomoya Uruga,Kunihisa Sugimoto,Minh-Quyet Ha,H. van Dam,Ryotaro Matsuda,Mizuki Tada
摘要
Many unique adsorption properties of metal-organic frameworks (MOFs) have been revealed by diffraction crystallography, visualizing their vacant and guest-loaded crystal structures at the molecular scale. However, it has been challenging to see the spatial distribution of the adsorption behaviors throughout a single MOF particle in a transient equilibrium state. Here, we report three-dimensional (3D) visualization of molecular adsorption behaviors in a single crystalline particle of a MOF by in situ X-ray absorption fine structure spectroscopy combined with computed tomography for the first time. The 3D maps of water-coordinated Co sites in a 100 μm-scale MOF-74-Co crystal were obtained with 1 μm spatial resolution under several water vapor pressures. Through the visualization of the water vapor adsorption process, 3D spectroimaging revealed the mechanism and spatial heterogeneity of guest adsorption inside a single particle of a crystalline MOF.
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