Water can easily be contaminated by many dye molecules because of its high solubility with dense color. Dye‐contaminated water requires purification via the adsorptive removal of dye molecules, employing various porous materials. To increase the removal efficiency and selectivity, demands for developing new metal–organic frameworks (MOFs) for dye removal continue to increase. Herein, we present a study on the dye‐adsorption properties of MOFs based on their structures and pore sizes. The effects of dye molecule charge and size were also investigated. Three different MOFs (Universitetet i Oslo; UiO‐66, UiO‐67, Materials of Institute Lavoisier; MIL‐100 [Fe]) and four dye molecules (Methylene Blue, Rhodamine B, Tropaeolin O, and Amaranth) were employed. The results suggest that the surface properties and framework structure of the MOFs affect dye adsorption capacity and kinetics, as characterized by UV–Vis spectroscopy and adsorption kinetics analysis. These results provide opportunities for the development of MOFs for dye removal from aqueous solution.

中文翻译：

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水性介质中金属有机骨架染料的吸附动力学研究

由于水的高溶解度和浓密的色彩，水很容易被许多染料分子污染。受染料污染的水需要使用各种多孔材料通过吸附去除染料分子的方式进行纯化。为了提高去除效率和选择性，开发用于去除染料的新型金属有机骨架（MOF）的需求不断增加。本文中，我们基于MOF的结构和孔径对MOF的染料吸附性能进行了研究。还研究了染料分子电荷和大小的影响。使用了三种不同的MOF（Universityet i Oslo； UiO-66，UiO-67，拉瓦锡研究所材料； MIL-100 [Fe]）和四个染料分子（亚甲蓝，若丹明B，托帕林O和，菜红）。结果表明，MOF的表面性质和骨架结构会影响染料的吸附能力和动力学，这是通过UV-Vis光谱和吸附动力学分析来表征的。这些结果为开发从水溶液中去除染料的MOF提供了机会。