Because of a weak interface-bonding force between metal-organic frameworks (MOFs) and substrates and the loss of customization in structural designs owing to the lack of the regulation of ion sites, MOFs tend to escape from the constructed composite template. In this study, the as-prepared 2,2,6,6-tetramethylpiperidyl-1-oxyl (TEMPO)-oxidized algae cellulose nanofibers (TACFs) were used to chelate metal ions at controllable sites and subsequently firmly entangle the assembled MOF crystals. The distribution of ions and synthesized MOFs inside the gel was monitored using Raman imaging technology, which provided an intuitive approach for visually observing the ions and MOF distribution. Using this technology, the synthesized customizable TACFs@ZIF-67 aerogels exhibited a high specific surface area (734.7 m²/g), low density (6.18 mg/cm³), controlled particle distribution, good underwater structural stability, and excellent adsorption of dyes. This study provides a way for solving the dispersion problem of MOFs in nanofibrous aerogels using Raman imaging technology-assisted microcosmic fixed-point design.

由于金属有机框架 (MOF) 和基板之间的界面键合力较弱，并且由于缺乏对离子位点的调节而导致结构设计中的定制损失，因此 MOF 往往会从构建的复合模板中逃脱。在这项研究中，所制备的 2,2,6,6-四甲基哌啶基-1-氧基（TEMPO）-氧化的藻类纤维素纳米纤维（TACF）用于在可控位点螯合金属离子，随后牢固地缠结组装的 MOF 晶体。使用拉曼成像技术监测凝胶内离子和合成 MOF 的分布，为直观观察离子和 MOF 分布提供了一种直观的方法。使用该技术，合成的可定制 TACFs@ZIF-67 气凝胶表现出高比表面积 (734.7 m ²/g)、低密度 (6.18 mg/cm ³ )、可控的颗粒分布、良好的水下结构稳定性和优异的染料吸附性。该研究为利用拉曼成像技术辅助的微观定点设计解决纳米纤维气凝胶中MOFs的分散问题提供了一种方法。