具有生物启发的多孔聚合物涂层的金属有机框架用于选分离
Shengyi Su1, Xuhao Zhou1, Xinyi Gong1
1Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|June 12, 2023
概括
合成的黑素 (AM) 在基金属有机框架 (MOF) 上产生多孔涂层,从而保持MOF的多孔性. 这些AM@MOF复合材料具有出色的六同位素分离和储存能力.
科学领域:
- 材料科学
- 纳米技术
- 化学工程
背景情况:
- 聚合物/金属有机框架 (MOF) 复合材料结合了聚合物的灵活性和MOF的结晶性.
- 传统的MOF聚合物涂层往往会阻断孔隙结构,从而降低MOF的功能.
- 开发多孔涂层对于先进的MOF复合材料应用至关重要.
研究的目的:
- 为MOF开发一种新的多孔涂层,使其保持内在的多孔性.
- 合成和表征基MOF (Zr-MOF) UiO-66 涂上色素 (AM).
- 评估这些复合材料在气体分离和储存中的性能.
主要方法:
- 在UiO-66上形成1,8-二氧纳 (1,8-DHN) 的现场表面受约束的氧化聚合物.
- 传输电子显微镜 (TEM) 用于形态分析.
- 吸附等热器用于评估孔隙性.
- 六同位素分离和储存能力测试
主要成果:
- 精确定义的核心外AM@UiO-66纳米粒子已成功合成.
- 而AM涂层并没有阻碍UiO-66芯的内在孔隙性.
- 该方法可以适应其他MOF,如MOF-808,使用不同的前体.
- 调整AM涂层厚度优化了六同位素分离的选择性和储存能力.
结论:
- 本质上微孔的合成黑素为多孔MOF涂层提供了可行的解决方案.
- AM@MOF复合材料提供可调节的等级孔隙性,用于增强分离和存储应用.
- 这种多功能策略推动了基于MOF的功能性材料的设计.
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