纳米级共价有机框架的水性和无表面活性剂合成
Xueying Kong1, Samson Afewerki1,2, Yu Pan3
1Department of Materials Science and Engineering, Division of Nanotechnology and Functional Materials, Uppsala University, Uppsala, SE-75121, Sweden.
Angewandte Chemie (International ed. in English)
|December 8, 2025
概括
研究人员开发了一种可持续的,无表面活性剂的方法,用于创建可分散在水中的纳米级共价有机框架 (nanoCOFs). 这些纳米COF对先进的光学应用和水中的高效光催化有前途.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 光催化作用的光催化
背景情况:
- 纳米化共价有机框架 (nanoCOF) 对光学和光电子应用至关重要.
- 传统的合成方法使用表面活性剂和有机溶剂,阻碍了可扩展性和水相容性.
研究的目的:
- 开发一种可扩展的,没有表面活性剂的方法来合成水分散的纳米COFs.
- 将氨酸单元纳入纳米COF,以提高光学和催化性能.
主要方法:
- 水性酸被用作imine-linked nanoCOF合成中的溶剂.
- 通过调整单体和催化剂度来控制聚合动力学.
- 氨酸单元的质子化引入了表面电荷,以提高分散性.
主要成果:
- 合成了具有受控尺寸 (50 nm5 μm) 和可调整形态的高晶度纳米COF.
- 取得了优异的水分散性和高合稳定性.
- 纳米COF在水中对zylamine氧化表现出显著的光催化活性.
结论:
- 开发的可持续方法提供了一条通往高性能纳米COF的多功能途径.
- 这种方法推进了基于COF的光催化和对其光物理性质的研究.
- 纳米COF适用于光学应用和高效的绿色化学催化.
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