在流动反应堆中对共价有机框架的连续合成和处理
Safiya Khalil1, Abdullah Alazmi1, Guanhui Gao2
1Department of Chemical and Biomolecular Engineering, Rice University, MS-362, 6100 Main Street, Houston, Texas 77005, United States.
ACS applied materials & interfaces
|September 18, 2024
概括
连续流合成使得共价有机框架 (COF) 的可扩展生产成为可能. 这种方法以各种形式产生高纯度的COF,在污染物降解方面表现出卓越的光催化活性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 纳米技术 纳米技术
背景情况:
- 共价有机框架 (COF) 通常通过能源密集的批量溶热方法合成,导致可扩展性和处理的限制.
- 这些合成挑战阻碍了COF在各种应用中的广泛采用和商业化.
研究的目的:
- 开发一种可扩展和高效的方法,用于COF的连续合成和处理.
- 为了产生具有可控形态和高晶度的COF.
- 在实际应用中评估流合成COF的性能,例如光催化.
主要方法:
- 采用流量微反应器,用于连续合成因胺和酸相关的COFs.
- 控制了COF形成的关键阶段,包括纳米粒子生长,自我组装和沉.
- 用结晶性,多孔性和宏观结构来表征由此产生的COF.
主要成果:
- 实现了前所未有的COF生产率,高达61,111公斤m-3天-1.1.
- 成功地在多功能宏观形式 (单体,膜,打印,包装床) 中生产了高度晶体和多孔的COF.
- 使用流合成的COF与批量类似物和TiO2.2相比,证明了使用 perfluorooctanoic acid (PFOA) 的优异光催化降解.
结论:
- 流式微反应器技术为COF合成和加工提供了可扩展和高效的途径.
- 流合成的COF表现出极好的性能和性能,特别是在光催化过程中.
- 这种方法克服了传统批量方法的局限性,为更广泛的COF应用铺平了道路.
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