基于Fe的金属有机框架的增强水稳定性和催化活性,具有用于2,4-二二醇降解的辅配体
Hao Xu1, Guirong Ye1, Cui Wei1
1Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China.
Chemosphere
|June 3, 2024
概括
这项研究使用混合联体增强了基于铁的金属有机框架 (MOF),提高了它们的水稳定性和光催化活性,以消除污染物. 新材料在环境应用中表现出卓越的性能和耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 催化剂是一种催化剂.
背景情况:
- 基于铁的金属有机框架 (MOF) 提供环保,经济高效的光催化剂,但水稳定性不佳.
- 它们的不稳定性限制了它们在水性条件下污染物降解中的应用,特别是与氧化剂.
研究的目的:
- 开发一种水稳定且高度活性的基于Fe的MOF,采用混合联体战略.
- 为了提高MIL-53的光催化效率,用于去除和矿化有机污染物.
主要方法:
- 合成的MIL-53 ((Fe) 使用1,4-纳夫他林二碳酸 (1,4-NDC) 和1,4-二碳酸 (H2BDC) 酸辅配体 (MIL-53 ((Fe) -Nx).
- 评估了对2,4-二二醇降解的光催化性能.
- 评估了多个周期的催化剂稳定性和铁液.
主要成果:
- 在MIL-53 ((Fe) -Nx MOF表现出增强的水稳定性和高光催化活性.
- 在60分钟内实现了100%的去除和22%的2,4-二二矿化.
- 经过三次催化循环后,低铁出,低于欧盟标准.
结论:
- 使用1,4-NDC的混合联体策略显著提高了基于Fe的MOF的水稳定性和光催化性能.
- 增强的疏水性,结晶性,多孔性,减少带隙和改进的电荷分离有助于提高性能.
- 这种方法为扩大基于Fe的MOF在环境修复中的应用提供了一个可行的途径.
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