从选择性CO2减少节点组装的金属有机
Man-Ting Lv1, Meng-Di Cui1, Kai-Peng Bai1
1Frontier Institute of Science and Technology, Interdisciplinary Research Center of Frontier science and technology, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Key Laboratory of Electronic Devices and Materials Chemistry, School of Chemical Engineering and Technology, Instrument Analysis Center, Xi'an Jiaotong University, Xi'an, 710054, China.
Angewandte Chemie (International ed. in English)
|April 24, 2025
概括
新的金属有机 (MOCs) 使用坚固的{Ni6}子单元有效捕获二氧化碳并使用可见光将其转化为二氧化碳. 这些MOC表现出高效率和选择性,为催化应用提供了一个有前途的新方法.
科学领域:
- 材料化学 材料化学
- 超分子化学 超分子化学
- 催化剂是一种催化剂.
背景情况:
- 金属有机 (MOC) 为各种应用提供可调节的结构.
- 结合基于集群的节点可以引入新的催化功能.
- 对于有明确定义的集群节点作为催化站点的MOCs,存在有限的例子.
研究的目的:
- 开发使用强大的{Ni6}子单位作为构建块的新型MOC.
- 研究这些MOC在二氧化碳转化中的催化活性.
- 探索MOC在选择性化学转化中的潜力.
主要方法:
- 合成MOCs使用2-mercapto-5-methyl-1,3,4-thiadiazole (Hmmt) 基{Ni6}子单元和各种碳酸盐连接体.
- 由此产生的三角镜,四面体样和八面体MOC的结构特征.
- 在可见光下对二氧化碳吸收和光催化转化为二氧化碳的评估.
主要成果:
- 成功合成了具有不同架构的三个MOC (MOC-18N,MOC-24N,MOC-36N).
- 已证明在固态中有效和选择性地吸收二氧化碳.
- 在可见光驱动的二氧化碳转化为二氧化碳的高性能实现,周转频率>3500 μmol·g−1·h−1和选择性>90%.
结论:
- {Ni6}子单位是构建功能MOC的强大节点.
- 这些MOC在减少二氧化碳方面表现出色的催化性能,优于以前的MOC.
- 这项工作提出了设计基于节点的催化MOC的新策略.
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