Potassium Ions Induced Framework Interpenetration for Enhancing the Stability of Uranium-Based Porphyrin MOF with Visible-Light-Driven Photocatalytic Activity
Potassium Ions Induced Framework Interpenetration for Enhancing the Stability of Uranium-Based Porphyrin MOF with Visible-Light-Driven Photocatalytic Activity
复制标题
钾离子诱导骨架互穿增强具有可见光驱动光催化活性的铀基卟啉 MOF 的稳定性
DOI：
10.1021/acs.inorgchem.0c02473
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发表时间：
2021-01-18
影响因子：
4.6
通讯作者：
Shi, Wei-Qun
中科院分区：
文献类型：
--
作者：
Huang, Zhi-Wei;Hu, Kong-Qiu;Shi, Wei-Qun
许多MOFs的稳定性并不令人满意，这严重限制了其潜在应用的探索。鉴于此，我们提出了一种通过引入能够与金属节点配位的碱金属K+来提高MOF稳定性的策略，这最终诱导互穿的铀酰卟啉框架连接为一个整体（IHEP-9）。稳定性实验表明，IHEP-9具有良好的热稳定性高达400摄氏度，并可以保持其在水溶液中的pH值为2至11的结晶状态。IHEP-9作为一种多相光催化剂，在室温下可见光驱动下对CO2环加成反应的催化活性也得到了证实。这种诱导的相互渗透和固定方法可能是有希望的，以提高结构稳定性的更多功能的MOFs的制造。
The stability of many MOFs is not satisfactory, which severely limits the exploration of their potential applications. Given this, we have proposed a strategy to improve the stability of MOFs by introducing alkali metal K+ capable of coordinating with metal nodes, which finally induces the interpenetrating uranyl-porphyrin framework to connect as a whole (IHEP-9). The stability experiments reveal that the IHEP-9 has good thermal stability up to 400 degrees C and can maintain its crystalline state in the aqueous solution with pH ranging from 2 to 11. The catalytic activity of IHEP-9 as a heterogeneous photocatalyst for CO2 cycloaddition under the driving of visible light at room temperature is also demonstrated. This induced interpenetration and fixation method may be promising for the fabrication of more functional MOFs with improved structural stability.