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稀土金属有机框架与非平面色素组用于高效光催化

Wei Wu¹, Tao He¹, Xin Zhang¹

¹Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China.

Inorganic chemistry

|April 11, 2024

概括

一种新型的稀土甲酸金属有机框架 (RE-PMOF),BUT-233,有效降解化学战剂模拟剂. 它的非平面色素结构增强了在LED照射下有效氧化的催化活性.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
超分子化学超分子化学

背景情况:

非平面氨酸是生物和化学过程中的重要催化剂.
由于复杂的有机化学,合成人造非平面氨酸具有挑战性.
金属有机框架 (MOF) 为催化应用提供可调节的结构.

研究的目的:

开发一种具有非平面色素单元的新型稀土色素金属有机框架 (RE-PMOF).
研究新的MOF的催化活性,用于降解化学战剂模拟剂.
了解光催化过程中非平面色素核的结构-活性关系.

主要方法:

合成和描述RE-PMOF,BUT-233的3D框架和非平面的氨酸连接体.
对自由联体和MOF的单晶结构分析.
使用CEES作为LED照射下的模型化合物进行光催化降解实验.
照片/电化学性质研究以阐明催化机制.

主要成果:

成功合成了BUT-233,一个表面积为649m2/g的微孔MOF.
这种MOF具有非平面的,状的氨酸核,与平面的自由连接体不同.
BUT-233在5分钟内 (t1⁄2 = 2分钟) 有效地降解了CEES到CEESO,没有检测到CEESO2的形成.
与之前报告的MOF催化剂相比,MOF显示出高的催化活性.

结论:

合成的RE-PMOF,BUT-233,对CEES的降解表现出极好的光催化活性.
在MOF毛孔中的非平面色素结构对于其增强的催化性能至关重要.
BUT-233代表了开发先进氧化催化剂的有希望的材料.

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