Improving the Porosity and Catalytic Capacity of a Zinc Paddlewheel Metal-Organic Framework (MOF) through Metal-Ion Metathesis in a Single-Crystal-to-Single-Crystal Fashion
Improving the Porosity and Catalytic Capacity of a Zinc Paddlewheel Metal-Organic Framework (MOF) through Metal-Ion Metathesis in a Single-Crystal-to-Single-Crystal Fashion
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通过单晶到单晶方式的金属离子复分解提高锌叶轮金属有机骨架（MOF）的孔隙率和催化能力
DOI：
10.1021/ic5017092
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发表时间：
2014
影响因子：
4.6
通讯作者：
Sun Daofeng
中科院分区：
文献类型：
--
作者：
Yang Jie;Wang Xiaoqing;Dai Fangna;Zhang Liangliang;Wang Rongming;Sun Daofeng
锌桨轮金属有机骨架(MOF)在去除轴向配体后往往表现出较低的稳定性或完全坍塌。因此，关于锌桨轮MOF气体吸附的报道很少。在这项工作中，对一种锌MOF(即SDU-1)进行了基于两种桨轮二次建筑单元(SBUs)的N_2和H_2的吸附测量。由于锌桨轮SBU在去除溶剂时存在固有的表面不稳定性，SDU-1具有很低的比表面积。通过单晶到单晶的金属离子复分解，将SDU-1中的锌离子与Cu2+离子交换生成Cu2+-SDU-1。通过气体吸附测试和催化性能测试，与SDU-1相比，Cu-SDU-1的孔隙率和催化性能有了显著的提高。
Zinc paddlewheel metal-organic frameworks (MOFs) frequently exhibit low stability or complete collapse upon the removal of axial ligands. Hence, there are very few reports on gas adsorption of zinc paddlewheel MOFs. In this work, the N2and H2adsorption measurements were carried out for a zinc MOF (namely,SDU-1) based on two types of paddlewheel secondary building units (SBUs): [Zn2(COO)3] and [Zn2(COO)4]. Because of the existence of inherent surface instability upon removal of solvates in zinc paddlewheel SBU,SDU-1possesses a very low surface area. Through metal-ion metathesis in a single-crystal-to-single-crystal fashion, the Zn2+ions inSDU-1were exchanged by Cu2+ions to generateCu-SDU-1. Through the measurements of gas adsorption and catalytic test, the porosity and catalytic capacity ofCu-SDU-1have been improved significantly, compared toSDU-1.