Highly selective C2H2 and CO2 capture and magnetic properties of a robust Co-chain based metal-organic framework
Highly selective C2H2 and CO2 capture and magnetic properties of a robust Co-chain based metal-organic framework
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基于 Co-chain 的金属有机框架的高度选择性 C2H2 和 CO2 捕获和磁性
DOI：
10.1039/c9dt00510b
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发表时间：
2019-06-14
影响因子：
4
通讯作者：
Gao, Zi-Wei
中科院分区：
文献类型：
--
作者：
Ding, Tao;Zhang, Sheng;Gao, Zi-Wei
以吡啶基修饰的四羧酸2，6-二（2 '，5'-二羧基苯基）吡啶（H4 L）为原料，在溶剂热条件下合成了一种稳定的钴基金属有机骨架[Co-3（L）（OH）（2）（H2O）（4）]中心点2DMF中心点2 H（2）O（1）.结构分析表明，1是一个三维框架的基础上1D交替的Co-4链单元。1a的去溶剂化结构包含1D开放通道，具有高极性孔表面，表面装饰有开放金属位点、μ（3）-OH基团和吡啶基位点，表现出C2 H2和CO2分子之间的多点相互作用。该骨架有效地吸收C2 H2和CO2，对C2 H2和CO2的选择性显著高于CH 4。此外，对1的磁性进行了研究，发现其具有缓慢的冻结过程。
A robust Co-based metal-organic framework, [Co-3(L)(OH)(2)(H2O)(4)]center dot 2DMF center dot 2H(2)O (1), was synthesized under solvothermal conditions using pyridyl-decorated tetracarboxylic acid, 2,6-di(2', 5'-dicarboxylphenyl) pyridine (H4L). Structural analysis demonstrates that 1 is a 3D framework based on 1D alternate Co-4 chain units. The desolvated structure of 1a contains 1D open channels with a highly polar pore surface decorated with open metal sites, mu(3)-OH group and pyridyl group sites, exhibiting multipoint interactions between C2H2 and CO2 molecules. The framework efficiently takes up C2H2 and CO2 with significant selectivity for C2H2 and CO2 over CH4. In addition, the magnetic properties of 1 were investigated and it showed a slow freezing process.