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Updated: Sep 10, 2025

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

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Published on: February 10, 2023

碳酸金属有机框架

Xin Xu¹, Jiarui Liu¹, Yechuan Zhang¹

¹Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.

Inorganic chemistry

|August 21, 2025

概括

八核 (Ni8) 金属有机框架 (MOF) 仅使用碳酸联体进行合成. 这些新的Ni8MOF显示出出色的乙/二氧化碳分离能力,即使在潮湿的条件下.

科学领域:

材料科学
无机化学
纳米技术

背景情况:

八核立方体 (Ni8) 由于其对称性和稳定性,是金属有机框架 (MOF) 的宝贵构件.
传统的基于Ni8的MOF通常使用pyrazolate配体.
需要使用替代配体构建的Ni8MOF用于各种应用.

研究的目的:

使用纯碳酸连接物合成基于Ni8的新型MOF.
研究这些新材料的结构性质和稳定性.
评估它们在乙/二氧化碳 (C2H2/CO2) 分离中的性能.

主要方法:

基于Ni8的金属有机框架 (MOF) 的溶热合成.
合成材料的特性 (例如结构分析,稳定性测试).
气体吸附和分离实验,包括在不同湿度下对C2H2/CO2混合物的分析.

主要成果:

成功合成了两种基于碳酸盐的Ni8MOF (NNM-2和NNM-3),具有fcu拓.
在广泛的pH范围内,NNM-2和NNM-3都具有稳定性.
由于其疏水孔,NNM-2显示出显著的C2H2/CO2分离 (36.4分钟g-1的保留时间差异),并且在~100%的相对湿度下保持性能.

结论:

碳酸可以有效地替代酸在构建基于Ni8的MOF.
合成的基于碳酸盐的Ni8MOF (NNM-2和NNM-3) 具有强大的结构完整性和化学稳定性.
对于选择性C2H2/CO2分离,NNM-2显示出有前途的潜力,特别是在潮湿的环境中,这突显了其实际应用.

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