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首页> 外文期刊>ACS applied materials & interfaces >Effective Gas Separation Performance Enhancement Obtained by Constructing Polymorphous Core-Shell Metal-Organic Frameworks
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Effective Gas Separation Performance Enhancement Obtained by Constructing Polymorphous Core-Shell Metal-Organic Frameworks

机译:通过构建多晶芯壳金属 - 有机框架获得的有效气体分离性能增强

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摘要

We reported a new polymorphous core-shell metal-organic framework (MOF) in the form of a three-dimensional MOF core wrapped in a two-dimensional layered MOF shell by applying a general acid-solvent synergy synthesis. This hybrid material can achieve high adsorptive selectivity/capacity simultaneously, which is validated by the unary isotherms of CO2 and N-2 conducted at 273 K (0-1 bar). The MOF-S@MOF-C with a 7-day exchange showed the highest CO2/N-2 selectivity (32.7) among our samples and a moderate CO2 capacity (2.3 mmol/g), which are 3 times and 1.6 times those of the MOF-C and MOF-S, respectively. We attributed the enhanced selective adsorption performance to the negligible N-2 uptake exhibited by the outer shell of MOF-S@MOF-C. This study provides a new route for elevating gas separation performance by constructing multifunctional core-shell materials.
机译:我们通过应用一般酸溶剂协同合成,我们报道了一种新的多晶硅壳金属 - 有机框架(MOF),其三维MOF芯的形式包裹在二维层状MOF壳中。 该杂化材料可以同时达到高吸附选择性/容量,其通过在273k(0-1bar)的CO 2和N-2的UNRARE等温线验证。 具有7天交换的MOF-S @ MOF-C显示了我们的样品中的最高CO2 / N-2选择性(32.7),中等CO 2容量(2.3mmol / g),这是3倍和1.6倍 分别是MOF-C和MOF-S。 我们将增强的选择性吸附性能归因于由Mof-S @ Mof-C的外壳展示的可忽略不计的N-2摄取。 该研究提供了一种通过构建多功能芯壳材料来提高气体分离性能的新途径。

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