Hierarchically structured metal-organic frameworks assembled by hydroxy double salt-template synergy with high space-time yields
Hierarchically structured metal-organic frameworks assembled by hydroxy double salt-template synergy with high space-time yields
复制标题
羟基双盐-模板协同组装的多级结构金属有机骨架具有高时空产率
DOI：
10.1039/c7ce01843f
复制
发表时间：
2018-02-28
期刊：
影响因子：
3.1
通讯作者：
Xi, Hongxia
中科院分区：
文献类型：
--
作者：
Duan, Chongxiong;Li, Feier;Xi, Hongxia
我们报告了一种简单，绿色和通用的合成路线，利用羟基双盐(HDS)-模板协同作用来实现具有高时空产率（STYs）的分层结构金属有机框架（H-MOFs）。采用协同模板策略，在30min（结晶时间）内合成具有分层结构的HKUST-1和ZIF-8。扫描电镜、透射电镜、N-2吸附-解吸等温线和孔径分布显示，MOF产物具有多模态、分层多孔结构，中孔/大孔与微孔相互连接。制备的H-MOFs的孔隙率随模板用量和模板类型的不同而不同。阐明了HDS和模板对中孔/大孔生成的协同作用。本文揭示的协同效应极大地扩展了室温和常压下H-MOF合成模板的选择。此外，快速合成方法很容易扩展，速度可达2366 kg m(-3) d(-1)，这是合成分层结构的HKUST-1的新记录。本研究开发的绿色、通用和可持续的方法为快速合成具有可调孔隙率和高STYs的各种h - mof提供了新的方向，具有广泛的应用前景。
We report a facile, green, and versatile synthetic route that exploits hydroxy double salt (HDS)-template synergy to achieve hierarchically structured metal-organic frameworks (H-MOFs) with high space-time yields (STYs). Hierarchically structured HKUST-1 and ZIF-8 were synthesized using the cooperative template strategy within 30 min (crystallization time). The resulting MOF products exhibited multimodal, hierarchically porous structures with meso-/macropores interconnected with micropores, as revealed by scanning electron microscopy, transmission electron microscopy, N-2 adsorption-desorption isotherms, and pore size distributions. The porosities of the produced H-MOFs varied with the amount and type of template. The synergistic effect of the HDS and template on meso-/macropore generation was elucidated. The synergistic effect disclosed here dramatically extends the choice of templates for H-MOF synthesis at room temperature and pressure. Furthermore, the rapid synthetic method is readily scalable with an STY of up to 2366 kg m(-3) d(-1), a new record for the synthesis of hierarchically structured HKUST-1. The green, versatile, and sustainable method developed in this work provides a new direction for the rapid synthesis of various H-MOFs with tuneable porosities and high STYs for a wide range of applications.