Rapid construction of hierarchically porous metal-organic frameworks by a spray-drying strategy for enhanced tannic acid adsorption

被引：10

作者：

Liu, Jingran ^{[1
]}

Wei, Yan ^{[2
]}

Chang, Miao ^{[2
]}

Wang, Ni ^{[1
]}

Wang, Dan ^{[1
,2
]}

Wang, Jie-Xin ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Res Ctr, Minist Educ High Grav Engn & Technol, Beijing, Peoples R China

来源：

AICHE JOURNAL | 2022年 / 68卷 / 02期

关键词：

composite; hierarchically porous structure; metal-organic frameworks; spray-drying; tannic acid adsorption; AQUEOUS-SOLUTION; REMOVAL; NANOPARTICLES; EQUILIBRIUM; KINETICS; CO2; MIL-101(CR); BEADS;

D O I：

10.1002/aic.17522

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Metal-organic frameworks (MOFs) have attracted much attention owing to their tailored pore environment and surface functionality. However, most of the currently reported MOFs are confined to small pore sizes (<5 nm), limiting their practical applications. Here, a facile and versatile strategy for rapid construction of hierarchically porous MOFs (HP-MOFs) by spray-drying is reported, in which presynthesized nanosized MOFs (N-MOFs) can be assembled to form MOF microspheres with meso/macropores resulting from the interspace among closely arranged N-MOFs. This strategy enables the construction of multicomponent HP-MOFs with various functions. As a proof of concept, we show that the adsorption for tannic acid (TA) can be significantly enhanced using HP-MIL-101(Cr). Particularly, HP-MIL-101-30 (30 represents the primary nanoparticle size) exhibits a record-high adsorption capacity (1175 mg g(-1)), and the adsorption rate of HP-MIL-101-30 is increased by 50% compared to that of N-MIL-101-30. These findings have important implications for the rapid construction of HP-MOFs, which is beneficial for the adsorption of large molecules.

引用

页数：13

共 43 条

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