Promotion of Proton Conductivity by Encapsulation of Metal-Organic Polyhedra in Metal-Organic Frameworks

被引：8

作者：

Wang, Bin-Cheng ^{[1
,2
,3
]}

Feng, Zhi-Ying ^{[1
]}

Hao, Biao-Biao ^{[1
]}

Zhang, Chen-Xi ^{[1
,4
]}

Wang, Qing-Lun ^{[2
,3
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Chem Engn & Mat Sci, Tianjin 300457, Peoples R China

[2] Nankai Univ, Coll Chem, Minist Educ, Tianjin 300071, Peoples R China

[3] Nankai Univ, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China

[4] Tianjin Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2021年 / 27卷 / 47期

基金：

中国国家自然科学基金;

关键词：

encapsulation; metal-organic frameworks; metal-organic polyhedral; proton conductivity; LOW-HUMIDITY; MEMBRANES; PORES; OXIDE; MOFS;

D O I：

10.1002/chem.202101213

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A Zr-based metal-organic polyhedron (MOP) was self-assembled in a porous MOF host, DUT-68, successfully to synthesize MOP-1@DUT-68. The MOP guest (MOP-1) has a diameter of about 20 angstrom, larger than that of the square windows (pore sizes of similar to 14 angstrom) of DUT-68 but smaller than that of the rhombicuboctahedral cage (27.7 angstrom), which means that the migration and leaching of MOP-1 could be effectively prohibited if MOP-1 is encapsulated in the MOF ' s cavities. The proton conductivity of MOP-1@DUT-68 is 1.14x10(-3) S cm(-1) (at 80 degrees C under 98 % relative humidity), which is three orders of magnitude higher than that of DUT-68. Compared with MOP-1 subset of DUT-68, which was synthesized by impregnation, MOP-1@DUT-68 is more prone to form faster proton-conduction pathways and thus provides higher proton conductivity.

引用

页码：12137 / 12143

页数：7

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