Sulfonated Sub-Nanochannels in a Robust MOF Membrane: Harvesting Salinity Gradient Power

被引：38

作者：

Guo, Yi ^{[1
]}

Huang, Hubiao ^{[2
]}

Li, Zhuoyi ^{[1
]}

Wang, Xiaobin ^{[1
]}

Li, Peipei ^{[1
]}

Deng, Zheng ^{[1
,3
]}

Peng, Xinsheng ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Zheda Rd 38, Hangzhou 310027, Zhejiang, Peoples R China

[2] Univ Tokyo, Sch Engn, Dept Chem & Biotechnol, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

[3] Shenzhen Univ, Coll Optoelect Engn, Shenzhen Key Lab Laser Engn, Nanhai Rd 3688, Shenzhen 518060, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 38期

基金：

浙江省自然科学基金;

关键词：

heparin-threaded ZIF-8 membrane; rapid and selective ionic transport; salinity gradient power generation; low resistance; high output electric power; METAL-ORGANIC FRAMEWORK; SEPARATION;

D O I：

10.1021/acsami.9b13617

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We developed a robust, crack-free ultrathin zeolite- imidazole framework (ZIF-8) membrane in-built with a sulfonate-ion-containing polymer (ZIF(HeP)) via a vapor-assisted in situ conversion process. The sulfonated sub-nanochannels of the ZIF(HeP) membrane afforded a rapid and selective transport of Li' over counteranions and other alkali ions due to electrostatic repulsion and optimal transport kinetics of cation-sulfonate ion pairs. A salinity gradient power generator (SGPG) was built by using the ZIF(HeP) membrane as a cell separator coupled with a pair of Ag/AgCl porous membrane electrodes. At a salinity gradient of 10(5), such a power generator presented a significantly decreased internal resistance (25.6 Omega), three-order of magnitude lower than that reported previously, and an output power as high as 9.03 mu W.

引用

页码：35496 / 35500

页数：5

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