Proton conduction and impedance sensing of a highly stable copper-organic framework from imidazole dicarboxylate

被引：23

作者：

Chen, Wanyao ^{[1
]}

Yang, Chenglin ^{[1
]}

Yu, Shihang ^{[1
]}

Li, Zifeng ^{[1
]}

Li, Gang ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China

来源：

POLYHEDRON | 2019年 / 158卷

基金：

中国国家自然科学基金;

关键词：

MOFs; imidazole dicarboxylic; Proton conductivity; Ammonia identification; Crystal structure; LUMINESCENT SENSOR; WATER; EXPOSURE; MOFS;

D O I：

10.1016/j.poly.2018.11.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We have successfully synthesized a novel one-dimensional MOF, [Cu-4(HDMPhIDC)(4)(H2O)(4)](n) (1) by solvothermal method with the ligand 2-(3,4-dimethyl)phenyl-4,5-imidazole dicarboxylic acid (H3DMPhIDC). After analyzing its crystal structure, we have verified water stability, acid-base stability and adsorption properties of 1. We have measured the proton conductivity of 1 under water vapor and found the proton conductivity of 1 being 2.58 x 10(-5) S.cm(-1) at 98% relative humidity (RH) and 100 degrees C. Interestingly, MOF 1 shows good ammonia identification. The minimum ammonia sensing concentration is 10 ppm to be recognized by 1 at 25 degrees C. The lower the RH is, the more apparent the identification for ammonia is. When RH is 85% and the ammonia concentration in the system increases from 0 to 60 ppm, the impedance value of 1 is reduced from 4.29 x 10(8) to 1.07 x 10(6) Omega with high response of 39993%. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：377 / 385

页数：9

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