电化学
胺气处理
氢键
分子
选择性
乙酰胺
热液循环
化学
电化学气体传感器
无机化学
材料科学
电极
物理化学
有机化学
化学工程
催化作用
工程类
作者
Xiao-Qin Wu,Ze-Yu Yang,Xiao-Jie Sang,Xinxin Tian,Xuehong Wei
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:51 (44): 16861-16869
摘要
A 2D Co-MOF, {[Co2(L2-)2(bipy)](DMA)·2H2O}n (Co-1, H2L = 2,5-thienedioic acid; bipy = 2,2'-bipyridine; DMA = N,N'-dimethyl acetamide), was synthesized by hydrothermal method. Co-1 has excellent air stability. When modifying the surface of a glassy carbon electrode (GCE) with Co-1, the obtained electrochemical senor Co-1/GCE shows excellent sensitivity towards 1,3-dinitrobenzene (m-DNB) and 2,4-dinitroaniline (2,4-DNA), although the electrochemical conductivity of Co-1 is not that good. The detection limits were as low as 0.0286 μM and 0.161 μM, respectively. DFT studies showed that the main interaction between Co-1 and the guest molecules is via hydrogen bonding, formed by the -NO2 group and the coordinated H2O molecule from the Co-1 skeleton. Furthermore, the characteristic signals of both m-DNB and 2,3-DNA can still be observed in a mimicked industrial waste-water system containing 17 kinds of organic interferents, indicating high selectivity of the Co-1/GCE sensor.
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