Functionalized Cadmium-Metal Organic Framework Materials with Azo Bonds for Highly Sensitive Electrochemical Detection of 4-Aminophenol
10.19756/j.issn.0253-3820.231343
- VernacularTitle:偶氮键修饰的镉基-金属有机框架高灵敏电化学传感器检测4-氨基苯酚
- Author:
Lu XU
1
;
Tian-Tian MA
;
Yi-Yan BAI
;
Jing SU
;
Yun-Long FU
;
Hai-Ying YANG
;
Wen-Juan JI
Author Information
1. 山西师范大学化学与材料科学学院,磁性分子与磁信息材料教育部重点实验室,太原 030032
- Keywords:
Metal-organic framwork materials;
Azo bonds;
Electrochemical sensor;
4-Aminophenol
- From:
Chinese Journal of Analytical Chemistry
2024;52(4):587-596
- CountryChina
- Language:Chinese
-
Abstract:
The presence of 4-aminophenol(4-AP)in wastewater from the pharmaceutical industry is a common occurrence due to its role as a byproduct or intermediate during the hydrolysis process of paracetamol metabolism,resulting in significant water pollution.Therefore,it is crucial to employ a straightforward and reliable analytical approach for detecting 4-AP in the environment.In this study,a specific type of metal-organic framework(MOF)material called[Cd4(ABTC)2(H2O)12]n(SXNU-4-Cd,H4ABTC=3,3′,5,5′-azobenzene tetracarboxylic acid)was successfully synthesized,which exhibited a unique two-dimensional layered structure consisting of three intertwined spiral chains forming a distinctive″twist braid″.These layers underwent π-π stacking,creating three-dimensional channels with azo bonds decorating the channel walls.This p-π interaction significantly enhanced the adsorption capacity of SXNU-4-Cd towards 4-AP,thereby improving its recognition sensitivity.The fabricated SXNU-4-Cd/GCE sensor showed high sensitivity towards 4-AP in the linear concentration range of 0.1-130 μmol/L,with a detection limit of 8.6 nmol/L,and also exhibited good anti-interference capability,reproducibility and stability.The SXNU-4-Cd/GCE sensor was successfully used for detecting 4-AP in lake water sample,with spiked recoveries of 95.9%-102.8%.This study introduced a novel technique that utilized pure Cd-MOFs to develop electrochemical sensor capable of effectively detecting 4-AP in water samples.
