Sheying Dong, Gaochao Suo, Nan Li
2016
Citations
1
Influential Citations
93
Citations
Quality indicators
Journal
Sensors and Actuators B-chemical
Abstract
Abstract A highly sensitive and simply electrochemical sensor for the determination of 2,4-dichlorophenol (2,4-DCP) based on metal–organic frameworks (MOFs) 1,3,5-benzenetricarboxylic acid copper [Cu3(BTC)2] modified carbon paste electrode has been developed. The composition and morphology of Cu3(BTC)2 were characterized by Fourier transform infrared spectrometry, X-ray diffraction, scanning electron microscopy and N2 adsorption–desorption isotherm. Meanwhile, the electrochemical performances were investigated by cyclic voltammetry and differential pulse voltammetry. Under the optimized conditions, the proposed sensor not only exhibited high selectivity toward 2,4-DCP in comparison with those in references, but also showed a wide linear range over 2,4-DCP concentration from 0.04 to 1.0 μM with a low detection limit of 9 nM, which attributed to the advantages of Cu3(BTC)2 such as large specific surface area, high adsorption capacity and good electron transfer efficiency. Furthermore, the sensor was successfully applied for the determination of 2,4-DCP in reservoir raw water samples with satisfactory results. With those remarkable performances, MOFs may provide a platform in the area of sensors, which could extend the scope of MOFs constructing electrochemical sensing devices and hold a great promise for routine sensing applications.