Producción Científica Profesorado

A Cu(II)-BTC Metal-Organic Framework Modified Carbon Paste Electrode and Its Application as Electrochemical Sensor for Methanol Determination



Alvarez Romero, Giaan Arturo

2022

J. Antonio Cruz-Navarro, L. Humberto Mendoza-Huizar, Verónica Salazar-Pereda, Claudia Romo-Gómez, J. Ángel Cobos-Murcia and Giaan A. Álvarez-Romero. A Cu(II)-BTC Metal-Organic Framework Modified Carbon Paste Electrode and Its Application as Electrochemical Sensor for Methanol Determination. J. Electrochem. Soc. 2022, 169, 037509.


Abstract


This work presents a novel electrochemical sensor for methanol, based on a Cu(II) Metal-Organic Framework. The copper (II) benzenetricarboxylic metal-organic framework (Cu-BTC) was synthesized in mild condition at room temperature, and the obtained crystals were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The obtained Cu-BTC was incorporated at different ratios (7, 15, 30 wt%) in carbon paste electrodes to determine its electrocatalytic activity in the absence and the presence of methanol. The electrodes were characterized by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). An anodic peak response toward methanol was observed at 1.25 V using 0.1 M NaOH as supporting electrolyte, with a maximum current density of 10 mA. Also, the oxidation signal of methanol in the presence of ethanol was studied by DPV. The quantitative analysis of methanol in the presence of ethanol using the modified electrode presented a LOD, LOQ and sensitivity values of 0.0511 mM, 0.1549 mM, and 19.8 mA mM?1 cm?2, respectively. The results demonstrated the high potential of Cu-BTC as part of electrochemical sensors for the determination of methanol in actual samples.



Producto de Investigación




Artículos relacionados

Determination of non-steroidal anti-inflammatory drugs in wastewaters by magnetic matrix solid phase...

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...

High-performance liquid magneto-chromatography

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

Silver and Silver Chloride Electrodeposits, an Alternative in the Construction of Ag/AgCl Solid Elec...

Sequential Injection Spectrophotometric Determination of Diclofenac in Urine and Pharmaceutical Form...

Determination of primary amino acids in wines by high performance liquid magneto-chromatography

Nucleation and Growth Kinetics of Electrodeposited Sulfate-Doped Polypyrrole: Determination of the D...

Potentiometric Behavior of Diverse Polypyrrole-sulphate Films Electro Synthesized on Graphite - Epox...

Determination of oxytetracycline in milk samples by polymer inclusion membrane separation coupled to...