This paper investigates the electrochemical properties of a new Cu(II)-based metal-organic framework (MOF). Noted as Cu-YBDC, it is built upon a linker containing the propargyl carbamate functionality and immobilized on a glassy carbon electrode by drop-casting (GC/Cu-YBDC). Afterward, GC/Cu-YBDC was treated with HAuCl4 and the direct electro-deposition of Au nanoparticles was carried at 0.05 V for 600 s (GC/Au/Cu-YBDC). The performance of both electrodes towards nitrite oxidation was tested and it was found that GC/Au/Cu-YBDC exhibited a better electrocatalytic behavior toward the oxidation of nitrite than GC/Cu-YBDC with enhanced catalytic currents and a reduced nitrite overpotential from 1.20 to 0.90 V. Additionally GC/Au/Cu-YBDC showed a low limit of detection (5.0 µM), an ultrafast response time (<2 s), and a wide linear range of up to 8 mM in neutral pH.

A cu(Ii)-mof based on a propargyl carbamate-functionalized isophthalate ligand as nitrite electrochemical sensor

Cassani M. C.
Primo
;
Castagnoli R.;Gambassi F.;Nanni D.;Ragazzini I.;Boanini E.;Ballarin B.
Ultimo
2021

Abstract

This paper investigates the electrochemical properties of a new Cu(II)-based metal-organic framework (MOF). Noted as Cu-YBDC, it is built upon a linker containing the propargyl carbamate functionality and immobilized on a glassy carbon electrode by drop-casting (GC/Cu-YBDC). Afterward, GC/Cu-YBDC was treated with HAuCl4 and the direct electro-deposition of Au nanoparticles was carried at 0.05 V for 600 s (GC/Au/Cu-YBDC). The performance of both electrodes towards nitrite oxidation was tested and it was found that GC/Au/Cu-YBDC exhibited a better electrocatalytic behavior toward the oxidation of nitrite than GC/Cu-YBDC with enhanced catalytic currents and a reduced nitrite overpotential from 1.20 to 0.90 V. Additionally GC/Au/Cu-YBDC showed a low limit of detection (5.0 µM), an ultrafast response time (<2 s), and a wide linear range of up to 8 mM in neutral pH.
2021
Cassani M.C.; Castagnoli R.; Gambassi F.; Nanni D.; Ragazzini I.; Masciocchi N.; Boanini E.; Ballarin B.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/832524
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