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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Voltammetric Generation and Kinetic Stability of Nitro Anion Radical from Nitrofurazone in Ionic Liquids

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Author(s):
Chiavassa, Luisa D. [1] ; Camilo, Fernanda F. [2] ; Scalea, Mauro A. La [3]
Total Authors: 3
Affiliation:
[1] Univ Lisbon, Fac Ciencias, Grp Eletroquim Interfacial, Ctr Quim Estrutural, P-1749016 Lisbon - Portugal
[2] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Lab Mat Hibridos, Dept Quim, BR-09913030 Diadema, SP - Brazil
[3] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Lab Eletroquim & Eletroanal, Dept Quim, BR-09972270 Diadema, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 32, n. 4, p. 889-899, APR 2021.
Web of Science Citations: 0
Abstract

The nitrofurazone (NF) electrochemical reduction has been studied by cyclic voltammetry (CV) and square wave voltammetry (SWV) in non-aqueous medium using three different ionic liquids (IL): BMImTf(2)N, BMImBF(4) and BMMImTf(2)N, having a carbon fiber microelectrode as working electrode. In all of them, two reversible cathodic peaks were recorded for NF. Under higher frequency values, only one reversible cathodic peak was registered. The systems reversibility could also be observed by CV, since a reversible redox couple was registered for this reduction. The systems reversibility with product and reagent adsorptions on the electrode surface was confirmed and the electrons number involved in this reduction indicated the nitro-anion radical formation followed by its respective dianion. For the first reduction, the EC mechanism (an electrochemical step followed by a chemical one) was considered for the systems in aprotic medium, in which there was a probable second-order chemical reaction after the charge transfer process, being the kinetic constants calculated following the Olmstead and Nicholson model. (AU)

FAPESP's process: 18/20826-4 - SYNTHESIS AND PROPERTIES EVALUATION OF NANOPARTICLES SUPPORTED ON NON-MODIFIED CELLULOSE FILMS
Grantee:Fernanda Ferraz Camilo
Support Opportunities: Regular Research Grants