Pregled bibliografske jedinice broj: 36729
Cathodic stripping square wave voltammetry of Cu(II)-oxine complexes. A mechanistic study
Cathodic stripping square wave voltammetry of Cu(II)-oxine complexes. A mechanistic study // Journal of electroanalytical chemistry (1992), 478 (1999), 1-2; 17-24 doi:10.1016/S0022-0728(99)00407-6 (međunarodna recenzija, članak, znanstveni)
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Naslov
Cathodic stripping square wave voltammetry of
Cu(II)-oxine complexes. A mechanistic study
Autori
Garay, Fernando ; Solis, V. ; Lovrić, Milivoj
Izvornik
Journal of electroanalytical chemistry (1992) (1572-6657) 478
(1999), 1-2;
17-24
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
copper ; oxine ; square-wave voltammetry ; adsorption ; mercury electrode
Sažetak
The reaction mechanism for the reduction of Cu(II)-oxine complexes on mercury electrodes is studied by cyclic voltammetry (CV) and square-wave voltammetry SWV). The quasi-reversible two- electrontransfer is analysed from a theoretical point of view according to the EEd and EdE mechanistic schemes based on an nalysis of the Butler-Volmer formalism. The effects of SWV parameters and solution composition are analysed. Fitting experimental data with theoretical curves allowed to evalution of charge transfer rate constants, as well as discrimunation between adsorbed or soluble species. In buffered solution at pH 7.7, a ks value of 0.8 s-1 was determined, for a one-step process involving adsorbed reactants and soluble product. In unbuffered solutions, a split in the redox wave is observed with ks values of 60 and 4 s-1 for each process, assigned to the reduction of CuOx+ and Cu(Ox)2, respectively.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
