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Bozzini, Benedetto; Fanigliulo, Ameriga

doi:10.1023/a:1020907915397

Cited by 41 publications

(34 citation statements)

References 23 publications

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“…[3]). The absolute value of the Stark-slope for Au in this case, where an excess of free CN À is present, is quite similar to that observed with polycrystalline electrodes in contact with aqueous solutions containing KCN [4], but it is remarkably higher than that observed with baths containing only the cyanocomplex [5]. Coadsorption effects have been nevertheless shown to increase the value of the Stark-slope [6].…”

Section: Resultssupporting

confidence: 79%

A SERS investigation of the electrodeposition of Ag–Au alloys from free-cyanide solutions – part II

Bozzini

Gaudenzi²,

Mele

2004

Journal of Electroanalytical Chemistry

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Section: Resultssupporting

confidence: 79%

A SERS investigation of the electrodeposition of Ag–Au alloys from free-cyanide solutions – part II

Bozzini

Gaudenzi²,

Mele

2004

Journal of Electroanalytical Chemistry

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“…Therefore, metastably adsorbed Cl ) is expected also for potentials more cathodic then the point of zero charge (PZC) (about )200 mV [31]). A similar behaviour was demonstrated for pseudohalides under cognate electrochemical conditions [32]. The cathodic surface concentration is expected to be enhanced by reduction and mass-transport rates.…”

Section: Resultssupporting

confidence: 66%

Electrodeposition of Cu from Acidic Sulphate Solutions in the Presence of PEG: An Electrochemical and Spectroelectrochemical Investigation – Part I

et al. 2006

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This paper deals with the effects of PEG during Cu electrodeposition from an acidic sulphate solution. This investigation was carried out with electrochemical and spectroelectrochemical techniques. Potentiostatically grown layers were examined by scanning electron microscopy. Adsorption of PEG on the growing Cu surface can be inferred from electrokinetic, SERS and morphological evidence: variations of the estimated exchange current density, qualitative and quantitative differences in the potentiostatic transients, changes on the cathodic current efficiency, effects on the three-dimensional crystallisation mode under both compact and dendritic growth conditions, appearance of surface-enhanced PEG-related Raman bands. SERS spectra revealed cathodic reactivity of adsorbed PEG.

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“…Note that the oxidized copper (in the spinel) cannot produce SERS effect. On the other hand, the intense band at 2169 cm -1 may be attributed to the formation of Au-CN − and/or Au(CN) 2 − complex [54,55], prior to CN − oxidation, at uncovered parts of the roughened support [44]. (2120 -2148 cm -1 ) remains on the spectrum (Figure 5b-c).…”

Section: In Situ Raman Spectroscopy Study Of Cn -Electro-oxidationmentioning

confidence: 99%

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Berenguer

Rosa-Toro

Quijada

et al. 2017

Applied Catalysis B: Environmental

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Copper and copper oxides are well-known excellent catalysts in several chemical processes, but their low mechanical and electrochemical stability restrict their direct utilization as electrodes in electrolytic processes. In this work, the incorporation of copper into cobalt oxide (Cu x Co 3-x O 4 ) is presented as an excellent approach to obtain highly active and robust copper-based electrocatalysts. Particularly, the electrocatalytic performance of Ti-supported Cu x Co 3-x O 4 electrodes (with 0 ≤ x ≤ 1.5) has been studied for the oxidation of cyanide in alkaline media.Cyclic voltammetry and electrolysis runs show an outstanding effect of Cu on the activity, efficiency and kinetics of spinel Cu x Co 3-x O 4 electrodes for CN − electro-oxidation. Despite being active oxides with high activity towards water oxidation, copper saturated (x = 1.0) and oversaturated (x = 1.5) spinels exhibit unprecedented 100 % current efficiencies for the electrooxidation of CN − in aqueous electrolyte. In-situ surface enhanced Raman spectroscopy (SERS) reveals the specific adsorption of CN − ions on surface Cu species to be involved in the electrocatalytic oxidation mechanism. This electrocatalytic activity has been attributed to surface Cu(II) in the spinel lattice. Furthermore, the Cu x Co 3-x O 4 electrodes also display high

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Untitled

Cited by 41 publications

References 23 publications

A SERS investigation of the electrodeposition of Ag–Au alloys from free-cyanide solutions – part II

A SERS investigation of the electrodeposition of Ag–Au alloys from free-cyanide solutions – part II

Electrodeposition of Cu from Acidic Sulphate Solutions in the Presence of PEG: An Electrochemical and Spectroelectrochemical Investigation – Part I

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

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