Electroanalytical study of selenium(+IV) at a carbon paste electrode with electrolytic binder and electroactive compound incorporated

Espinosa, Ana; Tascón, M.L.; Vázquez, M.D.; Batanero, P. Sánchez

doi:10.1016/0013-4686(92)85052-m

Cited by 40 publications

(19 citation statements)

References 19 publications

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“…Espinosa et al [32] already mentioned this reaction. Since the formation of red Se would disturb the deposition process and pollute the cell, it absolutely must be avoided during EC-ALE.…”

Section: Resultsmentioning

confidence: 99%

Underpotential deposition of selenium and antimony on gold

Chen

Wang

Pradel

et al. 2015

J Solid State Electrochem

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International audienceThe present paper is a detailed study on the deposition of Sb2Se3 thin films by electrochemical atomic layer epitaxy (EC-ALE). The related electrochemical aspects have been deeply investigated by means of cyclic voltammetry, anodic potentiodynamic scanning, and coulometry. The UPD layer of Se was obtained by first depositing both UPD Se and a small amount of bulk Se and then stripping the redundant bulk Se in blank solutions. A "two times rinsing" method was developed to avoid the formation of red Se during the rinsing process. The deposition parameters were determined for the first three EC-ALE cycles, and from these values, a nanofilm containing Sb and Se atoms has been obtained. By scanning electron microscopy and coulometry, it was shown that the deposit is compact and it has a stoichiometry very close to that of Sb2Se3. The Raman spectral analyses show that the deposit is made of Sb2Se3 nanoclusters

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“…Espinosa et al [32] already mentioned this reaction. Since the formation of red Se would disturb the deposition process and pollute the cell, it absolutely must be avoided during EC-ALE.…”

Section: Resultsmentioning

confidence: 99%

Underpotential deposition of selenium and antimony on gold

Chen

Wang

Pradel

et al. 2015

J Solid State Electrochem

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“…The different pathways of the process of selenium deposition are possible and are presented in the literature [36][37][38][39][40][41][42][43][44][45][46][47]. First of all selenium can be reduced according to the scheme: Either…”

Section: Selenium Depositionmentioning

confidence: 99%

Analysis of the mechanism for electrodeposition of the ZnSe phase on Cu substrate

Kowalik

Fitzner

2009

Journal of Electroanalytical Chemistry

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“…These peaks have been associated with the reduction of elemental Se to selenide which is subsequently oxidized to regenerate Se. 16 It should be stressed that a coulometric analysis in all cases yielded a charge under the oxidation peak that was below a monolayer. In fact, similar features were also observed after the data in Panel B, Fig.…”

mentioning

confidence: 95%

The Reactivity of Selenite toward Methyl Viologen in Mildly Acidic Aqueous Solutions

Han

Feng

Scherson

2017

J. Electrochem. Soc.

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The chemical and electrochemical reactivity of selenite, SeO 3 2− , toward methyl viologen, MV 2+ , has been examined in mildly acidic (pH 4) aqueous electrolytes. Solutions containing these two species heated at 60 • C for ca. 2 hours, were found to yield both 1-methyl-[4,4'-bipyridine]-1-ium chloride and elemental Se as the main reaction products, as evidenced from information derived from mass spectrometric and spectroscopic techniques. Cyclic voltammetric measurements recorded in acetate buffer (pH 4) with a glassy carbon, GC, electrode bearing a self-assembled monolayer, SAM, of N-ethyl-N'-octadecyl-4,4'-bipyridinium (EOB), which had been exposed to a 100 mM SeO 3 2− solution in aqueous acetate buffer (pH 4) for over 200 min and then rinsed with ultrapure water, displayed a significantly smaller redox peak ascribed to the reduction of the viologen moiety in the EOB SAM. This observation is consistent with the loss of the redox active species within the layer and supports the view that SeO 3 2− can cleave the N-C bond in EOB leading to the release of the viologen group into the solution. Cyclic voltammetric experiments involving a freshly prepared EOB SAM on GC in 1 mM SeO 3 2− in the same buffer yielded a large reduction current with an onset potential virtually identical to that associated with the reduction of the EOB SAM in SeO 3 2− -free solutions. On this basis, the extraordinary shift in the onset of SeO 3 2− reduction induced by the presence of MV 2+ in the same electrolyte reported by Koshikumo et al. [Electrochemistry (Tokyo, Jpn.), 81(5), 350 ( 2013)], may be explained by invoking formation of MV 2+ aggregates on the GC surface in amounts too small to be detected by conventional voltammetric techniques.

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Electroanalytical study of selenium(+IV) at a carbon paste electrode with electrolytic binder and electroactive compound incorporated

Cited by 40 publications

References 19 publications

Underpotential deposition of selenium and antimony on gold

Underpotential deposition of selenium and antimony on gold

Analysis of the mechanism for electrodeposition of the ZnSe phase on Cu substrate

The Reactivity of Selenite toward Methyl Viologen in Mildly Acidic Aqueous Solutions

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