Fe–Zn film stripping voltammetry: Theoretical and experimental study

Barbosa, Lúcio L.; Brito, Gilberto Augusto de Oliveira; López, Marı́a C.; Broggi, R.L.; Carlos, I.A.

doi:10.1016/j.electacta.2005.01.048

Cited by 6 publications

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“…The electrodeposited FeZn films were electrochemically dissolved in a stripping solution of 1.0 M NH 4 Cl pH = 1.5 (acidified with HCl) and the stripping to deposition charge density ratios (q str /q dep ) were obtained for each electrodeposit [23][24][25][26][27].…”

Section: Methodsmentioning

confidence: 99%

Electrodeposition of zinc–iron alloy from an alkaline bath in the presence of sorbitol

et al. 2007

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The chronopotentiometric technique was used to analyze the electrodeposition of Fe-Zn film on a Pt electrode. Three different Fe 3+ /Zn 2+ molar ratios, Fe26.8 wt.%-Zn73.2 wt.%, Fe46 wt.%-Zn54 wt.% and Fe66.6 wt.%-Zn33.4 wt.%, were used in a solution containing sorbitol as the Fe 3+ -complexing agent, with a total concentration of the two cations of 0.20 M. Coloration of FeZn films were light gray, dull dark gray and bright graphite, depending on the Fe 3+ /Zn 2+ ratios in the deposition bath. The highest stripping to deposition charge density ratio was 47.5%, at 15 mA cm -2 in the Fe26.8 wt.%-Zn73.2 wt.% bath. Energy dispersive spectroscopy indicated that the codeposition type of Fe and Zn in the Fe26.8 wt.%-Zn73.2 wt.% and Fe46 wt.%-Zn54 wt.% baths was normal at all j d tested, while in the Fe66.6 wt.%-Zn33.4 wt.% bath there was a transitional current density from normal to equilibrium codeposition at 50 mA cm -2 . Scanning electron microscopy showed that Fe-Zn films of high quality were obtained from the Fe66.6 wt.%-Zn33.4 wt.% and Fe26.8 wt.%-Zn73.2 wt.% baths, since the films were smooth. X-ray analysis of the Zn-Fe films obtained at 15, 25 and 50 mA cm -2 , in the Fe26.8 wt.%-Zn73.2 wt.%, Fe46 wt.%-Zn54 wt.% and Fe66.6 wt.%-Zn33.4 wt.% plating baths, suggested the occurrence, in general, of a mixture of Fe 11 Zn 40 , Fe 4 Zn 9 , bFe, aFe, Fe 2 O 3 , Zn and PtZn alloys in the deposit.

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Section: Methodsmentioning

confidence: 99%

Electrodeposition of zinc–iron alloy from an alkaline bath in the presence of sorbitol

et al. 2007

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Determination of Iron: Electrochemical Methods

Lu¹,

Rees²,

Kabakaev³

et al. 2012

Electroanalysis

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Iron is an abundant element in the environment which plays an important role in environmental and biological systems. In particular, its essential function in photosynthesis has been seen as a limiting factor for phytoplanktons in ocean waters. Thus, sensitive speciation and determination of iron is of major interest, and many techniques have been established for analytical purposes. Electrochemical methods have been commonly explored due to their inexpensive, simple and rapid nature, with adsorptive stripping voltammetry (AdSV) being widely used due to its ability to complex and preconcentrate iron ions for ultrasensitive detection. This paper aims to present a review of recent determinations of trace iron using electrochemical methods.

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The electrochemistry of intermetallic compounds: A mini-review

Ivanova

2017

Electrochemistry Communications

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Fe–Zn film stripping voltammetry: Theoretical and experimental study

Cited by 6 publications

References 6 publications

Electrodeposition of zinc–iron alloy from an alkaline bath in the presence of sorbitol

Electrodeposition of zinc–iron alloy from an alkaline bath in the presence of sorbitol

Determination of Iron: Electrochemical Methods

The electrochemistry of intermetallic compounds: A mini-review

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