Electrochemistry of gallium in thiocyanate solutions of high ionic strength

Iwasinska, Anna; Stojek, Zbigniew; Kublik, Zenon; Osteryoung, Janet

doi:10.1016/s0022-0728(84)80283-1

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…Iwasinska et al 48) measured the formal potential of Ga(III)/Ga(0) in a 4 M NaClO 4 solution with a pH of 2.0 at 25 o C. The potential value measured using gallium amalgam was −0.731 V vs. SCE. The authors observed that the increase in SCN − concentration caused a pronounced increase in cathodic current and suggested that the actual catalytic species responsible for reduction of Ga(III) might be adsorbed reduced hydrogen that was catalyzed by SCN − .…”

Section: Redox Behavior Of Gallium In Aqueous Solutionmentioning

confidence: 99%

Electrochemistry of Gallium

Chung¹,

Lee²

2013

J. Electrochem. Sci. Technol

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Gallium is an important element in the production of a variety of compound semiconductors for optoelectronic devices. Gallium has a low melting point and is easily oxidized to give oxides of different compositions that depend on the conditions of solutions containing Ga. Gallium electrode reaction is highly irreversible in acidic media at the dropping mercury electrode. The passive film on a gallium surface is formed during anodic oxidation of gallium metal in alkaline media. Besides, some results in published reports have not been consistent and reproducible. An increase in the demand of intermetallic compounds and semiconductors containing gallium gives rise to studies on electrosynthesis of them and an increase of gallium concentration in the environment with various application of gallium causes the development of electroanalysis tools of Ga. It is required to understand the electrochemistry of Ga and to predict the electrochemical behavior of Ga to meet these needs. Any review papers related to the electrochemistry of gallium have not been published since 1978, when the review on the subject was published by Popova et al. In this study, the redox behavior, anodic oxidation, and electrodeposition of gallium, and trace determination of gallium by stripping voltammetries will be reviewed.

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Section: Redox Behavior Of Gallium In Aqueous Solutionmentioning

confidence: 99%

Electrochemistry of Gallium

Chung¹,

Lee²

2013

J. Electrochem. Sci. Technol

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show abstract

“…The bare GCE surface and normal mercury film thickness, generally used in analysis [14] by spiking Hg(II) solution, providing 2 · 10 À4 g/l concentration of Hg(II) ions in supporting electrolyte medium could not show any stripping peak of gallium oxidation indicating no deposition of gallium because reduction of gallium is a difficult electrode process [15] due to three-electron transfer, inert pair effect and high hydration enthalpy. A thick mercury film providing 1 · 10 À3 g/l concentration of Hg(II) ions in supporting electrolyte medium was found to be most suitable for analysis showing the highest stripping currents for gallium because of sufficient accumulation of Ga(III) in relatively large amount of mercury.…”

Section: Effect Of Mercury Film Thicknessmentioning

confidence: 99%