Electrodeposition of bismuth from a trilon B-sulfosalicylate bath

Петрова, Т. П.; Zelenetskaya, K. V.; Rakhmatullina, I. F.; Shapnik, M. S.

doi:10.1134/s0033173206040096

Cited by 7 publications

(9 citation statements)

References 1 publication

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Section: 2mentioning

confidence: 99%

“…This phenomenon called "the negative difference effect" (NDE) [9][10][11][12][13][14][15][16] and more recently "the anodic hydrogen evolution" process 17,18 has been also observed for other metals than Mg such as Al, Li. [19][20][21][22] Despite the abundant literature on Mg corrosion and many models of Mg corrosion (such as: the formation of Mg(I) as an intermediate product, 23,24 the formation and breakdown of the partially protective film, 11,[25][26][27] the formation of hydride intermediates, [28][29][30][31][32] or the catalytic activity of alloying elements and noble metal impurities) 22,33,34 the mechanisms still remain unclear. 22,35 The univalent magnesium model was first considered as a one-step process and then a two-step mechanism was proposed, where, firstly, a dissolution of Mg leads to formation of an intermediate Mg + cation, which, then, undergoes a chemical reaction with water to form Mg 2+ and H 2 .…”

mentioning

confidence: 99%

“…This phenomenon called "the negative difference effect" (NDE) 9-16 and more recently "the anodic hydrogen evolution" process 17,18 has been also observed for other metals than Mg such as Al, Li. [19][20][21][22] Despite the abundant literature on Mg corrosion and many models of Mg corrosion (such as: the formation of Mg(I) as an intermediate product, 23,24 the formation and breakdown of the partially protective film, 11,[25][26][27] the formation of hydride intermediates, [28][29][30][31][32] formation of dark filiform patterns 13,16 and increase the hydrogen production in aqueous chloride solutions.12,15 Even a very low content of impurities (usually < 150 ppm in "pure" Mg) 41 can lead to formation of such surface film and the morphology of this film depends on electrolyte composition and Cl − concentration. 45,46 The effects of different alloy precipitates and alloy microstructure were widely studied in the case of Mg alloys [47][48][49][50][51][52][53][54][55] but not pure Mg.…”

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confidence: 99%

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Role of Segregated Iron at Grain Boundaries on Mg Corrosion

Mercier

Światowska

Zanna

et al. 2018

J. Electrochem. Soc.

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To elucidate the role of noble metal impurities on corrosion of Mg, 3D time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging in combination with X-ray photoelectron spectroscopy and optical microscopy measurements were carried out on Mg samples (99.9%) before and after Mg polarization at E OCP +0.5 V in 0.1 M NaCl. A significant segregation of Fe (and of Mn and Al) metallic impurities at grain boundaries (GBs) was observed on the Mg surface by 3D ToF-SIMS. A 3-step mechanism of Mg corrosion was proposed, including a catalytic effect of Fe segregated at the GBs on the hydrogen evolution reaction (HER). In the 1 st stage, the initiation of Mg corrosion is accompanied by the HER occurring over Fe impurities segregated at GBs leading to formation of small circular defects, and propagation with occurrence of dark filiform-like pattern corrosion enriched in Cl − . Magnesium and its alloys exhibiting interesting physico-chemical properties such as excellent wide range of mechanical properties at room temperature and low weight (1.7 g.cm −3 ), become good alternatives to aluminum and iron-based alloys in many industrial applications such as automobile, aerospace, energy storage or biomedicine. 1,2Mg and its alloys are spontaneously covered by an oxide/hydroxide layer.3 When exposed to aqueous solution, the oxide layer has a duplex structure consisting of an inner magnesium oxide and an outer porous hydroxide layer 4,5 with a possible presence of magnesium hydride (MgH 2 ).6 At ambient temperature, this oxide layer formed on the Mg (or Mg alloys) surfaces is protective. 1,7 In most aqueous environments (or high humidity) and in a large range of pH, (0-10) as inferred from the potential-pH diagram, this oxide/hydroxide layer is not stable and Mg undergoes dissolution.8 Thus, this is one of the most important limiting factors for applications of Mg and its alloys. Mg dissolution is accompanied by the hydrogen evolution reaction (HER), as the major cathodic reaction. The well-known increase of the HER rate under anodic polarization of Mg seems to be in contradiction with the kinetic models of charge transfer electrochemical reactions (Butler-Volmer equation), predicting that the cathodic current should decrease exponentially with increasing anodic potential. This phenomenon called "the negative difference effect" (NDE) 9-16 and more recently "the anodic hydrogen evolution" process 17,18 has been also observed for other metals than Mg such as Al, Li. [19][20][21][22] Despite the abundant literature on Mg corrosion and many models of Mg corrosion (such as: the formation of Mg(I) as an intermediate product, 23,24 the formation and breakdown of the partially protective film, 11,[25][26][27] the formation of hydride intermediates, [28][29][30][31][32] formation of dark filiform patterns 13,16 and increase the hydrogen production in aqueous chloride solutions.12,15 Even a very low content of impurities (usually < 150 ppm in "pure" Mg) 41 can lead to formation of such surface film and the morphology of this film depen...

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Section: 2mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Role of Segregated Iron at Grain Boundaries on Mg Corrosion

Mercier

Światowska

Zanna

et al. 2018

J. Electrochem. Soc.

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“…Bismuth electrodeposition could also be carried out in nitric acid, , sulfosalicylate, and deep eutectic solvents . Jiang et al produced metal bismuth with skeleton and strip-like shapes in a HNO 3 medium with the addition of EDTA.…”

Section: Introductionmentioning

confidence: 99%

Energy-Efficient and Green Extraction of Bismuth Metal in Methanesulfonic Acid-Based Membrane Electrochemical Systems

Chang,

Yang,

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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As the mainstream hydrometallurgical medium of bismuth sulfide concentrate, chloride/hydrochloric acid suffers from high volatility, strong corrosiveness, and inferior deposit quality. In this paper, methanesulfonic acid (MSA) with low volatility and high stability was adopted as the bismuth hydrometallurgical system, and the membrane electrochemical deposition method was proposed to extract bismuth metal from a bismuth-containing solution. The effects of additives, such as calcium lignosulfonate (CL), tetrabutylammonium chloride, βnaphthol, and lugalvan NES, on the morphology of bismuth deposits and electric energy consumption (EEC) were investigated in detail. The addition of CL as an additive could produce dense and flat bismuth deposits while the EEC is reduced simultaneously. Cyclic voltammetry and chronoamperometry analysis reveal the electrochemical behavior of bismuth deposition in the CL-assisted MSA medium, and the nucleation and growth of bismuth grains follow a 3D ″nucleation/growth″ mechanism. Under a cathode current density of 180 A/m 2 , a flat metallic bismuth deposit (purity > 99.96%) is produced in the presence of 0.5 g/L CL. The cathodic current efficiency (CCE) and EEC of membrane electrodeposition are 98.25% and 705 kWh/t Bi, respectively. Compared with chloride/hydrochloric acid, the bismuth membrane electrodeposition process in the CL-assisted MSA system has the advantages of being energy-saving, green, and safe, and it has a good application prospect in the field of bismuth hydrometallurgy.

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“…Much of previous studies of the electrodeposition of Bi films from nitrate, perchlorate, lactate, silicate, sulfate and pyrophosphate electrolytes. [14][15][16][17][18][19] Highly textured Bi films with 1 to 15 μm thick have been electrodeposited onto semiconductor substrates, 20,21 noble metals (such as evaporated Au and polycrystalline Cu) 14,22 and glassy carbon electrode.…”

Section: Introductionmentioning

confidence: 99%

Nucleation and Growth of Bismuth Electrodeposition from Alkaline Electrolyte

Zhou¹,

Dai²,

Zhang³

et al. 2012

Bulletin of the Korean Chemical Society

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The early stages of bismuth (Bi) electrodeposition on glass carbon electrode from alkaline electrolyte were studied by cyclic voltammetry, chronoamperometry, scanning electron microscopy, atomic force microscopy and X-ray diffraction. The CV analysis showed that the electrodeposition of Bi was determined to be quasireversible process with diffusion controlled. The current transients for Bi electrodeposition were analyzed according to the Scharifker-Hills model and the Heerman-Tarallo model. It can be concluded that the nucleation and growth mechanism was carried out under a 3D instantaneous nucleation, which was confirmed by SEM analysis. The kinetic growth parameters were obtained through a nonlinear fitting. In addition, the Bi film obtaining at −0.86 V for 1 hour was of compact and uniform surface with good smoothness, small roughness and a very high purity. The Bi film were indexed to rhombohedral crystal structure with preferred orientation of (0 1 2) planes to growth.

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Electrodeposition of bismuth from a trilon B-sulfosalicylate bath

Cited by 7 publications

References 1 publication

Role of Segregated Iron at Grain Boundaries on Mg Corrosion

Role of Segregated Iron at Grain Boundaries on Mg Corrosion

Energy-Efficient and Green Extraction of Bismuth Metal in Methanesulfonic Acid-Based Membrane Electrochemical Systems

Nucleation and Growth of Bismuth Electrodeposition from Alkaline Electrolyte

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