Electrochemical behavior of tin anode in ascorbic acid solutions

Boraei, Nobl F. El; Rehim, Sayed S. Abd El

doi:10.1016/j.matchemphys.2018.05.040

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…In Sol. A, the region of active Sn dissolution observed at low potentials is followed by a narrow semi-passive region [ 26 ], characterized by lower anodic current density values ( Figure 1 c), due to the presence of a thin film of tin oxide on the electrode surface [ 27 ]. The passivity breakdown observed at −0.32 V vs. Ref could be related to the pitting induced by Br − ions at the oxide–electrolyte interface [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

Dissolution of Metals in Different Bromide-Based Systems: Electrochemical Measurements and Spectroscopic Investigations

et al. 2020

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The dissolution of the main metals (Cu, Zn, Sn, Pb and Fe) found in waste printed circuit boards (WPCBs) was investigated by electrochemical corrosion measurements (potentiodynamic polarization and electrochemical impedance spectroscopy (EIS)) in different bromide-based systems that could be used as lixiviants in hydrometallurgical route of metals recovery. The analysis of the corrosion products was carried out by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) measurements. All measurements showed that the addition of bromine in the electrolyte favors to great extents the dissolution process of all studied metals as compared to bromine-free electrolytes. In the investigated experimental conditions, the highest dissolution rates of the metals were obtained in acidic KBr solution containing 0.01 mol/L bromine and they decreased in the following order: Zn >> Sn > Pb > Fe > Cu. The XRD and XPS chemical assessment allowed the identification of the dissolution products formed on the metallic surfaces after exposure to the electrolytes. They consisted mainly of oxides in the case of Cu, Zn, Sn and Fe, while the presence of PbBr2 was also noticed on the lead surface. Based on the results of EIS and surface investigations, several models explaining the corrosion behavior of the metals were proposed and discussed. The obtained results demonstrate that all studied metals could be successfully leached using brominated solutions, providing a viable alternative for the selective and efficient recovery of the base metals from WPCBs through a multi-step hydrometallurgical processing route.

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Section: Resultsmentioning

confidence: 99%

Dissolution of Metals in Different Bromide-Based Systems: Electrochemical Measurements and Spectroscopic Investigations

et al. 2020

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“…A wide-ranging variety of tin corrosion inhibitors such as different oils, epoxy phenolic lacquers, Sodium dodecyl-sulfate, amino acids, etc. were investigated and demonstrated effectiveness against tin corrosion [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Corrosion Inhibition Performance and Adsorption Thermodynamics of Hydrogen Phosphate (HPO₄²⁻) and Molybdate (MoO₄²⁻) Oxyanions on Tin in Maleic Acid

et al. 2021

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The influence of hydrogen phosphate (HPO42−) and molybdate ions (MoO42−) on the behavior of tin corrosion in 0.2 M maleic acid was compared using experimental and theoretical techniques. The experimental studies consisted of the electrochemical investigations (potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)), along with the surface analytical techniques (SEM and EDX). Additionally, the theoretical analysis (the chemical quantum computations at MP4/SDD level of theory in the aqueous phase), was conducted. The experimental outcomes illustrated that the inhibition efficiency (η%) increases with the concentration of the inhibitors, reaching 88 % and 81 % at 2×10−2 M concentration of MoO42− and HPO42−, respectively. The potentiodynamic polarization curves revealed that HPO42− performance is a cathodic‐type inhibitor, while MoO42− shows a mixed‐type behavior. The increase in temperature decreased the η% values of both inhibitors. Based on surface analysis and thermodynamic study, the presence of the two inhibitors formed protective films on the tin surface through a physisorption mechanism. The chemical quantum computations using the complete fourth‐order Møller Plesset perturbation theory (MP4 with SDD basis) method results outlined the favorable affinity of the investigated inorganic inhibitors to interact with the tin surface, which interprets the well‐observed inhibition efficiencies.

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Modelling Salt Film During Localized Corrosion of Steel in Aqueous Chloride Solution

Salleh

Ekhwan

Mortadha

2022

Lecture Notes in Mechanical Engineering

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Electrochemical behavior of tin anode in ascorbic acid solutions

Cited by 10 publications

References 24 publications

Dissolution of Metals in Different Bromide-Based Systems: Electrochemical Measurements and Spectroscopic Investigations

Dissolution of Metals in Different Bromide-Based Systems: Electrochemical Measurements and Spectroscopic Investigations

Assessment of Corrosion Inhibition Performance and Adsorption Thermodynamics of Hydrogen Phosphate (HPO₄²⁻) and Molybdate (MoO₄²⁻) Oxyanions on Tin in Maleic Acid

Modelling Salt Film During Localized Corrosion of Steel in Aqueous Chloride Solution

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Electrochemical behavior of tin anode in ascorbic acid solutions

Cited by 10 publications

References 24 publications

Dissolution of Metals in Different Bromide-Based Systems: Electrochemical Measurements and Spectroscopic Investigations

Dissolution of Metals in Different Bromide-Based Systems: Electrochemical Measurements and Spectroscopic Investigations

Assessment of Corrosion Inhibition Performance and Adsorption Thermodynamics of Hydrogen Phosphate (HPO42−) and Molybdate (MoO42−) Oxyanions on Tin in Maleic Acid

Modelling Salt Film During Localized Corrosion of Steel in Aqueous Chloride Solution

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Assessment of Corrosion Inhibition Performance and Adsorption Thermodynamics of Hydrogen Phosphate (HPO₄²⁻) and Molybdate (MoO₄²⁻) Oxyanions on Tin in Maleic Acid