Analysis of growth mechanisms and microstructure evolution of Pb+2 minor concentrations by electrodeposition technique

Rebey, A.; Hamdi, Ridha; Hammami, Bèchir

doi:10.1140/epjp/s13360-022-02345-y

Cited by 3 publications

(1 citation statement)

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“…It allows nanostructures to be deposited with a high degree of control [ 15 , 16 ]. The electrodeposition process is either totally ohmic-regulated or mixed ohmic-diffusion controlled depending on the concentration of Pb (II) ions [ 17 , 18 ]. Chen et al [ 19 ] used a potentiostatic technique to depose Zn and Pb at varied temperatures and potentials into Cu foil.…”

Section: Introductionmentioning

confidence: 99%

Physical, Static, and Kinetic Analysis of the Electrochemical Deposition Process for the Recovery of Heavy Metal from Industrial Wastewater

et al. 2023

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Through the electrodeposition technique, toxic metals in wastewater can be removed and deposited on a chosen substrate with excellent selectivity. In this work, we use this technique to extract lead cations from simulated wastewater by using fluorine-doped tin oxide (FTO) substrate at various temperatures. In situ tracking of lead nucleation at advanced stages has been achieved by chronoamperometry. According to the experimental results, the theoretical models developed to study the kinetic growth of lead deposits in 2D and 3D are in good agreement. Nucleation rate and growth rate constants, for example, were found to be strongly influenced by temperature. Cottrell’s equation is used to calculate the diffusion coefficient. X-ray diffraction, scanning electron microscopy, and energy-dispersiveX-ray techniques were used to investigate and characterize the lead deposits. The reported results could provide insight into the optimization of electrodeposition processes for heavy metal recovery from wastewater and electronic wastes.

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Section: Introductionmentioning

confidence: 99%

Physical, Static, and Kinetic Analysis of the Electrochemical Deposition Process for the Recovery of Heavy Metal from Industrial Wastewater

et al. 2023

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Self‐Standing Metal Foam Catalysts for Cathodic Electro‐Organic Synthesis

Moreno‐García,

Gálvez‐Vázquez,

Prenzel

et al. 2023

Advanced Materials

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Although electro‐organic synthesis is currently receiving renewed interest because of its potential to enable sustainability in chemical processes to value‐added products, challenges in process development persist: For reductive transformations performed in protic media, an inherent issue is the limited choice of metallic cathode materials that can effectively suppress the parasitic hydrogen evolution reaction (HER) while maintaining a high activity towards the targeted electro‐organic reaction. Current development trends are aimed at avoiding the previously used HER‐suppressing elements (Cd, Hg and Pb) because of their toxicity. Here, we report the rational design of highly porous foam‐type binary and ternary electrocatalysts with reduced Pb content. Optimized cathodes are tested in electro‐organic reductions using an oxime to nitrile transformation as a model reaction relevant for the synthesis of fine chemicals. Their electrocatalytic performance is compared with that of the model CuSn7Pb15 bronze alloy that has recently been endorsed as the best cathode replacement for bare Pb electrodes. All developed metal foam catalysts outperform both bare Pb and the CuSn7Pb15 benchmark in terms of chemical yield and energetic efficiency. Moreover, post‐electrolysis analysis of the crude electrolyte mixture and the cathode's surfaces through ICP‐MS and SEM, respectively, reveal the foam catalysts’ elevated resistance to cathodic corrosion.This article is protected by copyright. All rights reserved

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In Situ Electrodeposition of Pb and Ag Applied on Fluorine Doped Tin Oxide Substrates: Comparative Experimental and Theoretical Study

et al. 2022

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A comparison between lead and silver electrodeposition onto fluorine-doped tin oxide (FTO) electrodes from nitrate solution was investigated in this work. Chronoamperometry has been used as an in situ technique to track the dynamics of the electrodeposition during advanced nucleation phases. The experimental results are correlated with a theoretical evaluation. It has shown that they have a strong correlation with each other. After that, the obtained deposits are characterized and compared as well by X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX), scanning electron microscopy (SEM), and impedance spectroscopy. The data reflects the effect of the material under investigation on current density, deposition density, and dielectric properties. Additionally, the electrodeposition approach (a two-in-one technique) can be followed in order to make well-controlled thin films that can be used for various purposes in addition to recovering heavy metals from wastewater.

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Analysis of growth mechanisms and microstructure evolution of Pb+2 minor concentrations by electrodeposition technique

Cited by 3 publications

References 46 publications

Physical, Static, and Kinetic Analysis of the Electrochemical Deposition Process for the Recovery of Heavy Metal from Industrial Wastewater

Physical, Static, and Kinetic Analysis of the Electrochemical Deposition Process for the Recovery of Heavy Metal from Industrial Wastewater

Self‐Standing Metal Foam Catalysts for Cathodic Electro‐Organic Synthesis

In Situ Electrodeposition of Pb and Ag Applied on Fluorine Doped Tin Oxide Substrates: Comparative Experimental and Theoretical Study

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