Synthesis, structure, optical and electrochemical properties of the lead sulfate-lead dioxide-lead glasses and vitroceramics

Rada, S.; Rus, L.; Rada, M.; Culea, E.; Aldea, N.; Stan, Sergiu-Dan; Suciu, Ramona-Crina; Bot, A.

doi:10.1016/j.ssi.2015.03.016

Cited by 24 publications

(6 citation statements)

References 31 publications

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“…Given the above analysis, to further understand the lead sulfate conversion, FTIR spectroscopy was executed on specimens with different reaction times (Figure ). Infrared spectra show a band ascribed to SO 4 2– , , which was related to 597 and 1047 cm –1 in the measured results, while the bands located at about 629 and 964 cm –1 were attributed to SO 3 2– . , At advanced milling times, the SO 4 2– and SO 3 2– vibration peaks disappeared, providing clear evidence of lead sulfate reduction. Such a result supports the reduction mechanism that lead sulfate was converted into lead and iron sulfate.…”

Section: Resultssupporting

confidence: 50%

A Facile and Environmentally Friendly Approach for Lead Recovery from Lead Sulfate Residue via Mechanochemical Reduction: Phase Transformation and Reaction Mechanism

Che

Zhang

Liu

et al. 2021

ACS Sustainable Chem. Eng.

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Lead sulfate residue (LSR) is an important secondary lead resource also categorized as a hazardous waste, which has gained great attention in clean and sustainable utilization technology due to the shortage of primary resources and environmental pollution. The current methods for LSR treatment involve a potential environmental risk including emission of SO x gas and generation of waste acids and alkali. Herein, an environmentally friendly method is proposed for treating LSR, by which lead was reduced under ambient conditions via mechanical ball milling using iron powder as the reductant. The phase transformation of lead was analyzed by X-ray diffraction, scanning electron microscopy/energy-dispersive X-ray spectrometry, Fourier transform infrared, and X-ray photoelectron spectroscopy, revealing that the reduction time, rotation speed, mass ratio of ball to material (B/M), and iron powder dosage positively influenced the reduction of lead sulfate. The highest lead sulfate reduction efficiency of 99.9% was obtained under optimum conditions: rotation speed of 300 rpm, reduction time of 2 h, B/M of 15 g/g, and 1.5 times the theoretical dosage of iron powder. The generated ferrous sulfate was subsequently removed by water washing, and excess iron powder was separated by melting, accompanied by metallic lead produced with a high purity of 99.2%. This process is simple and environmentally friendly, showing good potential for industrial application.

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Section: Resultssupporting

confidence: 50%

A Facile and Environmentally Friendly Approach for Lead Recovery from Lead Sulfate Residue via Mechanochemical Reduction: Phase Transformation and Reaction Mechanism

Che

Zhang

Liu

et al. 2021

ACS Sustainable Chem. Eng.

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“…c A shoulder band appeared at about 710 cm -1 in all spectra, but in the spectrum of the SGC, it appeared as a single one. This band can be attributed to symmetric stretching vibrations of Si-O-Si bridging bonds [22] as well as to the stretching vibrations of V-O-V [23] in addition to some S-O-S stretching vibration [24]. d A broad band appeared at about 940 cm -1 in the spectra of glasses only (sulfur-free and sulfur-doped), where it de-convoluted into two different bands in the spectra of the glass-ceramic samples to be at 870 and 1080 cm -1 .…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

“…d A broad band appeared at about 940 cm -1 in the spectra of glasses only (sulfur-free and sulfur-doped), where it de-convoluted into two different bands in the spectra of the glass-ceramic samples to be at 870 and 1080 cm -1 . These bands can be attributed to some asymmetric stretching vibrations of Si-O-Si bridging bonds [22] and V═O (double bond) in tetragonal VO 4 groups [21] as well as some Fe-O-S bridging bond [24]. e The band that appeared at 1430 cm -1 is assigned to some deformed vibration of H-O-H groups diffused throw the structure of glass or surface adsorbed water [25].…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

Effect of Sulfur on the Structure and Physical Properties of Vanadium-Iron-Lithium-Silicate Glass and Glass-Ceramics Nano Composite

Hassaan¹

2016

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Glass sample with the composition 1 Li 2 O • 0.25 Fe 2 O 3 • 0.25 V 2 O 5 • 1.5 SiO 2 has been studied for the usage as a cathode material in solid batteries. Another sample with the previous composition in addition to 5wt. % sulfur as reduced agent to yelled multi-valance Fe and V ions was also studied. Both sulfur-free and sulfur-doped glass samples were subjected to heat treatment for one hour at 550°C to obtain two glass-ceramic samples. Structural studies were made using X-ray diffraction (XRD), Mössbauer effect (ME) and Fourier-transform infrared spectroscopy (FT-IR). The precipitation of various phases in heat treated glass samples with particle size in the nano-range was observed in X-ray pattern. Mössbauer spectra indicated that iron exist as a ferric ions occupy two non-equivalent tetrahedral sites in the sulfur-free samples, while ferrous ions in octahedral site in addition to the previous two ferric phases was appeared in sulfur-doped samples. Differential thermal analysis (DTA) was also carried out to monitor the crystallization temperature and the thermal stability of the obtained glasses. DC electrical conductivity measurements exhibit an enhancement of the conductivity of sulfur-doped glass sample compared with sulfur-free which make it more suitable to use as cathode in the solid batteries.

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“…i) IR bands with smaller intensity situated between 350 and 550 cm −1 are associated with the contributions provenied from the bending vibrations of the O-Pb-P and Pb-O-Pb angles from [PbO4] structural units [22,23] overlapped with the stretching vibrations of the Cu-O and Mn-O bonds [24,25]. An increasing trend in the intensity of the IR bands can be evidenced by increasing of CuO contents up to 15 mol% CuO after that a decreasing tendency is evidenced by the addition of higher dopant contents up to x = 50 mol% CuO.…”

Section: Structural Investigation By Infrared Spectroscopy (Ir)mentioning

confidence: 99%

Spectroscopic and Voltammetric Study of Recycled and Cooper-Manganese-Doped Electrode Materials

Rada¹,

Ungureşan²,

Zhang³

et al. 2022

Preprint

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The novelty of this study consists in: i) synthesis and characterization of electrode materials recycled from a spent car battery and doped with MnO2 and CuO by the analysis of X-ray diffraction (XRD), Infrared (IR) and Electron Paramagnetic Resonance (EPR) data and ii) the investigation of electrochemical properties of prepared materials in view of new applications as electrode materials for battery. Electron Paramagnetic Resonance (EPR) data indicate that the intensity of the resonance line corresponding to the Cu+2 ion was modified with the increase of the dopant content. The analysis of X-ray Absorption Spectroscopy (XAS) data indicates that by increasing the dopant content there is a process of ordering the oxygen atoms around the lead similar to the PbO2 theoretical model. The electrochemical performances of the recycled and manganese-copper-doped materials are optimized for applications as new anodic electrode for the car battery.

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Synthesis, structure, optical and electrochemical properties of the lead sulfate-lead dioxide-lead glasses and vitroceramics

Cited by 24 publications

References 31 publications

A Facile and Environmentally Friendly Approach for Lead Recovery from Lead Sulfate Residue via Mechanochemical Reduction: Phase Transformation and Reaction Mechanism

A Facile and Environmentally Friendly Approach for Lead Recovery from Lead Sulfate Residue via Mechanochemical Reduction: Phase Transformation and Reaction Mechanism

Effect of Sulfur on the Structure and Physical Properties of Vanadium-Iron-Lithium-Silicate Glass and Glass-Ceramics Nano Composite

Spectroscopic and Voltammetric Study of Recycled and Cooper-Manganese-Doped Electrode Materials

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