Oxygen Reduction Reaction from Water Electrolysis Intensified by Pressure and O<sub>2</sub><sup>−</sup>Oxidation Desulfurization

Zhang, Tong; Hu, Yingnan; Zhou, Yujian; Gong, Xuzhong; Wang, Zhi; Zhang, Shu; Wang, Mingyong

doi:10.1149/2.0351805jes

Cited by 8 publications

(2 citation statements)

References 59 publications

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“…They have important applications in oxygen reduction reactions (ORRs) due to their remarkable electrocatalytic characteristics [ 4 ]. These reactions play a significant role in corrosion [ 5 ], water electrolysis [ 6 ], electrochemical energy conversion [ 7 ], diverse industrial processes [ 8 ], etc. Their strong catalytic abilities are used, for example, in direct methanol fuel cells (DMFCs) for the conversion of fuel at the anode and the reduction of oxygen at the cathode [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation

et al. 2022

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Our work presents, for the first time, a comprehensive study of the synthesis of fully metallic platinum nanoparticles (Pt-NPs) involving the ablation process in double distilled water using a KrF excimer laser. To obtain detailed information on Pt-NP morphology and optical properties, prepared colloids were characterized using High Resolution Scanning Transmission Electron Microscopy (HR-STEM) with advanced capabilities for Energy Dispersive X-ray Analysis (EDX), UV/Vis optical spectroscopy, and Direct Analysis in Real Time—Mass Spectrometry (DART-MS). The influence of the applied laser fluence and laser repetition rate (RR) values on the characteristics of the obtained Pt-NPs and the ablation process, respectively, were also analyzed. Spherical and spherical-like nanoparticles exhibiting aggregation were produced. The Pt-NP mean size values were between 2.2 ± 1.2 nm and 4.0 ± 1.0 nm, while their interplanar distance measurements showed a face-centered cubic (FFC) Pt lattice (111), as revealed by HR–STEM measurements, for all investigated samples. The smallest mean size of 2.2 nm of the Pt-NPs was obtained using a 2.3 J cm−2 laser fluence at a 10 Hz RR, and the narrowest size distribution of the NPs was obtained with a 2.3 J cm−2 laser fluence at a 40 Hz RR. A linear dependence of the Pt-NP diameters versus the laser repetition rate was found at a constant fluence of 2.3 J cm−2. The proposed eco-friendly synthesis route of Pt-NPs, because of its relative simplicity, has the potential for use in industrial production.

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Section: Introductionmentioning

confidence: 99%

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation

et al. 2022

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“…However, the relationship between desulfurization energy consumption and desulfurization efficiency is often ignored in many studies. For example, Zhang et al investigated the influence of pressure enhancement factors and the design of high temperature electrolytic process conditions on the rate of electrolytic desulfurization [ 40 , 41 ]. Han et al paid attention to the influence of electrolytic temperature and current value on the desulfurization rate and efficiency [ 42 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Electrochemical Desulfurization of Coal Liquefaction Residue

Jiang

Zhang

et al. 2023

Molecules

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The occurrence of sulfur in coal direct liquefaction residue affects its further high quality and high value utilization. Electrochemical desulfurization is characterized by mild reaction conditions, simple operation, easy separation of sulfur conversion products and little influence on the properties of the liquefied residue. An anodic electrolytic oxidation desulphurization experiment was carried out on the liquefaction residue of the by-product of a coal-to-liquid enterprise in the slurry state. An electrochemical test and material characterization of raw materials before and after electrolysis showed that electrolytic oxidation can desulfurize the liquefaction residue under an alkaline condition. Linear sweep voltammetry (LSV) was used for the electrolysis experiments to obtain the optimal slurry concentration of 60 g/L. On this basis, the reaction kinetics were calculated, and the minimum activation energy in the interval at 0.9 (V vs. Hg/HgO) was 19.71 kJ/mol. The relationship between the electrolytic desulfurization of the liquefied residue and energy consumption was studied by the potentiostatic method. The influence of anodic potential and electrolytic temperature on the current density, cell voltage, desulfurization rate and energy consumption was investigated. The experimental results showed that the desulfurization rate and total energy consumption increase positively with the increase in reaction temperature and electrolytic potential in a certain range. The influence of the reaction temperature on the desulfurization rate and total energy consumption is more prominent than that of electrolytic potential, but the energy consumption of sulfur removal per unit mass does not show a positive correlation. Therefore, with the energy consumption per unit mass of sulfur removal as the efficiency index, the optimal experimental results were obtained: under the conditions of 0.8 (V vs. Hg/HgO) anode potential, 50 °C electrolytic temperature, 60 g/L slurry concentration and 14,400 s electrolytic time, the desulfurization rate was 18.85%, and the power consumption per unit mass of sulfur removal was 5585.74 W·s/g. The results of XPS, SEM, BET and IC showed that both inorganic and organic sulfur were removed by electrolytic oxidation, and the morphology, pore structure and chemical bond of the liquefied residue were affected by electrolytic oxidation. The research method provides a new idea and reference for the efficiency evaluation of desulfurization and hydrogen production from coal liquefaction residue.

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Activation of cadmium under simulated solar illumination and its impact on the mobility of Cd in flooded soils

Luo

Xiao

Liu

et al. 2022

Environ Sci Pollut Res

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In waterlogged paddy soils, cadmium (Cd) can be precipitated as cadmium sul de (CdS) under reductive environment, thereby limiting the absorption of Cd by plants. Multiple environmental factors (such as water, pH, Eh, etc.) played a role in the control of Cd mobility and bioavailability. In this study, we investigated the in uence of the solar irradiation on the photo-dissolution of synthetic CdSmontmorillonite composites (CdS-M) in solution and the stability of Cdin natural soil. The release kinetic of Cd 2+ showed that after the irradiation of simulated sunlight, CdS-M composites became less stable compared to the dark control. The solar irradiation seemed to enhance the release of Cd 2+ from CdS signi cantly and continuously. Electron paramagnetic resonance (EPR) and quenching experiments con rmed that the photogenerated holes, O 2•and •OH were possibly involved in the photo-induced release of Cd 2+ , while the holes was primarily responsible for the reaction.Irradiation under alkaline solution or the presence of DOM, PO 4 3-, CO 3 2and urea markedly inhibited the photodissolution process of CdS. The photo-mediated activation of Cd was further con rmed in paddy soil under natural sunlight, with a nearly 3-fold increase in concentration of extractable Cd during the 15 days irradiation. This study highlights the importance of photochemical transformation of Cd in the environmental water and soil.

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Oxygen Reduction Reaction from Water Electrolysis Intensified by Pressure and O₂⁻Oxidation Desulfurization

Cited by 8 publications

References 59 publications

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation

Experimental Study on Electrochemical Desulfurization of Coal Liquefaction Residue

Activation of cadmium under simulated solar illumination and its impact on the mobility of Cd in flooded soils

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Oxygen Reduction Reaction from Water Electrolysis Intensified by Pressure and O2−Oxidation Desulfurization

Cited by 8 publications

References 59 publications

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation

Experimental Study on Electrochemical Desulfurization of Coal Liquefaction Residue

Activation of cadmium under simulated solar illumination and its impact on the mobility of Cd in flooded soils

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Oxygen Reduction Reaction from Water Electrolysis Intensified by Pressure and O₂⁻Oxidation Desulfurization