Efficient degradation of Bisphenol A by Fe3+/Fe2+ cycle activating persulfate with the assistance of biochar-supported MoO2

Ouyang, Da; Wu, Ronghao; Xu, Zhaojun; Zhu, Xiaoyun; Cai, Yimin; Chen, Ruihuan; Zhu, Changyin; Barceló, Damià; Zhang, Haibo

doi:10.1016/j.cej.2022.140381

Cited by 18 publications

(2 citation statements)

References 44 publications

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“…The greatest DXM removal ratio was reached at the moderate doses of β-Mo 2 C, Fe 3+ , and PDS, which were 0.20, 0.10, and 0.50 g·L –1 , respectively (Figure b–d). Excess β-Mo 2 C would convert excessive Fe 2+ from Fe 3+ , leading to the rapid depletion of PDS; meanwhile, high concentrations of Fe 3+ or PDS could consume ROS through the quenching effect, resulting in the negative influence on DXM removal. In addition, the cocatalytic effect of leaching Mo ions (Mo x + ) in solution was determined.…”

Section: Results and Discussionmentioning

confidence: 99%

Efficacious Reduction of Ferric Ions by Molybdenum Carbide in the Peroxydisulfate Fenton-Like Reaction for Dexamethasone Degradation

et al. 2023

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The tardy Fe2+ regeneration and the limited pH range confine the practical application of Fe-based homogenous Fenton-like reaction performance. To surmount the abovementioned obstacles, we applied molybdenum carbide (β-Mo2C) as the cocatalyst to boost Fe3+ reduction in the activation of peroxydisulfate (PDS) for the efficient degradation of dexamethasone (DXM). The proposed Fe3+/PDS/β-Mo2C can remove more than 90% DXM in the wide pH range (3.4 to 9.4). Electron spin resonance analysis and probe and quenching tests comprehensively demonstrated that a series of reactive species (•OH, SO4 •–, O2 •–, 1O2, and Fe(IV)) were formed during the synergistic process, and SO4 •– was the leading role. The circulation of Fe3+/Fe2+ was driven by the exposed sites of Mo2+/Mo4+ on the β-Mo2C, which further promoted the PDS activation. The reaction mechanism was clarified by various characterizations and density functional theory calculation, which indicated that the adsorption between Fe3+ and β-Mo2C could form Mo–Fe bonds and lengthen Fe–O and then improve the electron transport from β-Mo2C to Fe3+ and boost Fe3+ reduction. The reactivity and stability of β-Mo2C was higher than those of popular Mo-based materials. This work represents an attempt and possibility for Mo-based inorganic cocatalysis of advanced oxidation processes.

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Section: Results and Discussionmentioning

confidence: 99%

Efficacious Reduction of Ferric Ions by Molybdenum Carbide in the Peroxydisulfate Fenton-Like Reaction for Dexamethasone Degradation

et al. 2023

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“…[ 72 ] To mitigate the accumulation of H 2 O 2 , hydrogen peroxide scavengers such as iodide ions (I − ) or iron ions (Fe 2+ ) can be added to the electrolyte. [ 93 ] MABs are more complex to manufacture compared to traditional batteries. This is due to the need for specialized equipment to produce the air electrodes and the requirement for strict environmental controls during electrode production.…”

Section: Fundamental Causes For Mab Electrode Failurementioning

confidence: 99%

Progress and Complexities in Metal–Air Battery Technology

Ramasubramanian,

Dalapati,

Reddy

et al. 2024

Energy Tech

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Metal–air batteries (MABs) offer exceptional energy density, making them attractive for vehicle electrification and storing intermittent renewable energy. However, several challenges persist, including sluggish oxygen reduction and oxygen evolution reactions, interfacial stability issues, and challenges related to current collectors. Herein, the reasons behind MAB's failures are analyzed, considering their thermodynamic aspects (Gibbs free energy, entropy), electrochemical factors (redox potentials, polarization, and ion concentrations), and kinetic properties (mobility of charges). Strategies for mitigating energy barriers of the electrodes are explored, encompassing insights into the initiation process of the oxygen reduction and determinants of oxygen evolution kinetics. The impact of humidity on the electrolyte is assessed, and effective methods for dendrite prevention are elucidated. Additionally, the utilization of 3D electrodes, oxygen‐selective membranes, solid‐state electrolytes, hybrid polymer electrodes, conductive electrocatalysts, and artificial solid‐electrolyte interfaces, and their effects on addressing the challenges faced by MABs are discussed. The study also emphasizes six critical commercialization aspects for the advancement of MABs. Lastly, the potential prospects and challenges in the field of MAB technology are discussed.

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Molybdenum powder induced Fe2+/Fe3+ cycling enhanced activation peroxydisulfate for degradation of AO7: cost analysis, degradation mechanism, and toxicity evaluation

Lin,

Chen,

Chen

et al. 2024

Res Chem Intermed

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Efficient degradation of Bisphenol A by Fe3+/Fe2+ cycle activating persulfate with the assistance of biochar-supported MoO2

Cited by 18 publications

References 44 publications

Efficacious Reduction of Ferric Ions by Molybdenum Carbide in the Peroxydisulfate Fenton-Like Reaction for Dexamethasone Degradation

Efficacious Reduction of Ferric Ions by Molybdenum Carbide in the Peroxydisulfate Fenton-Like Reaction for Dexamethasone Degradation

Progress and Complexities in Metal–Air Battery Technology

Molybdenum powder induced Fe2+/Fe3+ cycling enhanced activation peroxydisulfate for degradation of AO7: cost analysis, degradation mechanism, and toxicity evaluation

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