Oxidative leaching of V-Cr–bearing reducing slag via a Cr(III) induced Fenton-like reaction in concentrated alkaline solutions

Liu, Zhiqiang; Lv, Yeqing; Wang, Yaru; Wang, Shaona; Odebiyi, Oluwasegun Samuel; Liu, Biao; Zhang, Yi; Du, Hao

doi:10.1016/j.jhazmat.2022.129495

Cited by 11 publications

(5 citation statements)

References 48 publications

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“…To gain insight into the capacity of ⋅OH generation on different FeB/TiO 2 composite, the concentrations of ⋅OH ([⋅OH]) were determined by terephthalic acid probe method ( Figure S12 ). 64 FeB was found to significantly enhance the ⋅OH generation of TiO 2 , and [⋅OH] reached the highest value at 7FBT (8.31 μM in 50 min), which was 3.26 times higher than that of CST (2.55 μM in 50 min) under the same conditions ( Table S5 ). These results illustrated that (1) FeB can effectively enhance the capacity of the ⋅OH generation on CST, and (2) FeB loading can have a modulating effect on the ⋅OH concentration, thus enhancing the PS-MPs degradation.…”

Section: Resultsmentioning

confidence: 90%

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Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways

Han

et al. 2023

iScience

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Section: Resultsmentioning

confidence: 90%

“…⋅OH concentration was quantified by terephthalic acid (TPA) probe method ( Figure S12 ). 64 Specifically, 0.5 mM TPA was dissolved in 2 mM NaOH solution and filtered through a 0.45 μm filter (Nylon). Then, 50 mg of photocatalyst was added to 50 mL reaction solution.…”

Section: Methodsmentioning

confidence: 99%

Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways

Han

et al. 2023

iScience

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“…In addition, spectroscopic experiments further demonstrated the production of these ROS . TA has been used as a fluorescence probe to capture · OH to form 2-hydroxyterephthalic acid (TAOH) and emit fluorescence . As shown in Figure c, more hydroxyl radicals ( · OH) were generated with 0.1 CoP/MoS 2 .…”

Section: Resultsmentioning

confidence: 99%

Photodynamically Functionalized CoP/MoS₂ Nanocomposites with Antibacterial Activity

Yu,

Huang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Bacterial infection and antibiotic resistance bring great trouble to anti-infective treatment. Therefore, it is urgent to develop antibacterial materials with high efficiency as alternatives. Herein, we successfully synthesized a series of peroxidase-like CoP/MoS 2 catalysts to strikingly enhance the photocatalytic antibacterial activity. After excitation by LED light, the CoP/MoS 2 heterojunction composite exhibited a photocatalytic sterilizing rate of 97.2% toward S. aureus with a concentration of 1 mg/mL. Based on the theoretical discussion and experimental result analysis, it is concluded that the sharp edges of MoS 2 nanosheets, excellent hydrophilicity of CoP/MoS 2 , and incorporation with the generation of reactive oxygen radicals endow the catalyst with rapid and effective photocatalytic bacterial killing activity. This study provides a promising strategy by using adhesive nanozymes in close proximity to the bacteria surface, which will guide the design and synthesis of heterojunction photocatalysts with nanozymes activity and high photocatalytic antibacterial efficiency.

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“…The emergence of ROS in alkaline environments is considered crucial for the oxidation of V and Cr, and oxygen MB is an effective method for enhancing ROS generation in mediums. , To further investigate the superior catalytic oxidation mechanisms of the MCA-MB method, EPR spectroscopy was utilized to detect ROS generation for MCA with RBs and MCA with MBs, with findings presented in Figure (a). Notably, both methods exhibited similar peaks corresponding to HO 2 • /O 2 •– radicals, , with the signal intensity of HO 2 • /O 2 •– characteristic peaks increased in the order MCA with RBs < MCA with MBs.…”

Section: Resultsmentioning

confidence: 99%

Oxidative Leaching of Vanadium and Chromium from Vanadium Slag via a Mechanochemical Activation─Assisted Microbubbles Method

Liu,

Lv,

Wang

et al. 2024

ACS Sustainable Resour. Manage.

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Vanadium slag is the primary source for vanadium extraction and also a source for chromium production owing to containing a considerable amount of chromium. However, it is challenging to extract vanadium and chromium in a green, safe, simple, and efficient way under ambient conditions. Here we report a facile process for simultaneous extraction of vanadium and chromium from vanadium slag via a mechanochemical activation− assisted microbubbles method. The vanadium slag subjected to mechanochemical activation exhibited markedly enhanced leaching efficiencies for both vanadium and chromium under atmospheric pressure compared to that of the slag that did not undergo mechanochemical activation. This enhancement in leaching efficiency can be primarily attributed to the synergistic effect of the mechanochemical treatment and microbubbles. The microbubbles enhance the generation of reactive oxygen species in an alkaline medium, while the mechanochemical activation process increases the utilization efficiency of these reactive oxygen species due to the improved interfacial reactivity of the vanadium slag. This study introduces a promising alternative for the environmentally responsible treatment of vanadium slag, showcasing a novel method for extracting vanadium and chromium through a mechanochemical activation-assisted microbubbles approach.

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Oxidative leaching of V-Cr–bearing reducing slag via a Cr(III) induced Fenton-like reaction in concentrated alkaline solutions

Cited by 11 publications

References 48 publications

Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways

Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways

Photodynamically Functionalized CoP/MoS₂ Nanocomposites with Antibacterial Activity

Oxidative Leaching of Vanadium and Chromium from Vanadium Slag via a Mechanochemical Activation─Assisted Microbubbles Method

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Oxidative leaching of V-Cr–bearing reducing slag via a Cr(III) induced Fenton-like reaction in concentrated alkaline solutions

Cited by 11 publications

References 48 publications

Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways

Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways

Photodynamically Functionalized CoP/MoS2 Nanocomposites with Antibacterial Activity

Oxidative Leaching of Vanadium and Chromium from Vanadium Slag via a Mechanochemical Activation─Assisted Microbubbles Method

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Product

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Photodynamically Functionalized CoP/MoS₂ Nanocomposites with Antibacterial Activity