Oxidation of acetaminophen by Green rust coupled with Cu(II) via dioxygen activation: The role of various interlayer anions (CO32−, SO42−, Cl−)

Zhao, Lijie; Chen, Yufan; Feng, Yong; Wu, Deli

doi:10.1016/j.cej.2018.06.039

Cited by 18 publications

(2 citation statements)

References 44 publications

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“…In Fe EC systems, aqueous Fe 2+ predominates in the initial stage, and surface-sorbed Fe(II) forms progressively due to in situ Fe(III) oxyhydroxides production. It has been well established that aqueous Fe 2+ oxidation can be auto-accelerated by the Fe(III) oxyhydroxides generated in situ. , It is also likely for the generation of other forms of Fe(II), that is, green rust and magnetite, when dissolved O 2 is limited. , Green rust and magnetite were reported to activate O 2 to •OH. , As a consequence, it is expected that interactions of these Fe(II) species with O 2 lead to •OH production in Fe EC systems. Because of the strong oxidizing ability of •OH (standard reduction potential of •OH/H 2 O: 2.8 V/SHE), refractory organic contaminants could be oxidized in Fe EC systems.…”

Section: Introductionmentioning

confidence: 99%

“…13,39 Green rust and magnetite were reported to activate O 2 to •OH. 32,40 As a consequence, it is expected that interactions of these Fe(II) species with O 2 lead to •OH production in Fe EC systems. Because of the strong oxidizing ability of •OH (standard reduction potential of •OH/H 2 O: 2.8 V/SHE), refractory organic contaminants could be oxidized in Fe EC systems.…”

Section: ■ Introductionmentioning

confidence: 99%

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Oxidizing Capacity of Iron Electrocoagulation Systems for Refractory Organic Contaminant Transformation

Qian

Yuan

Xie

et al. 2019

Environ. Sci. Technol.

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Iron electrocoagulation (Fe EC) is normally considered as a separation process. Here, we found that Fe(II)–O2 interactions in Fe EC systems could produce reactive oxidants, mainly hydroxyl radicals (•OH), for refractory organic contaminant transformation. Production of reactive oxidants, probed by benzoate conversion to p-hydroxybenzoic acid (p-HBA), depended on dissolved oxygen (DO) concentration and Fe(II) speciation. Measurable levels of DO were required for significant p-HBA production. Fe precipitates evolved from lepidocrocite to magnetite when DO decreased to below the detection limit. Both experiments and kinetic modeling suggest that the main Fe(II) species contributing to reactive oxidants (mainly •OH) production changed from aqueous Fe(II) initially to lepidocrocite-sorbed Fe(II) with progressive precipitates formation. When DO was not measurable at high currents (≥50 mA or 100 mA/L), reactive oxidant production was ineffective because of pH rise and Fe(II) preservation in magnetite, but it could be enhanced drastically by aeration. The reactive oxidants produced at 30 mA (or 60 mA/L) could degrade about 47% of 10 μM aniline and 34% of sulfanilamide within 6 h of Fe EC treatment. Our findings highlight the importance of reactive oxidants for refractory organic contaminants oxidation in Fe EC systems.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Oxidizing Capacity of Iron Electrocoagulation Systems for Refractory Organic Contaminant Transformation

Qian

Yuan

Xie

et al. 2019

Environ. Sci. Technol.

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Facile one-step redox synthesis of Bi2O2CO3/Bi2O3/Bi ternary photocatalyst without additional carbon source

Qiao

Lan

Zhu

et al. 2021

J Mater Sci: Mater Electron

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Construction of heterojunction and decoration of cocatalyst are two vital strategies to accelerate migration of charge carriers. However, the fabrication routs of multi-composites are usually complex and expensive. In this work, Bi 2 O 2 CO 3 /Bi 2 O 3 /Bi ternary composite was fabricated via a facile one-step redox reaction. Ethylene glycol was selected as the solvent during the whole reaction process. Moreover, ethylene glycol as an excellent reductant can reduce Bi 3+ into metallic Bi 0 and itself is oxidized to CO 3 2-, which would react with Bi 2 O 3 to generate Bi 2 O 2 CO 3 without additional carbon source. Component proportions in ternary composites were optimized by the control of the ratios of raw materials. Under simulate solar light, Bi-based ternary composites exhibited enhanced photodegradation e ciencies for multifarious pollutants in comparison with single and binary samples. The enhanced photocatalytic activities were ascribed to accelerated migration rate of charge carriers owing to the construction of heterojunction and decoration of cocatalyst.

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Accelerating Fe(III)/Fe(II) redox cycling in heterogeneous electro-Fenton process via S/Cu-mediated electron donor-shuttle regime

Wang,

Zhang,

Wang

et al. 2024

Applied Catalysis B: Environmental

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Oxidation of acetaminophen by Green rust coupled with Cu(II) via dioxygen activation: The role of various interlayer anions (CO32−, SO42−, Cl−)

Cited by 18 publications

References 44 publications

Oxidizing Capacity of Iron Electrocoagulation Systems for Refractory Organic Contaminant Transformation

Oxidizing Capacity of Iron Electrocoagulation Systems for Refractory Organic Contaminant Transformation

Facile one-step redox synthesis of Bi2O2CO3/Bi2O3/Bi ternary photocatalyst without additional carbon source

Accelerating Fe(III)/Fe(II) redox cycling in heterogeneous electro-Fenton process via S/Cu-mediated electron donor-shuttle regime

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