Mechanistic insight into the electron transfer from Fe(II) minerals to quinones

Tian, Yingxiao; Zhang, Peng; Yuan, Songhu

doi:10.1016/j.chemgeo.2024.121981

Chemical Geology

2024

DOI: 10.1016/j.chemgeo.2024.121981

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Mechanistic insight into the electron transfer from Fe(II) minerals to quinones

Yingxiao Tian,

Peng Zhang,

Songhu Yuan

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Cited by 4 publications

References 46 publications

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Synergistic effect and mechanism of ferric ion modified citric acid depressant in the flotation separation of scheelite from cassiterite

Zheng,

Dong,

Shen

et al. 2025

Separation and Purification Technology

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Synergistic effect and mechanism of ferric ion modified citric acid depressant in the flotation separation of scheelite from cassiterite

Zheng,

Dong,

Shen

et al. 2025

Separation and Purification Technology

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Transformation of Natural Organic Matter in Simulated Abiotic Redox Dynamic Environments: Impact on Fe Cycling

Zhou,

Garg,

Miller

et al. 2024

Environ. Sci. Technol.

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Redox fluctuations within redox dynamic environments influence the redox state of natural organic matter (NOM) and its interaction with redox-active elements, such as iron. In this work, we investigate the changes in the molecular composition of NOM during redox fluctuations as well as the impact of these changes on the Fe-NOM interaction employing Suwannee River Dissolved Organic Matter (SRDOM) as a representative NOM. Characterization of SRDOM using X-ray photoelectron spectroscopy and Fourier transform infrared spectrometry showed that irreversible changes occurred following electrochemical reduction and reoxidation of SRDOM in air. Changes in the redox state of SRDOM impacted its interaction with iron with higher rates of Fe(III) reduction in the presence of reduced and reoxidized SRDOM than in the presence of the original SRDOM. The increased rate of Fe(III) reduction in the presence of reduced SRDOM was due to the formation of reduced organic moieties on SRDOM reduction. The Fe(II) oxidation rate also increased in the presence of reduced SRDOM due to the formation of redox-active moieties that were capable of oxidizing Fe(II). Overall, our study provides useful insights into the changes in SRDOM that may occur in redox dynamic environments and the associated impact of these changes on Fe transformations.

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Modified spectrophotometry for micromolar H₂O₂ determination in iron-containing solutions with leuco crystal violet under both aerobic and anaerobic conditions

He,

Xian,

et al. 2024

Anal. Methods

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Mechanistic insight into the electron transfer from Fe(II) minerals to quinones

Cited by 4 publications

References 46 publications

Synergistic effect and mechanism of ferric ion modified citric acid depressant in the flotation separation of scheelite from cassiterite

Synergistic effect and mechanism of ferric ion modified citric acid depressant in the flotation separation of scheelite from cassiterite

Transformation of Natural Organic Matter in Simulated Abiotic Redox Dynamic Environments: Impact on Fe Cycling

Modified spectrophotometry for micromolar H₂O₂ determination in iron-containing solutions with leuco crystal violet under both aerobic and anaerobic conditions

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Mechanistic insight into the electron transfer from Fe(II) minerals to quinones

Cited by 4 publications

References 46 publications

Synergistic effect and mechanism of ferric ion modified citric acid depressant in the flotation separation of scheelite from cassiterite

Synergistic effect and mechanism of ferric ion modified citric acid depressant in the flotation separation of scheelite from cassiterite

Transformation of Natural Organic Matter in Simulated Abiotic Redox Dynamic Environments: Impact on Fe Cycling

Modified spectrophotometry for micromolar H2O2 determination in iron-containing solutions with leuco crystal violet under both aerobic and anaerobic conditions

Contact Info

Product

Resources

About

Modified spectrophotometry for micromolar H₂O₂ determination in iron-containing solutions with leuco crystal violet under both aerobic and anaerobic conditions