Activation of peroxydisulfate by zero valent iron-carbon composites prepared by carbothermal reduction: Enhanced non-radical and radical synergies

Xue, Chengjie; Luo, Yanping; Peng, Yifu; Zhou, Long; Zheng, Jiaru; Zhang, Kai; Fang, Zhanqiang

doi:10.1016/j.envpol.2024.124321

Environmental Pollution

2024

DOI: 10.1016/j.envpol.2024.124321

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Activation of peroxydisulfate by zero valent iron-carbon composites prepared by carbothermal reduction: Enhanced non-radical and radical synergies

Chengjie Xue,

Yanping Luo,

Yifu Peng

et al.

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Cited by 2 publications

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Reutilizing waste self-heating bag for one-pot fabrication of supported nano zero-valent iron with high stability to activate peroxydisulfate towards sulfapyridine degradation

Zhao,

Zhang,

Jin

et al. 2025

Separation and Purification Technology

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Reutilizing waste self-heating bag for one-pot fabrication of supported nano zero-valent iron with high stability to activate peroxydisulfate towards sulfapyridine degradation

Zhao,

Zhang,

Jin

et al. 2025

Separation and Purification Technology

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Efficient Degradation of Metronidazole by In Situ High-Valent Iron-Oxo Species in Nanoclustered Iron–Carbon Particles

Xue,

Fang,

Peng

2024

ACS EST Eng.

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High-valent metal species are selective, nonradical species that can enhance advanced oxidation processes (AOPs) for the treatment of difficult-to-degrade pollutants due to their long lifetimes and high steady-state concentrations. As the number of particles in the cluster material increases, high-valent metal sites appear inside the clusters. The special high-valent metal species inside the cluster materials enhance the removal of pollutants, but the mechanism of the role of the cluster materials in the AOPs is not clear. In this paper, nanoclustered iron− carbon particles (BAGAFe) were prepared by carbothermal reduction with gallic acid (GA) as an iron complexing reagent. Low-cost batch preparation of nano zerovalent iron and activated oxidative degradation of metronidazole (MNZ) by peroxydisulfate (PDS) with low dissolved iron (<0.9 mg/L) were achieved. Spectroscopic studies and 18 O isotope labeling experiments demonstrated the presence of highvalent iron-oxo species (Fe IV �O). Calculation and analysis of steady-state concentrations of various reactive oxygen species (ROSs) demonstrated that Fe IV �O contributed 77.8% to the degradation of MNZ. Density functional theory (DFT) and degradation products showed that Fe IV �O is the main ROS involved in the degradation of MNZ. This study provides new insight into the preparation of clustered iron−carbon materials and their generation of Fe IV �O in activated PDS.

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Activation of peroxydisulfate by zero valent iron-carbon composites prepared by carbothermal reduction: Enhanced non-radical and radical synergies

Cited by 2 publications

References 43 publications

Reutilizing waste self-heating bag for one-pot fabrication of supported nano zero-valent iron with high stability to activate peroxydisulfate towards sulfapyridine degradation

Reutilizing waste self-heating bag for one-pot fabrication of supported nano zero-valent iron with high stability to activate peroxydisulfate towards sulfapyridine degradation

Efficient Degradation of Metronidazole by In Situ High-Valent Iron-Oxo Species in Nanoclustered Iron–Carbon Particles

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