Construction of surface micro-electric fields on common metal Fe/Mg co-doped g-C3N4 with surface acidification for synergistic activation of peroxymonosulfate

Zhan Gao; Zhiqun Xie; Meiqiang Cai; Chunying Dong; Mengting Weng; Micong Jin; Zongsu Wei

doi:10.1016/j.cej.2024.153950

Construction of surface micro-electric fields on common metal Fe/Mg co-doped g-C₃N₄ with surface acidification for synergistic activation of peroxymonosulfate

Zhan Gao, Zhiqun Xie, Meiqiang Cai^*, Chunying Dong, Mengting Weng, Micong Jin, Zongsu Wei

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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Abstract

Developing low-cost, sustainable catalysts is critical to meet the green-transition goal in water treatments. Herein, a low-cost, common metal modified g-C₃N₄ material (FeMg-O-g-C₃N₄) was designed to improve electron mobility and peroxymonosulfate (PMS) utilization. Likewise, surface acidification of g-C₃N₄ has introduced extra porous structure, anchor sites for metals, and activate sites. This new catalyst free of expensive rare-earth metals creates numerous surface micro-electric fields through: 1) large difference in electronegativity for Fe (1.83) and Mg (1.31); 2) cation-π effect formed between metals and benzene-like ring structure of g-C₃N₄; and 3) added PMS and pollutant (tetracycline (TC)) as electron provider promoting the transfer of electrons to the electron-rich Fe sites. Both non-radical (¹O₂) and radical (surface-bound ·OH and SO₄^·−) pathways contribute to the pollutant degradation. Given the promising results and stability of the catalyst, this study opens new horizons to apply common metals over expensive, toxic rare metals in PMS-based water treatments.

Original language	English
Article number	153950
Journal	Chemical Engineering Journal
Volume	496
ISSN	1385-8947
DOIs	https://doi.org/10.1016/j.cej.2024.153950
Publication status	Published - Sept 2024

Keywords

Cation-π effect
Common metals
Electronegativity
Micro-electric fields
Peroxymonosulfate

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@article{75c665fea04e48a2977587b47cb038bd,

title = "Construction of surface micro-electric fields on common metal Fe/Mg co-doped g-C3N4 with surface acidification for synergistic activation of peroxymonosulfate",

abstract = "Developing low-cost, sustainable catalysts is critical to meet the green-transition goal in water treatments. Herein, a low-cost, common metal modified g-C3N4 material (FeMg-O-g-C3N4) was designed to improve electron mobility and peroxymonosulfate (PMS) utilization. Likewise, surface acidification of g-C3N4 has introduced extra porous structure, anchor sites for metals, and activate sites. This new catalyst free of expensive rare-earth metals creates numerous surface micro-electric fields through: 1) large difference in electronegativity for Fe (1.83) and Mg (1.31); 2) cation-π effect formed between metals and benzene-like ring structure of g-C3N4; and 3) added PMS and pollutant (tetracycline (TC)) as electron provider promoting the transfer of electrons to the electron-rich Fe sites. Both non-radical (1O2) and radical (surface-bound ·OH and SO4·−) pathways contribute to the pollutant degradation. Given the promising results and stability of the catalyst, this study opens new horizons to apply common metals over expensive, toxic rare metals in PMS-based water treatments.",

keywords = "Cation-π effect, Common metals, Electronegativity, Micro-electric fields, Peroxymonosulfate",

author = "Zhan Gao and Zhiqun Xie and Meiqiang Cai and Chunying Dong and Mengting Weng and Micong Jin and Zongsu Wei",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s)",

year = "2024",

month = sep,

doi = "10.1016/j.cej.2024.153950",

language = "English",

volume = "496",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

}

Construction of surface micro-electric fields on common metal Fe/Mg co-doped g-C₃N₄ with surface acidification for synergistic activation of peroxymonosulfate. / Gao, Zhan; Xie, Zhiqun; Cai, Meiqiang et al.
In: Chemical Engineering Journal, Vol. 496, 153950, 09.2024.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Construction of surface micro-electric fields on common metal Fe/Mg co-doped g-C3N4 with surface acidification for synergistic activation of peroxymonosulfate

AU - Gao, Zhan

AU - Xie, Zhiqun

AU - Cai, Meiqiang

AU - Dong, Chunying

AU - Weng, Mengting

AU - Jin, Micong

AU - Wei, Zongsu

PY - 2024/9

Y1 - 2024/9

N2 - Developing low-cost, sustainable catalysts is critical to meet the green-transition goal in water treatments. Herein, a low-cost, common metal modified g-C3N4 material (FeMg-O-g-C3N4) was designed to improve electron mobility and peroxymonosulfate (PMS) utilization. Likewise, surface acidification of g-C3N4 has introduced extra porous structure, anchor sites for metals, and activate sites. This new catalyst free of expensive rare-earth metals creates numerous surface micro-electric fields through: 1) large difference in electronegativity for Fe (1.83) and Mg (1.31); 2) cation-π effect formed between metals and benzene-like ring structure of g-C3N4; and 3) added PMS and pollutant (tetracycline (TC)) as electron provider promoting the transfer of electrons to the electron-rich Fe sites. Both non-radical (1O2) and radical (surface-bound ·OH and SO4·−) pathways contribute to the pollutant degradation. Given the promising results and stability of the catalyst, this study opens new horizons to apply common metals over expensive, toxic rare metals in PMS-based water treatments.

AB - Developing low-cost, sustainable catalysts is critical to meet the green-transition goal in water treatments. Herein, a low-cost, common metal modified g-C3N4 material (FeMg-O-g-C3N4) was designed to improve electron mobility and peroxymonosulfate (PMS) utilization. Likewise, surface acidification of g-C3N4 has introduced extra porous structure, anchor sites for metals, and activate sites. This new catalyst free of expensive rare-earth metals creates numerous surface micro-electric fields through: 1) large difference in electronegativity for Fe (1.83) and Mg (1.31); 2) cation-π effect formed between metals and benzene-like ring structure of g-C3N4; and 3) added PMS and pollutant (tetracycline (TC)) as electron provider promoting the transfer of electrons to the electron-rich Fe sites. Both non-radical (1O2) and radical (surface-bound ·OH and SO4·−) pathways contribute to the pollutant degradation. Given the promising results and stability of the catalyst, this study opens new horizons to apply common metals over expensive, toxic rare metals in PMS-based water treatments.

KW - Cation-π effect

KW - Common metals

KW - Electronegativity

KW - Micro-electric fields

KW - Peroxymonosulfate

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DO - 10.1016/j.cej.2024.153950

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SN - 1385-8947

VL - 496

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 153950

ER -

Construction of surface micro-electric fields on common metal Fe/Mg co-doped g-C₃N₄ with surface acidification for synergistic activation of peroxymonosulfate

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