Unexpected Mn(V) Generation in Mn(II)/Sulfite System for Efficient Water Decontamination: Critical Role of Complexing Ligands in Regulating Mn(II) Activity DOI
Yuan Gao,

Yun Luo,

Jingyu Hu

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

In recent times, advanced oxidation processes (AOPs) based on sulfite activation via transition metal ions have gained significant attention for water decontamination. this work, we unexpectedly discovered that Mn(II) was inefficient in treatment. Intriguingly, the introduction of amino ligands such as nitrilotriacetic acid and picolinic significantly enhanced performance activation, enabling effective abatement contaminants. By combining quenching, chemical probing, 18O isotope tracing, electrochemical experiments, study addressed why Mn(II)/sulfite system sluggish contaminants degradation, how Mn(V) generated Mn(II)/sulfite/amino ligand system, different complexing exhibited distinct performances. We demonstrated notably activity with production stabilized Mn(III), which underwent further conversion to species, resulting rapid degradation This represents first discovery unexpected formation from low-valence manganese a sulfite-based system. Furthermore, spectral characteristics species under environmental pH conditions were identified time. These findings introduce novel process decontamination will broaden our understanding sulfite-activation-based AOPs well application chemistry treatment beyond.

Language: Английский

Mechanism insights into metal-organic framework-derived carbon materials activating periodate for p-chlorophenol removal: The role of S and Fe co-doping DOI
Wenjun Xiao,

Ao Chen,

Min Cheng

et al.

Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122735 - 122735

Published: Nov. 9, 2024

Language: Английский

Citations

6
Iron Single‐Atom Based Double‐Reaction‐Center Catalysis Triggers Internal‐Driven and External‐Driven Pathways for Green Fenton‐Like Chemistry DOI Open Access

Qingbai Tian,

Jiale Chang,

Xiaoming Peng

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Double-reaction-centers (DRCs) Fenton-like chemistry with low or zero oxidant addition has garnered increasing attentions due to their alignment the principles of green and sustainable development. However, regulation such processes remains a significant challenge, primarily deficiencies in microscopic interpretation electron migration mechanisms operating addition. In this work, iron single-atom DRCs catalyst (Fe/N-SAC) was prepared for internal-driven system (zero addition) external-driven (low peroxymonosulfate [PMS] addition). Results indicated absence dissolved oxygen activation PMS-zreo Fe/N-SAC system, single atoms acted as predominate acceptors extract electrons from electron-donating pollutants valence decreasing +2.37 +2.07 they could also be recovered under O2 atmosphere. contrast, transferred both PMS Fe/N-SAC/PMS involving predominant transfer process (ETP) internal-driven. Furthermore, two experimental devices based on core systems were designed achieve long-term operation. These studies will complement catalytic module applications systems.

Language: Английский

Citations

0
Application of a novel amorphous-Co3S4/PMS oxidation system in the ultrafiltration treatment of surface water: A promising tool for membrane fouling alleviation DOI

Heli Tang,

Chi Zhang,

Wenxin Shi

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132315 - 132315

Published: March 1, 2025

Language: Английский

Citations

0
Iron Single‐Atom Based Double‐Reaction‐Center Catalysis Triggers Internal‐Driven and External‐Driven Pathways for Green Fenton‐Like Chemistry DOI Open Access

Qingbai Tian,

Jiale Chang,

Xiaoming Peng

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract Double‐reaction‐centers (DRCs) Fenton‐like chemistry with low or zero oxidant addition has garnered increasing attentions due to their alignment the principles of green and sustainable development. However, regulation such processes remains a significant challenge, primarily deficiencies in microscopic interpretation electron migration mechanisms operating addition. In this work, iron single‐atom DRCs catalyst (Fe/N‐SAC) was prepared for internal‐driven system (zero addition) external‐driven (low peroxymonosulfate [PMS] addition). Results indicated absence dissolved oxygen activation PMS‐zreo Fe/N‐SAC system, single atoms acted as predominate acceptors extract electrons from electron‐donating pollutants valence decreasing +2.37 +2.07 they could also be recovered under O 2 atmosphere. contrast, transferred both PMS Fe/N‐SAC/PMS involving predominant transfer process (ETP) internal‐driven. Furthermore, two experimental devices based on core systems were designed achieve long‐term operation. These studies will complement catalytic module applications systems.

Language: Английский

Citations

0
Heterogeneous Peroxymonosulfate-Based Advanced Oxidation Mechanisms: New Wine in Old Bottles? DOI
Xiaoyu Zhao, Zhenghua Zhang

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Heterogeneous persulfate-based advanced oxidation processes (PS-AOPs) have been gaining significant attention in water/wastewater treatment; however, the elucidation of mechanisms PS-AOPs has become increasingly complex as understanding potential reactive pathways expands and rigor corresponding characterizations intensifies. As such, accurately illustrating system with a robust convincing methodology is crucial, while influence substrates must not be overlooked. In this Perspective, established techniques critical issues are systematically compiled to serve practical guidelines. Additionally, newly proposed pathway, direct transfer process (DOTP), discussed comparison conventional mineralization by oxidative species (ROS) PS-AOPs. Overall, investigation PS-AOP across various heterogeneous systems remains contentious calls for standardization, which work aims valuable reference.

Language: Английский

Citations

0
Silico-oxygen bonding integrated with nano-size pore enrichment enables sustainable low-oxidant-consumption Fenton-like chemistry DOI

Qingbai Tian,

Xin Zhang,

Jiale Chang

et al.

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123550 - 123550

Published: March 1, 2025

Language: Английский

Citations

0
Metal-based activation of periodate as an advanced oxidation process for water decontamination: A critical review DOI
Yun Shen,

Jinjing Huang,

Jinli Qiao

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162949 - 162949

Published: April 1, 2025

Language: Английский

Citations

0
Advancements and challenges in reaping dual benefits of ultrafiltration technology: fouling mitigation and emerging contaminants elimination DOI

Heli Tang,

Shuchang Huang,

Chi Zhang

et al.

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: unknown, P. 144584 - 144584

Published: Dec. 1, 2024

Language: Английский

Citations

2
Activation of periodate by CNT for selective catalytic oxidation: The overlooked significant role of residual metal species as catalytic sites DOI

Defenna Li,

Yiping Dong,

Fan Yang

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 357, P. 130037 - 130037

Published: Oct. 9, 2024

Language: Английский

Citations

0
Unexpected Mn(V) Generation in Mn(II)/Sulfite System for Efficient Water Decontamination: Critical Role of Complexing Ligands in Regulating Mn(II) Activity DOI
Yuan Gao,

Yun Luo,

Jingyu Hu

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

In recent times, advanced oxidation processes (AOPs) based on sulfite activation via transition metal ions have gained significant attention for water decontamination. this work, we unexpectedly discovered that Mn(II) was inefficient in treatment. Intriguingly, the introduction of amino ligands such as nitrilotriacetic acid and picolinic significantly enhanced performance activation, enabling effective abatement contaminants. By combining quenching, chemical probing, 18O isotope tracing, electrochemical experiments, study addressed why Mn(II)/sulfite system sluggish contaminants degradation, how Mn(V) generated Mn(II)/sulfite/amino ligand system, different complexing exhibited distinct performances. We demonstrated notably activity with production stabilized Mn(III), which underwent further conversion to species, resulting rapid degradation This represents first discovery unexpected formation from low-valence manganese a sulfite-based system. Furthermore, spectral characteristics species under environmental pH conditions were identified time. These findings introduce novel process decontamination will broaden our understanding sulfite-activation-based AOPs well application chemistry treatment beyond.

Language: Английский

Citations

0