Identifying the Role of Surface Hydroxyl on FeOCl in Bridging Electron Transfer toward Efficient Persulfate Activation DOI
Ximeng Xu, Shujing Zhang, Yuhao Wang

и другие.

Environmental Science & Technology, Год журнала: 2023, Номер 57(34), С. 12922 - 12930

Опубликована: Авг. 15, 2023

FeOCl is a highly effective candidate material for advanced oxidation process (AOP) catalysts, but there remain enormous uncertainties about the essence of its outstanding activity. Herein, we clearly elucidate mechanism involved in FeOCl-catalyzed perdisulfate (PDS) activation, and role surface hydroxyls bridging electron transfer between Fe sites PDS onto FeOCl/H2O interface highlighted. ATR-FTIR Raman analyses reveal that phosphate could suppress activity via substituting hydroxyls, demonstrating essential hydroxyl activation. By use X-ray absorption fine structure density functional theory calculations, found polar experienced prominent hydrolyzation, which enriched abundant electrons within microarea around site, leading to stronger attraction PDS. As result, adsorption was obviously enhanced, bond length O–O adsorbed lengthened, from atoms also promoted. This work proposed new strategy PDS-based AOP development hint building efficient heterogeneous catalysts regulating hydroxylation active sites.

Язык: Английский

Iron Single-Atom Catalyst Actuates PMS/O3 Activation Process: Nonradical Generation Path for Synergistic Multiperoxides DOI

Shuhan Fu,

Zhenyang Xu,

Hanlin Yang

и другие.

ACS Applied Engineering Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Singlet oxygen (1O2) is an excellent reactive species in advanced oxidation processes for water purification due to its environmental suitability and selectivity. However, generation conversion mechanisms remain unclear. Herein, we have constructed a high-yield system 1O2 by introducing ozone (O3) into iron single-atom catalyst/peroxymonosulfate (PMS) system. The steady-state concentration of the was increased 53.2% at O3 below 0.5 mg/L. formation from high-valent iron-oxo (FeIV═O) revealed electron paramagnetic resonance analysis, where FeIV═O found probe experiment via activation PMS on sites. developed situ singlet fluorescence imaging technique observed that addition has promoted process 1O2. Density functional theory calculations further demonstrated low energy barrier key intermediate OO* this process. These findings help understand mechanism production molecular level guide design efficient reaction systems purification.

Язык: Английский

Процитировано

3
Selective activation of peroxymonocarbonate over a Co/N-doped carbon catalyst for a 1O2-mediated oxidation process DOI
Zihan Yang, Zihan Shen,

Yi Zhou

и другие.

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115665 - 115665

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

3
Efficient photo-switchable activation of periodate by nitrogen-vacancy-rich carbon nitride for organic contaminant removal: Theoretical predictions and experimental validations DOI

Yi-Jiao Sun,

Zhuoya Fang,

Xin-Tong Huang

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 337, С. 122994 - 122994

Опубликована: Июнь 15, 2023

Язык: Английский

Процитировано

41
Single‐Atom Catalysts Originated from Metal–Organic Frameworks for Sulfate Radical‐Based Advanced Oxidation Processes: Critical Insights into Mechanisms DOI Open Access
Yaoning Chen,

Huayue Kang,

Min Cheng

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 34(6)

Опубликована: Окт. 22, 2023

Abstract The widely discussed single‐atom catalysts (SACs) are regarded as a kind of attractive material for sulfate radical‐based advanced oxidation processes (SR‐AOPs) owing to their maximum atomic utilization efficiency and outstanding stability. Currently, metal–organic frameworks (MOFs) have appeared prospective precursors building SACs due extensive chelating sites, functional adjustability, structural tunability. However, there few critical systematic reviews about the application MOF‐derived in SR‐AOPs, especially in‐depth analysis mechanisms. Therefore, this review seeks offer thorough summary development SR‐AOPs. First, unique advantages MOFs derivative thoroughly. Afterward, current synthesis strategies elaborated categorically unveil formation process single atoms coordination environments. Notably, roles different reaction sites including generation reactive species mediating electron transfer further analyzed explain mechanisms comprehensively. Thereafter, characterization techniques theoretical calculations studies also highlighted. Eventually, insights into present challenges future developments proposed, which expected enhance catalytic

Язык: Английский

Процитировано

39
Identifying the Role of Surface Hydroxyl on FeOCl in Bridging Electron Transfer toward Efficient Persulfate Activation DOI
Ximeng Xu, Shujing Zhang, Yuhao Wang

и другие.

Environmental Science & Technology, Год журнала: 2023, Номер 57(34), С. 12922 - 12930

Опубликована: Авг. 15, 2023

FeOCl is a highly effective candidate material for advanced oxidation process (AOP) catalysts, but there remain enormous uncertainties about the essence of its outstanding activity. Herein, we clearly elucidate mechanism involved in FeOCl-catalyzed perdisulfate (PDS) activation, and role surface hydroxyls bridging electron transfer between Fe sites PDS onto FeOCl/H2O interface highlighted. ATR-FTIR Raman analyses reveal that phosphate could suppress activity via substituting hydroxyls, demonstrating essential hydroxyl activation. By use X-ray absorption fine structure density functional theory calculations, found polar experienced prominent hydrolyzation, which enriched abundant electrons within microarea around site, leading to stronger attraction PDS. As result, adsorption was obviously enhanced, bond length O–O adsorbed lengthened, from atoms also promoted. This work proposed new strategy PDS-based AOP development hint building efficient heterogeneous catalysts regulating hydroxylation active sites.

Язык: Английский

Процитировано

36