2D surfaces twisted to enhance electron freedom toward efficient advanced oxidation processes

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 345, С. 123701 - 123701

Опубликована: Янв. 6, 2024

Язык: Английский

---

Electronic structure modulation of iron sites with fluorine coordination enables ultra-effective H2O2 activation

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Март 12, 2024

Abstract Electronic structure modulation of active sites is critical important in Fenton catalysis as it offers a promising strategy for boosting H 2 O activation. However, efficient generation hydroxyl radicals (•OH) often limited to the unoptimized coordination environment sites. Herein, we report rational design and synthesis iron oxyfluoride (FeOF), whose strongly coordinate with most electronegative fluorine atoms characteristic moiety F-(Fe(III)O 3 )-F, effective activation potent •OH generation. Results demonstrate that plays pivotal role lowering local electron density optimizing electronic structures sites, thus facilitating rate-limiting adsorption subsequent peroxyl bond cleavage reactions. Consequently, FeOF exhibits significant pH-adaptive yield (~450 µM) high selectivity, which 1 ~ orders magnitude higher than state-of-the-art iron-based catalysts, leading excellent degradation activities against various organic pollutants at neutral condition. This work provides fundamental insights into function atomic level, may inspire sustainable environmental remediation.

Язык: Английский

---

Oxygen-containing functional groups in Fe3O4@three-dimensional graphene nanocomposites for enhancing H2O2 production and orientation to 1O2 in electro-Fenton

Journal of Hazardous Materials, Год журнала: 2024, Номер 470, С. 134162 - 134162

Опубликована: Март 29, 2024

Язык: Английский

---

Insights into excitonic behavior in single-atom covalent organic frameworks for efficient photo-Fenton-like pollutant degradation

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 17, 2025

The generation of radicals through photo-Fenton-like reactions demonstrates significant potential for remediating emerging organic contaminants (EOCs) in complex aqueous environments. However, the excitonic effect, induced by Coulomb interactions between photoexcited electrons and holes, reduces carrier utilization efficiency these systems. In this study, we develop Cu single-atom-loaded covalent frameworks (CuSA/COFs) as models to modulate effects. Temperature-dependent photoluminescence ultrafast transient absorption spectra reveal that incorporating acenaphthene units into linker (CuSA/Ace-COF) significantly exciton binding energy (Eb). This modification not only enhances peroxymonosulfate adsorption at active sites but also facilitates rapid electron transfer promotes selective hydroxyl radical generation. Compared CuSA/Obq-COF (Eb = 25.6 meV), CuSA/Ace-COF 12.2 meV) shows a 39.5-fold increase pseudo-first-order rate constant sulfamethoxazole degradation (0.434 min-1). work provides insights modulating behavior single-atom catalysts via engineering EOCs degradation.

Язык: Английский

---

New insights into dual metals boost PMS activation over iron tungstate: The role of surface hydroxyl

Separation and Purification Technology, Год журнала: 2024, Номер 352, С. 128147 - 128147

Опубликована: Май 27, 2024

Язык: Английский

---

Fenton chemistry rising star: Iron oxychloride

Coordination Chemistry Reviews, Год журнала: 2024, Номер 518, С. 216051 - 216051

Опубликована: Июль 10, 2024

Язык: Английский

---

Surface hydroxyl synergistic oxygen vacancy to activate peroxydisulfate for enhancing the photocatalytic performance of Fe-ZnO/PEG-BiOCl: Catalytic and mechanistic study

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 136083 - 136083

Опубликована: Янв. 1, 2025

Язык: Английский

---

Critical review on the abatement of endocrine disrupting chemicals using synthesized iron-based materials in persulfate systems: Reactive species, reaction mechanisms, and perspectives

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161675 - 161675

Опубликована: Март 1, 2025

Язык: Английский

---

Enhanced peroxymonosulfate activation by δ-MnO2 nanocatalyst enriched with oxygen vacancies for phenolic pollutants polymerization

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 357, С. 124327 - 124327

Опубликована: Июнь 21, 2024

Язык: Английский

---

Humic acid inhibits hydroxyl radical generation during oxygenation of Fe(II) on goethite surface

The Science of The Total Environment, Год журнала: 2025, Номер 966, С. 178581 - 178581

Опубликована: Фев. 1, 2025

Язык: Английский

---