Nanoconfinement steers nonradical pathway transition in single atom fenton-like catalysis for improving oxidant utilization

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

Опубликована: Июнь 22, 2024

Abstract The introduction of single-atom catalysts (SACs) into Fenton-like oxidation promises ultrafast water pollutant elimination, but the limited access to pollutants and oxidant by surface catalytic sites intensive consumption still severely restrict decontamination performance. While nanoconfinement SACs allows drastically enhanced reaction kinetics, detailed regulatory mechanisms remain elusive. Here, we unveil that, apart from local enrichment reactants, pathway shift is also an important cause for reactivity enhancement nanoconfined SACs. electronic structure cobalt site altered confining it within nanopores mesostructured silica particles, which triggers a fundamental transition singlet oxygen electron transfer 4-chlorophenol oxidation. changed accelerated interfacial mass render system up 34.7-fold higher degradation rate raised peroxymonosulfate utilization efficiency (from 61.8% 96.6%) relative unconfined control. It demonstrates superior other electron-rich phenolic compounds, good environment robustness, high stability treating real lake water. Our findings deepen knowledge catalysis may inspire innovations in low-carbon purification technologies heterogeneous applications.

Язык: Английский

---

The critical role of minerals in persulfate-based advanced oxidation process: Catalytic properties, mechanism, and prospects

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 148969 - 148969

Опубликована: Янв. 22, 2024

Язык: Английский

---

Transforming Plastics to Single Atom Catalysts for Peroxymonosulfate Activation: Axial Chloride Coordination Intensified Electron Transfer Pathway

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Transforming plastics into single-atom catalysts is a promising strategy for upcycling waste value-added functional materials. Herein, graphene-based catalyst with atomically dispersed FeN

Язык: Английский

---

From waste corn straw to graphitic porous carbon: A trade-off between specific surface area and graphitization degree for efficient peroxydisulfate activation

Journal of Hazardous Materials, Год журнала: 2024, Номер 471, С. 134422 - 134422

Опубликована: Апрель 25, 2024

Язык: Английский

---

Fluorinated Defect-Engineered Acetylenic Polymers with Separated Active Centers for Switching the Photosensitized Activation Pathway of Peroxymonosulfate

ACS Catalysis, Год журнала: 2024, Номер 14(3), С. 1405 - 1418

Опубликована: Янв. 11, 2024

The engineering of conjugated acetylenic polymers (CAPs) has great potential for photosensitized oxyanion activation, wherein their catalytic performance can be further advanced by incorporating artificial defects, while relevant reports are rare. Herein, we deliberately introduce the fluorinated defect into structure poly(1,3,5-triethynylbenzene) (PTEB) via copper-surface mediated Glaser polycondensation (denote as PTEB-Fx). PTEB-Fx exhibits a surface with an abundance acetylene moieties that possess strong affinity capturing oxyanions through preferential binding to peroxy-bonds oxyanions. Meanwhile, adjacent defects effectively delocalize π-electrons, narrow optical bandgap, and facilitate charge separation, thereby optimizing kinetics thermodynamics peroxymonosulfate (PMS) activation. Such spatial separated active centers leads synergistic effect involving enhanced oxidation ability holes (h+) elongation O–H bond in PMS, which triggers switch activation pathway toward oxidative generation singlet oxygen (1O2), opposed conventional reductive course yielding radical species (•OH SO4•–). Additionally, featuring inherent self-standing merit overcomes challenges associated limited light energy utilization cumbersome retrieval powder photosensitizers, thus broadening its large-scale application.

Язык: Английский

---

Construction of phase-separated Co/MnO synergistic catalysts and integration onto sponge for rapid removal of multiple contaminants

Materials Horizons, Год журнала: 2024, Номер 11(14), С. 3316 - 3329

Опубликована: Янв. 1, 2024

Novel metallic Co integration onto MnO nanorods enhances catalyst efficiency for wastewater treatment.

Язык: Английский

---

Extrinsic defects-rich biochar for efficient peroxydisulfate activation: Electronic structure modulation and disparate nonradical mechanisms

Separation and Purification Technology, Год журнала: 2024, Номер 336, С. 126338 - 126338

Опубликована: Янв. 7, 2024

Язык: Английский

---

Piezoelectric field-modulated peroxymonosulfate nonradical oxidation of bisphenol A via Bio-MOF-1: The dominant contribution of singlet oxygen

Chemical Engineering Journal, Год журнала: 2024, Номер 492, С. 152368 - 152368

Опубликована: Май 18, 2024

Язык: Английский

---

Electron shuttle of carboxyl boosted Fe(III)-anchored carboxylated cellulose activating sodium perborate for organic pollutant abatement

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 356, С. 124225 - 124225

Опубликована: Май 22, 2024

Язык: Английский

---

Polymer tethering strategy modified ZIF67 derived cobalt-confined nanocage for norfloxacin degradation: Tailored reactive sites and beneficial local microenvironment

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156749 - 156749

Опубликована: Окт. 1, 2024

Язык: Английский

---