Generating dual-active species by triple-atom sites through peroxymonosulfate activation for treating micropollutants in complex water

Proceedings of the National Academy of Sciences, Год журнала: 2023, Номер 120(13)

Опубликована: Март 23, 2023

The peroxymonosulfate (PMS)-triggered radical and nonradical active species can synergistically guarantee selectively removing micropollutants in complex wastewater; however, realizing this on heterogeneous metal-based catalysts with single sites remains challenging due to insufficient electron cycle. Herein, we design asymmetric Co-O-Bi triple-atom Co-doped Bi2O2CO3 facilitate PMS oxidation reduction simultaneously by enhancing the transfer between sites. We propose that result an density increase Bi decrease Co sites, thereby undergoes a reaction generate SO4•- •OH at site 1O2 site. suggest synergistic effect of SO4•-, •OH, enables efficient removal mineralization without interference from organic inorganic compounds under environmental background. As result, achieves almost 99.3% sulfamethoxazole degradation 3 min k-value as high 82.95 min-1 M-1, which is superior existing reported so far. This work provides structural regulation approach control catalytic function, will guide rational Fenton-like catalysts.

Язык: Английский

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Recent advances in the applications of encapsulated transition-metal nanoparticles in advanced oxidation processes for degradation of organic pollutants: A critical review

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 342, С. 123401 - 123401

Опубликована: Окт. 18, 2023

Язык: Английский

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Enhanced and synergistic catalytic activation by photoexcitation driven S−scheme heterojunction hydrogel interface electric field

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Окт. 23, 2023

The regulation of heterogeneous material properties to enhance the peroxymonosulfate (PMS) activation degrade emerging organic pollutants remains a challenge. To solve this problem, we synthesize S-scheme heterojunction PBA/MoS2@chitosan hydrogel achieve photoexcitation synergistic PMS activation. constructed photoexcited carriers undergo redox conversion with through transfer pathway driven by directional interface electric field. Multiple pathways greatly reactive oxygen species generation, leading significant increase in doxycycline degradation rate. Meanwhile, 3D polymer chain spatial structure chitosan is conducive rapid capture and electron transport advanced oxidation process, reducing use transition metal activator limiting leaching ions. There reason believe that regulated will provide new perspective for future design research on enhancing heterologous catalysis process.

Язык: Английский

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Recent advances in design and engineering of MXene-based catalysts for photocatalysis and persulfate-based advanced oxidation processes: A state-of-the-art review

Chemical Engineering Journal, Год журнала: 2023, Номер 480, С. 147920 - 147920

Опубликована: Дек. 7, 2023

Язык: Английский

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Low-coordinated Co-N3 sites induce peroxymonosulfate activation for norfloxacin degradation via high-valent cobalt-oxo species and electron transfer

Journal of Hazardous Materials, Год журнала: 2023, Номер 455, С. 131622 - 131622

Опубликована: Май 11, 2023

Язык: Английский

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Applications of MXene‐Based Single‐Atom Catalysts

Small Structures, Год журнала: 2023, Номер 4(7)

Опубликована: Янв. 27, 2023

Single‐atom catalysts (SACs) consist of isolated metal sites on the support through stable coordination bond, which usually have high catalytic activity and selectivity. With large surface area electron tunability, metallic carbides, nitrides, or carbonic nitrides (MXenes) are suitable carriers for supporting single‐metal atoms. The abundant surface‐functional groups vacancy defects MXenes ideal anchoring Herein, advanced synthesis characterization methods MXene‐based SACs first introduced. Three strategies (adsorption at functional groups, vacancies, terminating group vacancies) appear to be feasible in ensuring non‐aggregation atoms, attributed strong bonding between atoms carrier. applications electrocatalysis (including hydrogen evolution reaction, oxygen reduction carbon dioxide nitrogen reaction), energy storage Li‐ion batteries, metal–air supercapacitors), sensors gas biological sensors) fundamentally reviewed. Finally, own insight current challenges prospects is presented.

Язык: Английский

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Unveiling the structure–activity relationships of ofloxacin degradation by Co3O4-activated peroxymonosulfate: From microstructures to exposed facets

Chemical Engineering Journal, Год журнала: 2023, Номер 467, С. 143396 - 143396

Опубликована: Май 10, 2023

Язык: Английский

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High-efficiency degradation of carbamazepine by the synergistic electro-activation and bimetals (FeCo@NC) catalytic-activation of peroxymonosulfate

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 338, С. 123064 - 123064

Опубликована: Июль 3, 2023

Язык: Английский

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Regulating the Local Electronic Structure of Copper Single Atoms with Unsaturated B,O-Coordination for Selective ¹O₂ Generation

ACS Catalysis, Год журнала: 2023, Номер 13(18), С. 12414 - 12424

Опубликована: Сен. 7, 2023

Generating singlet oxygen (1O2) on single atom catalysts (SACs) in peroxymonosulfate (PMS)-based Fenton-like reactions exhibits great potential for selective degradation of contaminants complex wastewater. Clarifying the structure–activity relationship between electronic structure SACs and 1O2 generation selectivity is crucial precise design efficient catalysts, but it challenging. Herein, Cu with different structures (namely, Cu–O2X, where X = N, S, B, P, O) investigated by density functional theory calculations using adsorption terminal atoms PMS as an activity descriptor. Significantly, affected center which electron-depleted Cu-O2B site a higher atoms. Experimentally, moiety superior catalytic activation, showing nearly 100% ciprofloxacin rate 0.2250 min–1, outperforming those other counterparts. The high attributed to asymmetric accelerating faster electron transfer O–O bond stretching, lowering energy barrier key intermediates toward generation. This work provides broader perspective regulating sites at atomic level catalysts.

Язык: Английский

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Acceleration of Fe3+/Fe2+ cycle in garland-like MIL-101(Fe)/MoS2 nanosheets to promote peroxymonosulfate activation for sulfamethoxazole degradation

Chemical Engineering Journal, Год журнала: 2023, Номер 470, С. 144190 - 144190

Опубликована: Июнь 24, 2023

Язык: Английский

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