Recent advancements in the use of novel piezoelectric materials for piezocatalytic and piezo-photocatalytic applications

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 341, P. 123335 - 123335

Published: Sept. 28, 2023

Language: Английский

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Self-carbon-thermal-reduction strategy for boosting the Fenton-like activity of single Fe-N4 sites by carbon-defect engineering

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Nov. 20, 2023

Carbon-defect engineering in metal single-atom catalysts by simple and robust strategy, boosting their catalytic activity, revealing the carbon defect-catalytic activity relationship are meaningful but challenging. Herein, we report a facile self-carbon-thermal-reduction strategy for carbon-defect of single Fe-N4 sites ZnO-Carbon nano-reactor, as efficient catalyst Fenton-like reaction degradation phenol. The vacancies easily constructed adjacent to during synthesis, facilitating formation C-O bonding lowering energy barrier rate-determining-step Consequently, Fe-NCv-900 with exhibits much improved than Fe-NC-900 without abundant vacancies, 13.5 times improvement first-order rate constant phenol degradation. shows high (97% removal ratio only 5 min), good recyclability wide-ranging pH universality (pH range 3-9). This work not provides rational improving catalysts, also deepens fundamental understanding on how periphery environment affects property performance metal-N4 sites.

Language: Английский

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Multifunctional roles of MoS2 in persulfate-based advanced oxidation processes for eliminating aqueous organic pollutants: A review

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123173 - 123173

Published: Aug. 14, 2023

Language: Английский

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Multi-channel electron transfer induced by polyvanadate in metal-organic framework for boosted peroxymonosulfate activation

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 22, 2024

Catalytic peroxymonosulfate (PMS) activation processes don't solely rely on electron transfer from dominant metal centers due to the complicated composition and interface environment of catalysts. Herein synthesis a cobalt based metal-organic framework containing polyvanadate [V4O12]4− cluster, Co2(V4O12)(bpy)2 (bpy = 4,4'-bipyridine), is presented. The catalyst demonstrates superior degradation activity toward various micropollutants, with higher highest occupied molecular orbital (HOMO), via nonradical attack. X-ray absorption spectroscopy density functional theory (DFT) calculations demonstrate that Co sites act as both PMS trapper donor. In situ spectral characterizations DFT reveal terminal oxygen atoms in sponge could interact hydrogen form bonds, promoting generation SO5* intermediate dynamic pull direct process. Further, exhibits long-term water purification ability, up 40 h, towards actual wastewater discharged an ofloxacin production factory. This work not only presents efficient for environmental remediation pathway, but also provides fundamental insights into Fenton-like reaction mechanism. Peroxymonosulfate might centers. Here, authors found formation bond between [V4O12] 4− provided extra channel achieving activation.

Language: Английский

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Effective green treatment of sewage sludge from Fenton reactions: Utilizing MoS ₂ for sustainable resource recovery

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(9)

Published: Feb. 20, 2024

Effectively managing sewage sludge from Fenton reactions in an eco-friendly way is vital for technology’s viability pollution treatment. This study focuses on across various treatment stages, including generation, concentration, dehydration, and landfill, employs chemical composite MoS 2 to facilitate green resource utilization of all types sludge. , with exposed Mo 4+ low-coordination sulfur, enhances iron cycling creates acidic microenvironment the surface. The -modified exhibits outstanding (>95%) phenol pollutant degradation hydrogen peroxide peroxymonosulfate-based systems, unlike unmodified modified maintains excellent activity water conditions multiple anions, allowing extended over 14 d. Notably, generated oxygen demand (COD) modification process can be efficiently eliminated through reaction, ensuring effluent COD compliance enabling utilization.

Language: Английский

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Atomic-level coordination structures meet graphitic carbon nitride (g-C3N4) for photocatalysis: Energy conversion and environmental remediation

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 123683 - 123683

Published: Jan. 1, 2024

Language: Английский

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Recent advances in metal titanate-based piezocatalysts: Enhancing catalytic performance through improved piezoelectric properties and regulated carrier transport

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2024, Volume and Issue: 61, P. 111 - 134

Published: June 1, 2024

Language: Английский

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Dynamic defects boost in-situ H ₂ O ₂ piezocatalysis for water cleanup

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(9)

Published: Feb. 20, 2024

Creating efficient catalysts for simultaneous H 2 O generation and pollutant degradation is vital. Piezocatalytic synthesis offers a promising alternative to traditional methods but faces challenges like sacrificial reagents, harsh conditions, low activity. In this study, we introduce cobalt-loaded ZnO (CZO) piezocatalyst that efficiently generates from under ultrasonic (US) treatment in ambient aqueous conditions. The catalyst demonstrates exceptional performance with ~50.9% TOC removal of phenol situ 1.3 mM , significantly outperforming pure ZnO. Notably, the CZO maintains its capability even after multiple cycles, showing continuous improvement (from 1.8 mM). This attributed piezoelectric electrons promoting dynamic defects US which turn promotes adsorption activation oxygen, thereby facilitating production, as confirmed by EPR spectrometry, XPS analysis, DFT calculations. Moreover, piezocatalysts maintain outstanding production long periods inactivity, deactivated due metal ion dissolution could be rejuvenated pH adjustment, offering sustainable solution wastewater purification.

Language: Английский

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Pilot-scale and large-scale Fenton-like applications with nano-metal catalysts: from catalytic modules to scale-up applications

Water Research, Journal Year: 2024, Volume and Issue: 266, P. 122425 - 122425

Published: Sept. 10, 2024

Language: Английский

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Retrievable Hierarchically Porous Ferroelectric Ceramics for “Greening” the Piezo‐Catalysis Process

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 20, 2024

Abstract Powder‐based piezo‐catalysis, as an effective approach to degrade wastewater and produce hydrogen from water splitting, has been widely used in the field of energy conservation pollution reduction. However, these hard‐to‐recycle powders pose a challenge secondary environment. As result, this paper provides alternative strategy based on manufacture porous ceramics green chemistry replace ferroelectric currently traditional piezo‐catalysis. The piezo‐catalytic properties Ba 0.75 Sr 0.25 TiO 3 (BST) prepared using freeze casting direct ink writing techniques are investigated detail. positive effect introducing micro‐ macro‐pores is explored discovered, where BST ceramic with hierarchical pore channels by combination exhibts highest first‐order kinetic rate constant per mass catalysts, k , up 2.91 min −1 kg compared bulk ceramics. This study therefore first report for benefits average H 2 production reaching 848.88 nmol g h .

Language: Английский

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