Bimetal doping enhanced polarization electric field in BiFeO3 for piezocatalytic U(Ⅵ) reduction and hydrogen production

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125113 - 125113

Published: Jan. 1, 2025

Language: Английский

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Structure-Tailored Superlattice Bi7Ti4NbO21: Coupling Octahedral Tilting and Rotation Induced High Ferroelectric Polarization for Efficient Piezo-photocatalytic CO2 Reduction

Advanced Powder Materials, Journal Year: 2025, Volume and Issue: unknown, P. 100265 - 100265

Published: Jan. 1, 2025

Language: Английский

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Photocatalytic NO_x removal and recovery: progress, challenges and future perspectives

Chemical Science, Journal Year: 2024, Volume and Issue: 15(24), P. 9026 - 9046

Published: Jan. 1, 2024

The excessive production of nitrogen oxides (NO x ) from energy production, agricultural activities, transportation, and other human activities remains a pressing issue in atmospheric environment management.

Language: Английский

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Exceptionally Low-Coordinated Bismuth–Oxygen Vacancy Defect Clusters for Generating Black In₂O₃ Photocatalysts with Superb CO₂ Reduction Performance

ACS Catalysis, Journal Year: 2025, Volume and Issue: 15(3), P. 1431 - 1443

Published: Jan. 9, 2025

Indium oxide (In2O3) is a widely used catalyst for CO2 reduction, yet its inherent properties, such as wide band gap and low-active surface, necessitate modification to achieve broad-wavelength absorption enhanced surface activity. However, simultaneously achieving these goals through single material modulation approach remains challenging. Here, we present simple innovative strategy develop black catalyst, BixIn2–xO3–y, comprising notably low-coordinated bismuth on oxygen-defect-laden In2O3. This induces local structural charge carrier changes, resulting in remarkably high visible light preeminent In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) confirms the spontaneous dissociation of species into CO even dark BixIn 2–xO3–y underscoring catalyst's Compared pristine In2O3, BixIn2–xO3–y exhibits approximately 24 times greater production. Characterization techniques, including extended X-ray fine structure (EXAFS) near-edge (XANES) analyses, along with density functional theory (DFT) calculations, reveal that oxygen vacancies reduced sample decrease both average coordination number effective oxidation state. Our findings indicate unusually dopant preferably promotes formation close (Bi-Vö) rather than near indium, which changes. These Bi-Vö clusters enhance harvesting, separation, adsorption/activation/reduction. Importantly, our demonstrates promise range applications, addressing key challenges reduction offering opportunities further advancement this field.

Language: Английский

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Synergistic Oxidation and Reduction of Complex Pollutants in Wastewater using a Self-cycling Piezo-photocatalytic Fenton System

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 490, P. 137774 - 137774

Published: March 1, 2025

Language: Английский

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Flower-like BiOCl/BiOBr Microsphere Coated with Bi2WO6 Nanoflakes as Z-scheme Photocatalyst for Dye Degradation

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179914 - 179914

Published: March 1, 2025

Language: Английский

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Synergistic enhancement of singlet oxygen generation in Au and oxygen vacancy co-modified Bi2MoO6 ultrathin nanosheets for efficient ciprofloxacin degradation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129321 - 129321

Published: Aug. 28, 2024

Language: Английский

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Transition Metal Phosphides (Fe₂P, Co₂P, and Ni₂P) Modified CdS Nanorods for Efficient Photocatalytic H₂ Evolution

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 13, 2024

Language: Английский

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2D Black Ferroelectric Perovskite Nanocatalysts Enable Defect Modulation‐Augmented Piezocatalytic Glioma Therapy

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Enhancing the efficacy of glioma treatment poses a significant challenge. Ferroelectric nanomaterials, renowned for their remarkable piezoelectric properties, generate reactive oxygen species (ROS) when exposed to external stimuli or specific environmental conditions. This characteristic positions them as promising platforms highly effective cancer therapies. In this study, two‐dimensional (2D) black Bi 4 Ti 3 O 12 ferroelectric perovskite nanocatalysts with engineered vacancies are designed potent sources ROS efficient therapy. The band bending due polarization and narrowed bandgap induced by vacancy defects effectively enhance carrier separation, suppress recombination rates, markedly increase production. Moreover, mitochondrial dysfunction activation mitogen‐activated protein kinase (MAPK) pathways contribute favorable anti‐tumor effects. vitro cellular‐level assessments in vivo antineoplastic evaluations unequivocally demonstrate enhanced cytotoxicity tumor suppression enabled piezo‐catalytic strategy. research underscores role defect engineering optimizing effectiveness semiconductors catalytically inducing apoptosis cells.

Language: Английский

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Visual Location of Oxygen Vacancies on Bismuth Titanate Nanosheets with Periodic Quantum Well and Promoting H₂O₂ Photosynthesis

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Oxygen vacancy (OV) defect engineering plays a crucial role in enhancing photocatalytic efficiency. However, the direct visual characterization of oxygen vacancies still remains technically limited. Herein, bismuth titanate (Bi 4 Ti 3 O 12 , BTO‐OV) model photocatalyst containing is constructed through density functional theory (DFT) calculations to reveal influence mechanism distinctive periodic quantum well and on charge transfer behavior BTO. Notably, distribution directly observed using low‐dose integrated differential phase contrast‐scanning transmission electron microscopy (iDPC‐STEM), providing evidence for location these BTO‐OV. Furthermore, theoretical calculation results are verified by characterizing photoelectric properties conducting performance tests hydrogen peroxide (H 2 ) photosynthesis. Specifically, BTO‐OV accelerate separation, leading H photosynthesis efficiency reaching 5278 µ m g −1 h which 5 times that original This work offers experimental references improvement mechanism.

Language: Английский

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