Piezoelectric polarization field tuning Schottky barrier of Ni/Mn0.2Cd0.8S composite for hot electrons transfer to enhance photocatalytic hydrogen evolution

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 348, P. 123809 - 123809

Published: April 24, 2024

Language: Английский

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Construction of MXene/Bi₂WO₆ Schottky Junction for Highly Efficient Piezocatalytic Hydrogen Evolution and Unraveling Mechanism

Nano Letters, Journal Year: 2024, Volume and Issue: 24(11), P. 3361 - 3368

Published: March 6, 2024

For the first time, a series of MXene (Ti3C2Tx)/Bi2WO6 Schottky junction piezocatalysts were constructed, and piezocatalytic hydrogen evolution activity was explored. Optimal Ti3C2Tx/Bi2WO6 exhibits highest rate 764.4 μmol g–1 h–1, which is nearly 8 times higher than that pure Ti3C2Tx twice as high Bi2WO6. This value also surpasses most recently reported typical piezocatalysts. Moreover, related experimental results density functional theory calculations reveal can provide unique channels for efficient electron transfer, enhance piezoelectric properties, optimize adsorption Gibbs free energy water, reduce activation atoms, endow robust separation capacity charge carrier, restrict electron–hole recombination rate, thus significantly promoting efficiency reaction. Ultimately, we have unraveled an innovative mechanism. work broadens scope materials in sustainable piezocatalysis application.

Language: Английский

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Piezocatalysts and Piezo‐Photocatalysts: From Material Design to Diverse Applications

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: June 19, 2024

Abstract Piezocatalysis and piezo‐photocatalysis technology is a continuously developing catalytic based on the piezoelectric effect of catalysts, which breaks barrier between mechanical chemical energy. The polarization field formed by deformation materials proven to effectively manipulate band structures, improve separation electron‐hole pairs enhance activity, thus alleviating energy crises environmental issues. Herein, this review first introduces piezocatalysis piezo‐photocatalysis, comprehensively summarizes synthesis methods piezo(photo)catalysis materials, analyzes discusses measures optimize performance piezo(photo)catalysts. following systematically characteristics development current main piezo(photo)catalytic systems, application principles calculations in combination with practical researches. Subsequently, progress remediation, conversion, biomedical therapy fields presented. In end, challenges, direction, future prospects are prospected.

Language: Английский

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Insights into energy and environmental sustainability through photoactive graphene-based advanced materials: perspectives and promises

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Unlocking sustainability with photoactive graphene-based advanced materials for clean energy and environment our present posterity. Green solutions aiming at scalability, stability, cost effectiveness are provided herein.

Language: Английский

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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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Sulfur Vacancy‐Induced Enhancement of Piezocatalytic H₂ Production in MoS₂

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 3, 2025

Abstract This study explores the role of S vacancies in MoS 2 enhancing its piezocatalytic efficiency. Sulfur crystal lattice introduce localized changes electronic structure and charge distribution, improving material's piezoelectric response. Characterization catalysts involved techniques like field‐emission scanning electron microscopy (FESEM), X‐ray diffraction (XRD), transmission (TEM), photoelectron spectroscopy (XPS). Electrochemical measurements, including impedance (EIS) Mott–Schottky (M‐S) analysis, are performed to assess performance. The also employed density functional theory (DFT) calculations investigate hydrogen adsorption properties with vacancies. results demonstrated that S‐deficient significantly enhanced H evolution. production rates different vacancy concentrations measured under ultrasonic vibration. sample an optimal concentration (MS‐1) exhibited highest rate 1423.29 µmol g −1 h , compared 439.06 for pristine (MS‐0). improved performance is attributed increased polarization efficient separation facilitated by

Language: Английский

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Constructing of GQDs/ZnO S-scheme heterojunction as efficient piezocatalyst for environmental remediation and understanding the charge transfer mechanism

Carbon, Journal Year: 2023, Volume and Issue: 218, P. 118772 - 118772

Published: Dec. 27, 2023

Language: Английский

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Regulation of phase composition and oxygen vacancy in hydrothermally synthesized NaNbO3 nanowire and its enhanced piezocatalytic activity for antibiotic elimination

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149885 - 149885

Published: Feb. 21, 2024

Language: Английский

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Kesterite‐Type Narrow Bandgap Piezoelectric Catalysts for Highly Efficient Piezocatalytic Fenton System

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 28, 2024

Abstract Piezocatalytic Fenton (PF) system emerges as a promising approach to wastewater treatment by leveraging piezocatalysis enhance Fenton‐like reactions. However, conventional piezocatalysts encounter challenges because they often compromise catalytic properties in biased favor of superior piezoelectricity, resulting sluggish kinetics. To tackle this trade‐off, here novel class kesterite‐type narrow bandgap piezoelectrics, Cu 2 XSnS 4 (CXTS, X = Zn, Ni, Co), is developed for PF reactions, which exhibit unique combination physicochemical attributes favorable catalysis such (1.2–1.5 eV), high free charge density (1 × 10 18 cm −3 ), mobility, and redox activity while retaining excellent piezoelectricity (62–142 pm V −1 ). With the well‐balanced piezoelectric, semiconducting, properties, CXTS‐based systems demonstrate outstanding performance tetracycline degradation, delivering notable reaction kinetics 0.34 min only with minor H O dosage (1.2 m outperforming most reactions requiring large amount factor up 10. Such remarkable fulfilled simultaneously effective activation situ generation reactive oxygen species from water via piezocatalysis. Additionally, distinctive hierarchical morphology consisting 2D nanosheets enables easy crystal domain deformation trigger piezoelectric effect, thereby drastically reducing mechanical energy input required drive Rigorous testing has validated viability practical feasibility system. The study offers new design strategy highly efficient systems, enabling cost‐effective sustainable approach.

Language: Английский

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Fabrication of heterostructured T-BaTiO3/Ag3PO4 for efficient piezophotocatalytic inactivation of M. aeruginosa under visible light with ultrasound

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 338, P. 126522 - 126522

Published: Jan. 27, 2024

Language: Английский

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