Enabling Internal Electric Fields to Enhance Energy and Environmental Catalysis

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(11)

Published: Jan. 29, 2023

Abstract Recent years have witnessed an upsurge of interest in exploiting advanced photo‐/electrocatalysts for efficient energy conversion and environmental remediation. Constructing internal electric fields has been highlighted as a rising star to help facilitate various catalytic processes, with the merits promoting charge transfer/separation, optimizing redox potential creating effective active/adsorption sites. Internal are usually formed by polarization uneven distributions between different constituent layers, which widely exist piezoelectrics, polar surface terminations, heterostructure materials. Herein, groundbreaking interdisciplinary overview latest advances construction improve photo(electro)catalytic electrocatalytic activity is provided. This critical review begins encyclopedic summary classification, advantages, synthesis strategies fields. Subsequently, identification methods thoroughly discussed based on characterization techniques, experiments, theoretical calculations, can provide profound guidance in‐depth study To elaborate theory–structure–activity relationships fields, corresponding reaction mechanisms, modification strategies, performance jointly discussed, along discussion their practical applications. Finally, insightful analysis challenges future prospects field‐based catalysts discussed.

Language: Английский

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Oxygen Vacancies in Piezoelectric ZnO Twin‐Mesocrystal to Improve Peroxymonosulfate Utilization Efficiency via Piezo‐Activation for Antibiotic Ornidazole Removal

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(13)

Published: Jan. 16, 2023

Abstract Piezoelectric mesocrystals as defective materials have been demonstrated to possess adsorptive and catalytic properties in redox reactions. However, there is still a lack of research on the quantitative relationship between defect concentration piezocatalytic performance piezoelectric mesocrystals. Herein, twin‐hierarchical structure ZnO are taken with different oxygen‐vacancies (OVs) concentrations quantitatively investigate effect content peroxymonosulfate (PMS) piezo‐activation water purification. The mesocrystal moderate OVs exhibits rapid antibiotic ornidazole (ORZ) pollutants degradation rate (0.034 min −1 ) achieves high PMS utilization efficiency (0.162) that exceeds most state‐of‐the‐art processes, while excessive suppressed performance. Through calculations electron property reactants affinity, established. realized increased delocalization, reduced charge transfer barrier, enhanced thus accelerating kinetics activation. This work provides theoretical guidance for application engineering realize

Language: Английский

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Unraveling the dual defect effects in C3N5 for piezo-photocatalytic degradation and H2O2 generation

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 332, P. 122752 - 122752

Published: April 14, 2023

Language: Английский

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Dual-defect enhanced piezocatalytic performance of C3N5 for multifunctional applications

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 323, P. 122196 - 122196

Published: Nov. 17, 2022

Language: Английский

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Design strategies and effect comparisons toward efficient piezocatalytic system

Nano Energy, Journal Year: 2022, Volume and Issue: 107, P. 108093 - 108093

Published: Dec. 15, 2022

Language: Английский

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Piezoelectric catalysis for efficient reduction of CO2 using lead-free ferroelectric particulates

Nano Energy, Journal Year: 2022, Volume and Issue: 95, P. 107032 - 107032

Published: Feb. 9, 2022

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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Unveiling the effect of crystal facets on piezo-photocatalytic activity of BiVO4

Nano Energy, Journal Year: 2022, Volume and Issue: 101, P. 107573 - 107573

Published: July 4, 2022

Language: Английский

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Band Position‐Independent Piezo‐Electrocatalysis for Ultrahigh CO₂ Conversion

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(21)

Published: March 6, 2023

Piezo-electrocatalysis as an emerging mechano-to-chemistry energy conversion technique opens multiple innovative opportunities and draws great interest over the past decade. However, two potential mechanisms in piezo-electrocatalysis, i.e., screening charge effect band theory, generally coexist most piezoelectrics, making essential mechanism remain controversial. Here, for first time, piezo-electrocatalytic CO2 reduction reaction (PECRR) is distinguished through a narrow-bandgap piezo-electrocatalyst strategy using MoS2 nanoflakes demo. With conduction of -0.12 eV, are unsatisfied -to-CO redox -0.53 yet they achieve ultrahigh CO yield ≈543.1 µmol g-1 h-1 PECRR. Potential position shifts under vibration still with verified by theoretical investigation piezo-photocatalytic experiment, further indicating that piezo-electrocatalysis independent position. Besides, exhibit unexpected intense "breathing" enable naked-eye-visible inhalation gas, independently achieving complete carbon cycle chain from capture to conversion. The processes PECRR revealed self-designed situ cell. This work brings new insights into surface evolution piezo-electrocatalysis.

Language: Английский

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Efficient Cocatalyst-Free Piezo-Photocatalytic Hydrogen Evolution of Defective BaTiO_3–x Nanoparticles from Seawater

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(8), P. 3370 - 3389

Published: Jan. 13, 2023

Hydrogen is a promising fossil-fuel alternative fuel owing to its environmentally neutral emissions and high energy density. However, the need for purified water external power are critical hindrances implementation of hydrogen production. The present work demonstrates potential overcome these shortcomings through piezo-photocatalysis seawater using defective BaTiO3–x (BTO) nanoparticles. This material was made piezoelectrically active by straightforward annealing process under different atmospheres, including O2, N2, Ar, or H2, latter which caused Ti4+ → Ti(4–x)+ multiple reductions structural distortions that stabilize piezoelectric tetragonal domains. A suite experimental techniques employed reveal effects reduction on band structure. substantial effect presence self-polarization were confirmed piezoresponse force microscopy, while simulation clarified role vibrations bending deriving from self-polarization. evolution photocatalysis, piezocatalysis, over nanoparticles characterized with deionized (DI) water, simulated seawater, natural seawater. HER rate 132.4 μmol/g/h achieved DI without cocatalyst. In contrast, 48.7 obtained despite deleterious impact dissolved ions. offers new perspectives large-scale green H2 production abundant resources conventional readily available but still affected ions in

Language: Английский

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