Piezocatalytic Techniques in Environmental Remediation

Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(5)

Опубликована: Ноя. 1, 2022

Abstract As a consequence of rapid industrialization throughout the world, various environmental pollutants have begun to accumulate in water, air, and soil. This endangers ecological environment earth, remediation has become an immediate priority. Among techniques, piezocatalytic which uniquely take advantage piezoelectric effect, attracted much attention. Piezoelectric effects allow pollutant degradation directly, while also enhancing photocatalysis by reducing recombination photogenerated carriers. In this Review, we provide comprehensive summary recent developments techniques for remediation. The origin effect as well classification materials their application are systematically summarized. We analyze potential underlying mechanisms. Finally, urgent problems future development discussed.

Язык: Английский

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Novel Bi2WO6/ZnSnO3 heterojunction for the ultrasonic-vibration-driven piezocatalytic degradation of RhB

Environmental Pollution, Год журнала: 2022, Номер 319, С. 120982 - 120982

Опубликована: Дек. 30, 2022

Язык: Английский

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Piezoelectric materials and techniques for environmental pollution remediation

The Science of The Total Environment, Год журнала: 2023, Номер 869, С. 161767 - 161767

Опубликована: Янв. 23, 2023

Язык: Английский

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BiFeO₃ Nanoparticles: The “Holy‐Grail” of Piezo‐Photocatalysts?

Advanced Materials, Год журнала: 2023, Номер 35(31)

Опубликована: Май 2, 2023

Recently, piezoelectric-based catalysis has been demonstrated to be an efficient means and promising alternative sunlight-driven photocatalysis, where mechanical vibrations trigger redox reactions. Here, 60 nm-size BiFeO3 nanoparticles are shown very effective for piezo-degrading Rhodamine B (RhB) model dye with record degradation rate reaching 13 810 L mol-1 min-1 , even 41 750 (i.e., 100% RhB within 5 min) when piezocatalysis is synergistically combined sunlight photocatalysis. These piezocatalytic also versatile toward several dyes pharmaceutical pollutants, over 80% piezo-decomposition 120 min. The maintained high piezoelectric coefficient low dielectric constant, high-elastic modulus, the nanosized shape make these extremely piezocatalysts. To avoid subsequent secondary pollution enable their reusability, further embedded in a polymer P(VDF-TrFE) matrix. as-designed flexible, chemically stable, recyclable nanocomposites still keep remarkable piezo-photocatalytic performances 92% degradation, respectively, 20 min). This work opens new research avenue that multiferroic offers platform water cleaning, as well other applications such splitting, CO2 reduction, or surface purification.

Язык: Английский

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Design strategies and effect comparisons toward efficient piezocatalytic system

Nano Energy, Год журнала: 2022, Номер 107, С. 108093 - 108093

Опубликована: Дек. 15, 2022

Язык: Английский

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Modulating the Molecular Structure of Graphitic Carbon Nitride for Identifying the Impact of the Piezoelectric Effect on Photocatalytic H₂O₂ Production

ACS Catalysis, Год журнала: 2023, Номер 13(14), С. 9515 - 9523

Опубликована: Июль 5, 2023

The use of the piezoelectric effect for regulating separation and transportation charge carriers in artificial photosynthesis H2O2 has been established as a promising approach. However, an in-depth comprehensive understanding on photocatalysis is still far from satisfactory. Herein, we have accurately modulated molecular structure graphitic carbon nitride (CN) to investigate piezoelectricity photocatalytic production over CN. Our results show that role CN strongly depends Specifically, CN, modified by phosphorus (CN-P), oxygen-functionalized (CN-OF), cyano-group-grafted (CN-CA), activity CN-P, CN-OF enhanced approximately 1.40, 1.46, 1.51 times due effect, respectively, while CN-CA decreased 6.0 times. To clarify understand key factors affecting piezo-photocatalysis activity, employed density functional theory, photo-electrochemical measurements, piezoresponse force microscopy measurements explore active sites, polarization, molecular-functionalized reveal impact influence multiple factors. This work not only demonstrates determines whether improves but also unveils mechanism

Язык: Английский

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Fundamentals, advances and perspectives of piezocatalysis: A marriage of solid-state physics and catalytic chemistry

Progress in Materials Science, Год журнала: 2023, Номер 138, С. 101161 - 101161

Опубликована: Июль 16, 2023

Piezocatalysis, an evolving catalytic technology built on the piezoelectric properties of catalysts, breaks down barrier between mechanical energy and chemical energy. The potential difference that arises from deformation a material is commonly termed 'piezopotential'. Piezopotential has been demonstrated to facilitate manipulation band structure and/or charge carrier separation. Despite significant efforts design materials understand mechanism piezoelectrically enhanced chemistry through semiconductor physics, there remains opportunity review relationships performance piezo/ferroelectric properties. Herein, we provide comprehensive summary mechanisms correlated physical in field piezocatalysis. A fundamental understanding structural based solid-state physics can be used shed light future development In addition, types materials, strategies for catalysis efficiency enhancement, up-to-date applications environment remediation, renewable conversion, biomedicine biotechnology are discussed. Finally, perspectives designing developing highly active piezocatalysts using guidelines physicochemical proposed.

Язык: Английский

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Novel oxygen vacancy-rich Bi2MoO6-SOVs/MgFe2O4 S-scheme heterojunction piezo-photocatalytic for efficient degradation of norfloxacin and theoretical calculations

Chemical Engineering Journal, Год журнала: 2023, Номер 479, С. 147738 - 147738

Опубликована: Ноя. 29, 2023

Язык: Английский

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Polar Layered Bismuth‐Rich Oxyhalide Piezoelectrics Bi₄O₅X₂ (XBr, I): Efficient Piezocatalytic Pure Water Splitting and Interlayer Anion‐Dependent Activity

Advanced Functional Materials, Год журнала: 2023, Номер 33(29)

Опубликована: Март 31, 2023

Abstract Piezocatalytic pure water splitting for H 2 evolution carries the virtues of efficacious utilization mechanical energy, easy operation, and high value‐added products, while lacking desirable piezoelectrics chemical energy production. Here, two polar layered bismuth‐rich oxyhalides Bi 4 O 5 X (XBr, I) thin nanosheets (≈4 nm) are first exploited as efficient piezocatalysts to be capable dissociating water. The unique asymmetrical structures composed interleaved [Bi ] 2+ layer double − ions slabs along [1 0 1_] orientation cause large intrinsic dipole moment, excellent piezoelectricity deformation. Without any cocatalyst sacrificial agent, Br I display remarkable piezocatalytic production rate 1149.0 764.5 µmol g −1 h , respectively, standing among best piezocatalysts, accompanied by hydroxyl radicals (·OH) oxidative products. smaller radius higher electronegativity than a more strongly crystal structure in contributing activity compared . This study broadens scope piezoelectric materials applied sustainable catalysis efficiently converting illustrates importance configuration composition fabricating systems.

Язык: Английский

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The fundamentals and applications of piezoelectric materials for tumor therapy: recent advances and outlook

Materials Horizons, Год журнала: 2023, Номер 10(4), С. 1140 - 1184

Опубликована: Янв. 1, 2023

Malignant tumors are one of the main diseases leading to death, and vigorous development nanotechnology has opened up new frontiers for antitumor therapy. Currently, researchers focused on solving biomedical challenges associated with traditional anti-tumor medical methods, promoting research nano-drug carriers nano-drugs, which brings great hope improving curative effect reducing toxic side effects. Among systems being investigated, piezoelectric nano biomaterials, including ferroelectrics, pyroelectric materials, have recently received extensive attention applications. By coupling force, light, magnetism or heat electricity, polarized charges generated in these materials microscopically, forming a piezo-potential establishing built-in electric field. Polarized can directly act tumor micro-environment also assist separation inhibit recombination based theory optoelectronic theory. Based this, convert various forms primary energy (such as light energy, mechanical thermal magnetic energy) from surrounding environment into secondary electrical chemical energy). Herein, we review basic principles ferroelectric nanomedicine. Then, summarize types reported date their wide applications treatment, imaging, device construction probe detection treatment fields. discuss relevant characteristics post-processing strategies biomaterials obtain maximum response. Finally, present key future prospects ferroelectric, nanomaterial-based nanoagents efficient harvesting conversion desirable therapeutic outcomes.

Язык: Английский

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