Electroactive Biomaterials Regulate the Electrophysiological Microenvironment to Promote Bone and Cartilage Tissue Regeneration

Advanced Functional Materials, Год журнала: 2024, Номер 34(23)

Опубликована: Янв. 7, 2024

Abstract The incidence of large bone and articular cartilage defects caused by traumatic injury is increasing worldwide; the tissue regeneration process for these injuries lengthy due to limited self‐healing ability. Endogenous bioelectrical phenomenon has been well recognized play an important role in homeostasis regeneration. Studies have reported that electrical stimulation (ES) can effectively regulate various biological processes holds promise as external intervention enhance synthesis extracellular matrix, thereby accelerating Hence, electroactive biomaterials considered a biomimetic approach ensure functional recovery integrating physiological signals, including electrical, biochemical, mechanical signals. This review will discuss endogenous bioelectricity tissue, effects ES on cellular behaviors. Then, recent advances materials their applications are systematically overviewed, with focus advantages disadvantages repair performances modulation cell fate. Finally, significance mimicking electrophysiological microenvironment target emphasized future development challenges strategies proposed.

Язык: Английский

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

Nano Letters, Год журнала: 2024, Номер 24(11), С. 3361 - 3368

Опубликована: Март 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.

Язык: Английский

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Mechanically driven water splitting over piezoelectric nanomaterials

Chem Catalysis, Год журнала: 2024, Номер 4(2), С. 100901 - 100901

Опубликована: Янв. 26, 2024

Язык: Английский

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Molybdenum sulphide incorporated flexible poly(vinylidene fluoride) nanocomposites for energy harvesting and water remediation by dye degradation via piezocatalysis

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Molybdenum sulphide (MoS 2 ) was incorporated into poly(vinylidene difluoride) (PVDF) matrix via melt‐mixing followed by solution casting, to prepare PVDF/MoS nanocomposite films with varying MoS concentration. Piezoelectric properties of nanocomposites were significantly boosted incorporation in PVDF aiding the formation polar phase nanocomposites. Formation electroactive phases analyzed through Fourier transform infrared and Raman spectroscopic analyses, which also highlighted interactions between dipoles. A remarkable content ~97% achieved PVDF/3 (containing 3 wt% ). Dielectric ferroelectric investigations further supported enhancement interfacial polarization films. response fabricated devices subsequently assessed, demonstrating an output voltage ~96 V generated human‐hand actuation on film. Additionally, device exhibited a substantial volumetric power density ~150 μW/cm current ~7.2 μA/cm . Notably, optimized film significant degradation efficiencies ~69.7% ~67.4% case Methylene Blue Rhodamine B dye, respectively. The successful fabrication piezocatalytic provided valuable insights piezoelectric for various dyes. Highlights Self‐polarized high (∼97%) has been casting. High d 33 value ~72 pm/V nanocomposite. based nanogenerator can generate under N sensitivity ~26 V/N. Power obtained. acted as effective piezocatalysts organic dye >69% efficiency.

Язык: Английский

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Interfacial engineering of Bi2MoO6-BaTiO3 Type-I heterojunction promotes cocatalyst-free piezocatalytic H2 production

Nano Energy, Год журнала: 2023, Номер 121, С. 109206 - 109206

Опубликована: Дек. 17, 2023

Single component semiconductor materials with piezoelectric response can promote the activation of hydrogen ions (H + ) and generation 2 under action mechanical force, but high recombination rate carriers is major obstacle to strengthen piezocatalytic efficiency. Here, a groundbreaking Bi MoO 6 -BaTiO 3 (BMO-BTO) Type-I heterojunction piezocatalyst successfully fabricated through solvothermal strategy, applied for cocatalysts-free H production reaction. Under ultrasonic vibration, BMO-0.1BTO reach up nearly 152.57 µmol/g/h, which approximately 9.33 4.47 times respect that pristine BMO (16.36 µmol/g/h) BTO (34.16 alone, respectively. Furthermore, also combined other commonly used piezocatalysts construct heterojunctions, analogous marvelous performance was attained. The enhanced be credited established built-in electric field (BIEF) in extraordinarily suppressed rates piezocarriers, rather than an increase piezoelectricity, emphatically verified series physics chemical characterizations. This study presents innovative paradigm fabricating BMO-based efficiently convert energy into energy. attributed remarkably reduced carriers, piezoelectricity. • Highly efficient BMO-BTO heterojunctions were rationally designed. owned excellent activity stability. An mechanism reasonably elucidated. new BIEF, material

Язык: Английский

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Low-frequency mechanical energy in the environment for energy production and piezocatalytic degradation of organic pollutants in water: A review

Journal of Water Process Engineering, Год журнала: 2023, Номер 56, С. 104312 - 104312

Опубликована: Сен. 19, 2023

Язык: 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, Год журнала: 2024, Номер 485, С. 149885 - 149885

Опубликована: Фев. 21, 2024

Язык: Английский

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Sulfur-Vacancy-Engineered Two-Dimensional Cu@SnS_2–x Nanosheets Constructed via Heterovalent Substitution for High-Efficiency Piezocatalytic Tumor Therapy

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(31), С. 21496 - 21508

Опубликована: Июль 29, 2024

Ultrasound (US)-mediated piezocatalytic tumor therapy has attracted much attention due to its notable tissue-penetration capabilities, noninvasiveness, and low oxygen dependency. Nevertheless, the efficiency of is limited an inadequate piezoelectric response, separation electron–hole (e––h+) pairs, complex microenvironment (TME). Herein, ultrathin two-dimensional (2D) sulfur-vacancy-engineered (Sv-engineered) Cu@SnS2–x nanosheet (NS) with enhanced effect was constructed via heterovalent substitution strategy Sn4+ by Cu2+. The introduction Cu2+ ion not only causes changes in crystal structure increase polarization but also generates rich Sv decrease band gap from 2.16 1.62 eV inhibit e––h+ pairs recombination, collectively leading highly efficient generation reactive species under US irradiation. Moreover, shows US-enhanced TME-responsive Fenton-like catalytic activity glutathione depletion ability, further aggravating oxidative stress. Both vitro vivo results prove that Sv-engineered NSs can significantly kill cells achieve high-efficiency a biocompatible manner. Overall, this study provides new avenue for sonocatalytic broadens application 2D materials.

Язык: Английский

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Ce-regulating defect and morphology engineering for efficient enhancing piezocatalytic performances of BiOBr

Chemical Communications, Год журнала: 2024, Номер 60(14), С. 1892 - 1895

Опубликована: Янв. 1, 2024

Ce-doped BiOBr piezocatalysts are rationally designed by defect and morphology engineering strategies, demonstrate excellent catalytic performances.

Язык: Английский

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Harvesting Vibration Energy to Produce Hydrogen Peroxide with Bi₃TiNbO₉ Nanosheets through a Water Oxidation Dominated Dual-Channel Pathway

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(9), С. 3595 - 3607

Опубликована: Фев. 16, 2024

Developing green, efficient, and sustainable techniques to synthesize hydrogen peroxide has always been the challenge faced by researchers. The rising-star piezocatalysis demonstrated be capable of drive redox reactions based on piezoelectric effect therefore may provide novel solutions for H2O2 production through mechanical energy conversion. Herein, bismuth layered compound Bi3TiNbO9 (BTNO) was utilized produce harvesting ultrasound vibration in a pure water system first time. A yield rate 407.05 μmol·g–1·h–1 achieved under ultrasonic conditions (40 kHz, 50 W) without any cocatalysts scavengers, surpassing majority reported piezocatalysts with similar mechanisms. Furthermore, satisfied circulation long-term running stability piezocatalyst BTNO were proved, accumulated concentration could reach 1127 μM after 5 h reaction. response piezoresponse force microscopy (PFM), electrochemical characterization, piezodeposition experiments. On basis band structure analysis, possible pathway generating proposed according radical-trapping atmosphere control experiment results. It found that both oxidation reaction (WOR) oxygen reduction (ORR) contributed H2O2, but direct WOR plays an absolute dominant role. In addition, Ar sparging verified able efficiently enhance generation due enlarged cavitation effect, superior its photocatalysis synthesizing H2O2. is hoped this work can deep insights into offer clues synthesis peroxide.

Язык: Английский

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