High-performance piezoelectric flexible nanogenerators based on GO and polydopamine-modified ZnO/P(VDF–TrFE) for human motion energy capture, shared bicycle nanoenergy harvesting, and self-powered devices

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137666 - 137666

Published: April 1, 2025

Language: Английский

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Flexible Piezoelectric Sensors Based on Electrostatically Spun PAN/K-BTO Composite Films for Human Health and Motion Detection

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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Graphene-Based Organic Semiconductor Film for Highly Selective Photocatalytic CO2 Reduction

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 677 - 677

Published: April 29, 2025

Mimicking artificial photosynthesis utilizing solar energy for the production of high-value chemicals is a sustainable strategy to tackle fossil fuel-based crisis and mitigate greenhouse effect. In this study, we developed two-dimensional (2D) graphene oxide (GO)–diketopyrrolopyrrole (DPP) film photocatalyst. GO nanosheets facilitate uniform dispersion DPP nanoparticles (~5 nm) while simultaneously constructing an efficient charge transport network carrier recombination. Under visible-light irradiation in aqueous solution without sacrificial agents, optimized GO–DPP50 catalyst exhibited exceptional performance, achieving CO rate 32.62 μmol·g⁻1·h⁻1 with nearly 100% selectivity. This represents 2.77-fold 3.28-fold enhancements over pristine (8.65 μmol·g−1·h−1) bare (7.62 μmol·g−1·h−1), respectively. Mechanistic analysis reveals synergistic mechanism. The 2D framework not only serves as high-surface-area substrate anchoring, but also substantially suppresses recombination through rapid electron channels. Concurrently, uniformly distributed improve absorption efficiency effective photogenerated excitation. work establishes novel paradigm integration nanomaterials organic semiconductors, providing critical design principles developing high-performance film-based photocatalysts selectivity control CO2 reduction applications.

Language: Английский

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Unidirectional Polyvinylidene/Copper-Impregnated Nanohydroxyapatite Composite Membrane Prepared by Electrospinning with Piezoelectricity and Biocompatibility for Potential Ligament Repair

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 185 - 185

Published: Jan. 14, 2025

Ligament tears can strongly influence an individual’s daily life and ability to engage in physical activities. It is essential develop artificial scaffolds for ligament repairs order effectively restore damaged ligaments. In this experiment, the objective was evaluate fibrous membranes as repair. These were created through electrospinning using piezoelectric polyvinylidene fluoride (PVDF) composites, which contained 1 wt.% 3 of copper-impregnated nanohydroxyapatite (Cu-nHA). The proposed electrospun membrane would feature aligned fiber structure achieved high-speed roller stretching, mimics properties biomimetic Nanoparticles Cu-nHA had been composited into PVDF enhance pirzoelectric β-phase crystallines. study assessed physicochemical properties, antibacterial activity, biocompatibility vitro. A microstructure analysis revealed that composite exhibited a bionic with fibers resembling human performance experimental group containing significantly improved 25.02 ± 0.68 V/g·m−2 compared pure at 18.98 1.18 V/g·m−2. Further enhancement by 31.8% manipulating semicrystalline structures. Antibacterial cytotoxicity tests showed inherited nanoparticles without causing cytotoxic reactions. Tensile membrane’s flexibility strain adequate use particular, mechanical two groups enhanced those group. favorable flexible are highly beneficial tissue regeneration. This successfully developed PVDF/Cu-nHA biocompatible, unidirectional potential applications repair scaffolds.

Language: Английский

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Integrating PVDF-based piezoelectric nanogenerators with highly conductive carbon nanofibers for energy-harvesting applications

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110991 - 110991

Published: April 1, 2025

Language: Английский

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Emerging Piezoelectric Metamaterials for Biomedical Applications

Published: Nov. 21, 2024

Emerging piezoelectric metamaterials hold immense promise for biomedical applications by merging the intrinsic electrical properties of piezoelectricity with precise architecture metamaterials. This review provides a comprehensive overview various materials- such as molecular crystals, ceramics, and polymers-known their exceptional performance biocompatibility. We explore advanced engineering approaches, including design, supramolecular packing, 3D assembly, which enable customization targeted applications. Particular attention is given to pivotal role metamaterial structuring in development 0D spheres, 1D fibers tubes, 2D films, scaffolds. Key applications, tissue engineering, drug delivery, wound healing, biosensing, are discussed through illustrative examples. Finally, article addresses critical challenges future directions, aiming drive further innovations biomaterials next-generation healthcare technologies.

Language: Английский

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Ferroelectric Fluoropolymer/MXene composites for flexible pressure sensors: Fabrication and application

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101422 - 101422

Published: Dec. 1, 2024

Language: Английский

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