Interfacial fluorine migration-induced low leakage conduction in PVA based high-k composites with V2C MXene-SWCNT switchboard-like ceramic via ab initio MD simulations

Deng, Qihuang; Chen, Binghe; Bo, Maolin; Feng, Yefeng; Huang, Yuehao; Zhou, Junquan

doi:10.1039/d0tc05152g

Cited by 16 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[13] It was observed that for the V 2 C sample, a strong peak that appears at 2θ $ 7.5 corresponds to the 002 plane. [17,28] When V 2 AlC was exposed to the LiF/HCl mixture during synthesis, the 002 peak of V 2 AlC shifted to lower 2θ angles. The shift of the 002 peak from 13.5 to 7.5 corresponds to a dspacing increase from $6.58 to $11.8 Å.…”

Section: Resultsmentioning

confidence: 99%

Composite of two‐dimensional vanadium carbide MXene and cellulose nanocrystals for detection of analytes

Limaye

Pramanik

Moza

et al. 2023

J Raman Spectroscopy

View full text Add to dashboard Cite

A new family of two-dimensional (2D) materials called MXenes has gained attention recently owing to their fascinating physical and chemical properties.Herein, 2D vanadium carbide (V 2 C) MXene was mixed with cellulose nanocrystals (CNCs) to produce an environmentally friendly V 2 C/CNC composite.The V 2 C/CNC composite exhibited surface-enhanced Raman scattering (SERS) activity for the methylene blue (MB) dye with an enhancement factor of $9 Â 10 5 . Here, we have proposed that along with electromagnetic enhancement, the charge transfer process plays a vital role in the SERS enhancement. We believe that this work would open a new way to fabricate sustainable and renewable MXene and CNC composite solution-based SERS platforms for analyte detection.

show abstract

Section: Resultsmentioning

confidence: 99%

Composite of two‐dimensional vanadium carbide MXene and cellulose nanocrystals for detection of analytes

Limaye

Pramanik

Moza

et al. 2023

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…When using 2 wt% V 2 C, it has been demonstrated that PVDF/La 2 TiO 5 /V 2 C nanocomposites have a high dielectric constant of around 47 and a low dielectric loss of about 0.17 at 1 kHz [29]. Similarly, it was reported that V 2 C MXene-SWCNT nanocomposites, when made with 5 wt % hybrid ceramic, have a high dielectric constant of around 232 and a low dielectric loss of about 0.2 at 0.1 kHz [30]. When employing 4 wt% V 2 C, it has been proven that polymer/V 2 C/ionic liquid nanocomposites have a high dielectric constant of around 54 and a low dielectric loss of about 0.15 at 1 kHz [31].…”

Section: Introductionmentioning

confidence: 85%

Quantum Mechanical Study of the Dielectric Response of V2C-ZnO/PPy Ternary Nanocomposite for Energy Storage Application

Ezika

Sadiku

Adekoya

et al. 2023

J Inorg Organomet Polym

View full text Add to dashboard Cite

With the proliferation of electronic gadgets and the internet of things comes a great need for lightweight, affordable, sustainable, and long-lasting power devices to combat the depletion of fossil fuel energy and the pollution produced by chemical energy storage. The use of high-energy-density polymer/ceramic composites is generating more curiosity for future technologies, and they require a high dielectric constant and breakdown strength. Electric percolation and Interface polarization are responsible for the high dielectric constant. To create composite dielectrics, high-conductivity ceramic particles are combined with polymers to improve the dielectric constant. In this work, ternary nanocomposites with better dielectric characteristics are created using a nanohybrid filler of V2C Mxene-ZnO in a polypyrrole (PPy) matrix. Then, the bonding and the uneven charge distribution in the ceramic/ceramic contact area are investigated using quantum mechanical calculations. This non-uniform distribution of charges is intended to improve the ceramic/ceramic interface’s dipole polarization (dielectric response). The interfacial chemical bond formation can also improve the hybrid filler’s stability in terms of structure and, consequently, of the composite films. To comprehend the electron-transfer process, the density of state and electron localization function of the ceramic hybrid fillers are also studied. The polymer nanocomposite is suggested to provide a suitable dielectric response for energy storage applications.

show abstract

“…It is clear from Fig. 6, that the intensity peak and position of the functional group at around 3400, 3000, 1750, and 1100, 700 cm −1 wavenumber corresponds to the O-H bond stretching, 20 C-H bond stretching, 21 C-O bonding, 22 O-H plane bending and vibrational deformation of C-H bond respectively. Moreover, the position and intensity of the functional groups after mechanical depolymerization (ultrasonication) treatment become stronger by having lower transmission values.…”

Section: Mechanical Properties-tablementioning

confidence: 96%

Influence of Ultrasonication Treatment on Mechanical, Optical, and Physiochemical Properties of Polyvinyl-alcohol/cornstarch Biocomposite Thin Films

Jamali,

Shaikh,

Chandio

2024

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

In recent decades, Polyvinyl-alcohol (PVOH)/cornstarch (CS)-based composite thin films have garnered significant interest due to their improved qualities. Synthesizing these films relies heavily on depolymerization reactions within the solution of the PVOH/CS blend. Understanding how depolymerization affects the crystal structure and properties of these thin films is crucial. This study aims to evaluate the depolymerization of effect crosslinked PVOH incorporated with CS as filler materials (with an 80:20 mass ratio) using ultrasonication at various time intervals while maintaining a constant frequency of 25 KHz. The prepared solution is then cast into thin films using blade coating. Comparative analyses were then conducted between samples subjected to ultrasonication (treated) and without ultrasonication (untreated) to assess their properties based on structural physical, mechanical, optical, and biodegradability aspects. The investigation revealed significant changes in crystal structure and lattice strains following ultrasonication of the PVOH/CS solution compared to untreated PVOH/CS. Importantly, longer ultrasonication times correlated with increased tensile strength. Additionally, the treated samples led to improvements in thin film transparency and a notable decrease in absorbance. These observable changes were attributed to the mechanical depolymerization induced by ultrasonication, aligning the thin films with the necessary properties for food packaging applications.

show abstract

Interfacial fluorine migration-induced low leakage conduction in PVA based high-k composites with V₂C MXene-SWCNT switchboard-like ceramic via ab initio MD simulations

Abstract: Using V2C-CNT switchboard-like hybrid particles as filler for preparing promising composite dielectrics based on fluorine-migration effect.

Cited by 16 publications

References 52 publications

Composite of two‐dimensional vanadium carbide MXene and cellulose nanocrystals for detection of analytes

Composite of two‐dimensional vanadium carbide MXene and cellulose nanocrystals for detection of analytes

Quantum Mechanical Study of the Dielectric Response of V2C-ZnO/PPy Ternary Nanocomposite for Energy Storage Application

Influence of Ultrasonication Treatment on Mechanical, Optical, and Physiochemical Properties of Polyvinyl-alcohol/cornstarch Biocomposite Thin Films

Contact Info

Product

Resources

About