Synthesis and Characterization of Multi-Walled Carbon Nanotubes Decorated ZnO Nanocomposite

doi:10.21608/ejchem.2016.1552

Cited by 16 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorption peak that is centered at 1660 cm −1 is indicative of the carbon skeleton vibrations exhibited by the carbon nanotubes. 40,41 The FTIR analysis also confirmed the presence of β-phase PVDF in the PVDF-MWCNT foam. The transition from the α-phase to the β-phase in the PVDF-MWCNT foam is thought to occur due to the improved compatibility between carboxylic acid groups and CF 2 groups.…”

Section: X-ray Diffraction Analysis Of Pvdf-mwcnt Foammentioning

confidence: 64%

Microwave Absorption Performance of Flexible Porous PVDF-MWCNT Foam in the X-Band Frequency Range

Khade,

Wuppulluri

2024

ACS Omega

View full text Add to dashboard Cite

Lightweight electromagnetic absorbers made of polymers and multiwall carbon nanotubes (MWCNTs) have attracted a lot of attention because of their potential to shield next-generation electronics devices from electromagnetic radiation without reflecting it back into space. In this research, a flexible foam composed of MWCNTs and polyvinylidene fluoride (PVDF) is developed. This foam is designed to be an electromagnetic shielding material that is both flexible and absorption-dominant, reducing electromagnetic interference. The solvent approach is used to fabricate the PVDF-MWCNT foam. It is discovered that the foam has a porosity of 88.9%. Each cell in the PVDF-MWCNT foam is formed in a porous layered manner. The foam demonstrates a dielectric constant (ϵ′) of around 7.19 and dielectric loss (ϵ " ) of 4.46 at 9.96 GHz as calculated from MATLAB using the Nicolson− Ross−Wire algorithm. This developed EM absorber exhibits a high shielding efficiency of 78.46 dB. With an ideal reflection loss of −26.5 dB, this absorber attains the desired outcomes. The electromagnetic shielding performance is supported by calculations of the impedance matching degree, which was found to be 0.54. The PVDF-MWCNT foam displayed absorption-dominant characteristics, with a significantly low shielding due to reflection. This newly developed foam EM absorber has proven itself capable in a variety of commercial and stealth-related applications.

show abstract

Section: X-ray Diffraction Analysis Of Pvdf-mwcnt Foammentioning

confidence: 64%

Microwave Absorption Performance of Flexible Porous PVDF-MWCNT Foam in the X-Band Frequency Range

Khade,

Wuppulluri

2024

ACS Omega

View full text Add to dashboard Cite

show abstract

“…The absorption peak centered at 1570 cm −1 correspond to the vibration of the carbon skeleton of the carbon nanotubes. 39,40 The FT-IR results also indicated the formation of β-phase PVDF in PVDF-CNT foam. It was believed that the phase transition in PVDF-CNT foam from αto β-phase is attributed to the enhancement of compatibility of carboxylic acid groups with CF 2 groups, and CNT induced strong interaction that induced the crystallization of β-phase PVDF.…”

Section: Methodsmentioning

confidence: 96%

Humidity Sustainable Hydrophobic Poly(vinylidene fluoride)-Carbon Nanotubes Foam Based Piezoelectric Nanogenerator

Badatya

Bharti

Sathish

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Light weight lead free, polymer, and carbon nanotubes based flexible piezoelectric nanogenerators have prompted widespread concern for harvesting mechanical energy and powering next generation electronics devices. Herein, lightweight polyvinylidene fluoride (PVDF)-carbon nanotube (CNT) foam was prepared to fabricate humid resistant hydrophobic flexible piezoelectric nanogenerator to converts mechanical energy into electricity for the first time. Hydrophobic piezoelectric PVDF-CNT foam with density of 0.15 g/cm3 was prepared by solution route. PVDF-CNT foam exhibited crystalline and a well-defined chain likes structure with 65% fraction of β-phase. Self-poled PVDF-CNT foam shows piezoelectric charge coefficient (d33) of 9.4 pC/N. High d33 of PVDF-CNT foam is caused by dipole alignment induced by local electric field of CNT in the microcellular structure of PVDF. The developed foam exhibits ultrahigh dielectric constant (ε′) ∼ 3048 at 150 Hz. Flexible piezoelectric PVDF-CNT foam based nanogenerator was fabricated, which generates high output voltage ∼12 V and current density of 30 nA/cm2 at small compressive pressure of 0.02 kgf. Piezoelectric output performance was measured under different humid condition and an output voltage up to 8 V was achieved even under 60% RH condition. PVDF-CNT foam exhibited hydrophobic behavior and high surface water contact angle of 139°. Such high output voltage even under small pressure, without applying electrical poling and under humid condition was originated though CNT induced self-alignment of electric dipoles in PVDF polymer. These excellent performances of developed foam based device confirmed its potential application in organic based ultrasensitive self-powered nanosensors and nanosystems.

show abstract

An experimental analysis of CTAB surfactant on thermo-physical properties and stability of MWCNT/water nanofluids

Arora

Gupta

2022

Appl Nanosci

View full text Add to dashboard Cite

Synthesis and Characterization of Multi-Walled Carbon Nanotubes Decorated ZnO Nanocomposite

Cited by 16 publications

References 11 publications

Microwave Absorption Performance of Flexible Porous PVDF-MWCNT Foam in the X-Band Frequency Range

Microwave Absorption Performance of Flexible Porous PVDF-MWCNT Foam in the X-Band Frequency Range

Humidity Sustainable Hydrophobic Poly(vinylidene fluoride)-Carbon Nanotubes Foam Based Piezoelectric Nanogenerator

An experimental analysis of CTAB surfactant on thermo-physical properties and stability of MWCNT/water nanofluids

Contact Info

Product

Resources

About