Structure, morphology and modelling studies of polyvinylalcohol nanocomposites reinforced with nickel oxide nanoparticles and graphene quantum dots
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
34363804
DOI
10.1016/j.envres.2021.111842
PII: S0013-9351(21)01136-1
Knihovny.cz E-zdroje
- Klíčová slova
- GQDs, NiO, PVA, Polymer nanocomposites, Structural model,
- MeSH
- grafit * MeSH
- kvantové tečky * MeSH
- nanočástice * MeSH
- nanokompozity * MeSH
- nikl MeSH
- polyvinylalkohol MeSH
- spektroskopie infračervená s Fourierovou transformací MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- grafit * MeSH
- nickel monoxide MeSH Prohlížeč
- nikl MeSH
- polyvinylalkohol MeSH
Nickel oxide (NiO) nanoparticles (NPs) and graphene quantum dots (GQDs) reinforced polyvinyl alcohol (PVA) nanocomposite films were prepared using a solution casting technique. The physicochemical characteristics of PVA/NiO/GQDs (PNG) nanocomposite films were studied using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and field emission scanning electron microscopy (FESEM). The obtained PNG nanocomposite films showed good mechanical flexibility and improved tensile strength. The influence of nanofiller concentrations on PNG nanocomposite film. The obtained results demonstrate an increase in the activation energy (Ea) up to PNG3 upon increasing the GQDs concentration and thereafter, its decreases. The fundamental interactions of the constituents of PNG nanocomposite film were investigated using density functional theory (DFT). This study on electronic structure reveals that the PVA model indirectly interacts with GQDs through the NiO model. This configuration is favoured in terms of interaction energy (-78 kJ/mol) compared to the one in which PVA interacts directly with the GQDs model.
Department of Physics The New College University of Madras Chennai 600014 Tamil Nadu India
New Technologies Research Center University of West Bohemia Univerzitní 8 30614 Plzeň Czech Republic
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