The effect of iron oxide content on the structural and optical parameters of polyvinyl alcohol/graphene nanocomposite films

Abstract

The effect of iron oxide nanoparticles (Fe2O3 NPs) content on the structural and optical parameters of polyvinyl alcohol/graphene (PVA/G) blend has been investigated. Fe2O3 NPs were synthesized by the hydrothermal procedure. Nanocomposite (NC) films of PVA/G filled with different amounts of Fe2O3 NPs were equipped using the solution casting technique. The surface morphology, structural, and optical properties were examined by scanning electron microscope (SEM), X‐ray diffraction (XRD), and ultraviolet‐visible‐near‐IR (UV‐Vis‐NIR) spectrophotometry techniques, respectively. SEM micrographs reveal the homogenous distribution of Fe2O3 NPs in the PVA/G matrix. The XRD analysis exhibits the formulation of the hematite phase of Fe2O3 NPs and the semi‐crystalline nature of PVA/G NC films. The UV‐Vis‐NIR data analysis shows that the optical properties of the PVA/G blend could be tailored via Fe2O3 NPs filling. Wemple–DiDomenico model is utilized to explore the dispersion parameters of the prepared NCs. A significant effect of Fe2O3 NPs filling is realized on the oscillator and dispersion energies, infinite refractive index, dielectric constant, average oscillator strength and the lattice dielectric constant of the NC films. PVA/G filled Fe2O3 NPs are suggested for different optical and storage applications.

Impact of Mn–Ni spinal ferrite nanoparticles on the structural, morphological, surface roughness, and optical parameters of polyvinyl alcohol for optoelectronic applications

“…This is caused by defects being produced, new states being created in the forbidden region, and the distance between the valence and conduction bands being lessened. 44 Similar behavior of decreasing the bandgap was observed for PVA/graphene/Fe 2 O 3 45 and PVA/PVP/SnS 46 systems.…”

Effect of Ag/CuS nanoparticles loading to enhance linear/nonlinear spectroscopic and electrical characteristics of PVP/PVA blends for flexible optoelectronics

“…The refractive index (n), optical conductivity (σ opt. ), dielectric parameters (real ε r, and imaginary ε i ) and surface/volume energy loss functions (SELF/VELF) were calculated as 4,13,40,41 :…”

“…Similar E g performance was reported in the literature. 5,13,53 It is reported that 5% of Gd 2 O 3 loading in PEG/PVA led to E g decrease from 4.70 to 3.98 eV. 55 The reduction in E g of PVP/PVA blend due to ACS doping refers to energy levels and defects created in its bandgap.…”

“…[9][10][11][12] Polymeric nanocomposites (PNCs) are prepared by incorporating polymers or polymeric blends with nano fillers to match desired features. [13][14][15] Whereas, the physical and chemical properties of the prepared PBs could be controlled by adjusting the fillers' type and contents. 5,16 Polyvinyl pyrrolidone (PVP), chitosan, polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), and polyethylene glycol (PEG) are the most attractive polymers owing to their attractive characteristics such as nontoxicity, low cost, ecofriendly, availability and bio-compatibility.…”

“…Polymeric blends (PBs) could be attained by mixing two polymers or more with specific ratios to produce new polymeric materials with certain characteristics 9–12 . Polymeric nanocomposites (PNCs) are prepared by incorporating polymers or polymeric blends with nano fillers to match desired features 13–15 . Whereas, the physical and chemical properties of the prepared PBs could be controlled by adjusting the fillers' type and contents 5,16 .…”