首页|Solvent-free synthesis and characterization of nanocurcumin-reinforced zinc oxide bio-nanocomposites for enhanced optoelectronic applications
Solvent-free synthesis and characterization of nanocurcumin-reinforced zinc oxide bio-nanocomposites for enhanced optoelectronic applications
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NETL
NSTL
Springer Nature
The aim of this study was to synthesize nanocurcumin (NC) and incorporate it at varying concentration into zinc oxide (ZnO) matrices using a solvent-free mechanical mixing process. The research explored structural characteristics, crystalline properties, surface morphology, and temperature-dependent dielectric constant, conductivity, impedance, and electric modulus. The attachment of NC into the ZnO nanocomposite was confirmed by FTIR. The UV spectra confirmed the formation of ZnO/NC nanocomposites through a wavelength shift compared to pure ZnO and also demonstrated a decrease in optical bandgap energy, indicating enhanced charge transfer properties with the incorporation of NC. XRD results showed that the prepared nanocomposite was semicrystalline. FE-SEM and optical images revealed improved dispersion and distribution of NC particles within the ZnO matrix, with well-defined spherical nanoparticles observed at 6 wt% loading, while agglomeration occurred at higher loadings. As the concentration of NC rises from 2 wt% to 6 wt%, significant increase in AC conductivity (from 2.49 × 10~(-6) Son~(-1) to 37.9 × 10~(-6) Scm~(-1)) was observed at 100 Hz. With increasing temperature, thermal energy enhanced charge carrier movement, reducing the activation energy required for conduction. The semicircle in the impedance plot, along with the bulk resistance, further validated the optimal dielectric properties of the samples. The tunable structural, optical, and electrical properties of the nanocomposite make it promising for optoelectronic and energy storage systems.
NETL
NSTL
Springer Nature
