Structural and Surface Properties of ZnTiO4/PVA Nanocomposites: Phase Stability of TiO2 | ||
| Egyptian Journal of Chemistry | ||
| Articles in Press, Accepted Manuscript, Available Online from 03 August 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2025.391170.11860 | ||
| Authors | ||
| Mohamed Mounir Saadeldin* 1; sabreen Gabr Salim2; Karam Atef Abdelghany3 | ||
| 1Physics Department, Faculty of Science, Cairo University, Giza 12613, Egypt. | ||
| 2Physics,Cairo university | ||
| 3Lecture at Faculty of Science - Cairo University | ||
| Abstract | ||
| In this study, Zn2TiO4 nanocomposites embedded in a polyvinyl alcohol (PVA) matrix were synthesized via a precipitation-assisted sonochemical route, followed by film casting to ensure uniform dispersion within the polymer matrix. X-ray diffraction (XRD) analysis revealed a phase transition in TiO₂ from anatase to rutile, with slight shifts in ZnO position, suggesting asymmetric structural interactions. These findings indicate that ZnO possibly influenced by carbon and residual nitrogen species from polymer and the precursor actively modulates the crystallinity and contributes to phase stabilization of TiO₂. X-ray photoelectron spectroscopy (XPS) evidenced the formation of C–O–Zn linkages and partial Zn²⁺ incorporation into the TiO₂ lattice via O bridges. FTIR spectra revealed changes in molecular interactions and bonding dynamics, while atomic force microscopy (AFM) showed increasing surface roughness with higher Zn2TiO4 content. Collectively, these structural and surface analyses confirm that ZnO ,N and C function as active architectural and electronic modifiers, enhancing phase stability and enabling the design of energy-efficient functional nanocomposite materials. | ||
| Keywords | ||
| TiO₂ nanocomposites; ZnO doping; nitrogen residuals; rutile stabilization; PVA matrix; XPS; AFM | ||
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